Vulnerabilities > CVE-2017-15268 - Missing Release of Resource after Effective Lifetime vulnerability in Qemu

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
qemu
CWE-772
nessus

Summary

Qemu through 2.10.0 allows remote attackers to cause a memory leak by triggering slow data-channel read operations, related to io/channel-websock.c.

Vulnerable Configurations

Part Description Count
Application
Qemu
252

Common Attack Pattern Enumeration and Classification (CAPEC)

  • HTTP DoS
    An attacker performs flooding at the HTTP level to bring down only a particular web application rather than anything listening on a TCP/IP connection. This denial of service attack requires substantially fewer packets to be sent which makes DoS harder to detect. This is an equivalent of SYN flood in HTTP. The idea is to keep the HTTP session alive indefinitely and then repeat that hundreds of times. This attack targets resource depletion weaknesses in web server software. The web server will wait to attacker's responses on the initiated HTTP sessions while the connection threads are being exhausted.

Nessus

  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3575-1.NASL
    descriptionIt was discovered that QEMU incorrectly handled guest ram. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-11334) David Buchanan discovered that QEMU incorrectly handled the VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. (CVE-2017-13672) Thomas Garnier discovered that QEMU incorrectly handled multiboot. An attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-14167) Tuomas Tynkkynen discovered that QEMU incorrectly handled VirtFS directory sharing. An attacker could use this issue to obtain sensitive information from host memory. (CVE-2017-15038) Eric Blake discovered that QEMU incorrectly handled memory in the NBD server. An attacker could use this issue to cause the NBD server to crash, resulting in a denial of service. This issue only affected Ubuntu 17.10. (CVE-2017-15118) Eric Blake discovered that QEMU incorrectly handled certain options to the NBD server. An attacker could use this issue to cause the NBD server to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-15119) Daniel Berrange discovered that QEMU incorrectly handled the VNC server. A remote attacker could possibly use this issue to consume memory, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. (CVE-2017-15124) Carl Brassey discovered that QEMU incorrectly handled certain websockets. A remote attacker could possibly use this issue to consume memory, resulting in a denial of service. This issue only affected Ubuntu 17.10. (CVE-2017-15268) Guoxiang Niu discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-15289) Cyrille Chatras discovered that QEMU incorrectly handled certain PS2 values during migration. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-16845) It was discovered that QEMU incorrectly handled the Virtio Vring implementation. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-17381) Eric Blake discovered that QEMU incorrectly handled certain rounding operations. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-18043) Jiang Xin and Lin ZheCheng discovered that QEMU incorrectly handled the VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-5683). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id106927
    published2018-02-21
    reporterUbuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/106927
    titleUbuntu 14.04 LTS / 16.04 LTS / 17.10 : qemu vulnerabilities (USN-3575-1)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Ubuntu Security Notice USN-3575-1. The text 
    # itself is copyright (C) Canonical, Inc. See 
    # <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
    # trademark of Canonical, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(106927);
      script_version("3.7");
      script_cvs_date("Date: 2019/09/18 12:31:48");
    
      script_cve_id("CVE-2017-11334", "CVE-2017-13672", "CVE-2017-14167", "CVE-2017-15038", "CVE-2017-15118", "CVE-2017-15119", "CVE-2017-15124", "CVE-2017-15268", "CVE-2017-15289", "CVE-2017-16845", "CVE-2017-17381", "CVE-2017-18043", "CVE-2018-5683");
      script_xref(name:"USN", value:"3575-1");
    
      script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : qemu vulnerabilities (USN-3575-1)");
      script_summary(english:"Checks dpkg output for updated packages.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote Ubuntu host is missing one or more security-related
    patches."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "It was discovered that QEMU incorrectly handled guest ram. A
    privileged attacker inside the guest could use this issue to cause
    QEMU to crash, resulting in a denial of service. This issue only
    affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-11334)
    
    David Buchanan discovered that QEMU incorrectly handled the VGA
    device. A privileged attacker inside the guest could use this issue to
    cause QEMU to crash, resulting in a denial of service. This issue was
    only addressed in Ubuntu 17.10. (CVE-2017-13672)
    
    Thomas Garnier discovered that QEMU incorrectly handled multiboot. An
    attacker could use this issue to cause QEMU to crash, resulting in a
    denial of service, or possibly execute arbitrary code on the host. In
    the default installation, when QEMU is used with libvirt, attackers
    would be isolated by the libvirt AppArmor profile. This issue only
    affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-14167)
    
    Tuomas Tynkkynen discovered that QEMU incorrectly handled VirtFS
    directory sharing. An attacker could use this issue to obtain
    sensitive information from host memory. (CVE-2017-15038)
    
    Eric Blake discovered that QEMU incorrectly handled memory in the NBD
    server. An attacker could use this issue to cause the NBD server to
    crash, resulting in a denial of service. This issue only affected
    Ubuntu 17.10. (CVE-2017-15118)
    
    Eric Blake discovered that QEMU incorrectly handled certain options to
    the NBD server. An attacker could use this issue to cause the NBD
    server to crash, resulting in a denial of service. This issue only
    affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-15119)
    
    Daniel Berrange discovered that QEMU incorrectly handled the VNC
    server. A remote attacker could possibly use this issue to consume
    memory, resulting in a denial of service. This issue was only
    addressed in Ubuntu 17.10. (CVE-2017-15124)
    
    Carl Brassey discovered that QEMU incorrectly handled certain
    websockets. A remote attacker could possibly use this issue to consume
    memory, resulting in a denial of service. This issue only affected
    Ubuntu 17.10. (CVE-2017-15268)
    
    Guoxiang Niu discovered that QEMU incorrectly handled the Cirrus VGA
    device. A privileged attacker inside the guest could use this issue to
    cause QEMU to crash, resulting in a denial of service.
    (CVE-2017-15289)
    
    Cyrille Chatras discovered that QEMU incorrectly handled certain PS2
    values during migration. An attacker could possibly use this issue to
    cause QEMU to crash, resulting in a denial of service, or possibly
    execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and
    Ubuntu 17.10. (CVE-2017-16845)
    
    It was discovered that QEMU incorrectly handled the Virtio Vring
    implementation. An attacker could possibly use this issue to cause
    QEMU to crash, resulting in a denial of service. This issue only
    affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-17381)
    
    Eric Blake discovered that QEMU incorrectly handled certain rounding
    operations. An attacker could possibly use this issue to cause QEMU to
    crash, resulting in a denial of service. This issue only affected
    Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-18043)
    
    Jiang Xin and Lin ZheCheng discovered that QEMU incorrectly handled
    the VGA device. A privileged attacker inside the guest could use this
    issue to cause QEMU to crash, resulting in a denial of service.
    (CVE-2018-5683).
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the Ubuntu security advisory. Tenable
    has attempted to automatically clean and format it as much as possible
    without introducing additional issues."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://usn.ubuntu.com/3575-1/"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-aarch64");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-arm");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-mips");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-misc");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-ppc");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-s390x");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-sparc");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:17.10");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/08/02");
      script_set_attribute(attribute:"patch_publication_date", value:"2018/02/20");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/21");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Ubuntu Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("ubuntu.inc");
    include("misc_func.inc");
    
    if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/Ubuntu/release");
    if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
    release = chomp(release);
    if (! preg(pattern:"^(14\.04|16\.04|17\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 14.04 / 16.04 / 17.10", "Ubuntu " + release);
    if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);
    
    flag = 0;
    
    if (ubuntu_check(osver:"14.04", pkgname:"qemu-system", pkgver:"2.0.0+dfsg-2ubuntu1.39")) flag++;
    if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-aarch64", pkgver:"2.0.0+dfsg-2ubuntu1.39")) flag++;
    if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-arm", pkgver:"2.0.0+dfsg-2ubuntu1.39")) flag++;
    if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-mips", pkgver:"2.0.0+dfsg-2ubuntu1.39")) flag++;
    if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-misc", pkgver:"2.0.0+dfsg-2ubuntu1.39")) flag++;
    if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-ppc", pkgver:"2.0.0+dfsg-2ubuntu1.39")) flag++;
    if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-sparc", pkgver:"2.0.0+dfsg-2ubuntu1.39")) flag++;
    if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-x86", pkgver:"2.0.0+dfsg-2ubuntu1.39")) flag++;
    if (ubuntu_check(osver:"16.04", pkgname:"qemu-system", pkgver:"1:2.5+dfsg-5ubuntu10.22")) flag++;
    if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-aarch64", pkgver:"1:2.5+dfsg-5ubuntu10.22")) flag++;
    if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-arm", pkgver:"1:2.5+dfsg-5ubuntu10.22")) flag++;
    if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-mips", pkgver:"1:2.5+dfsg-5ubuntu10.22")) flag++;
    if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-misc", pkgver:"1:2.5+dfsg-5ubuntu10.22")) flag++;
    if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-ppc", pkgver:"1:2.5+dfsg-5ubuntu10.22")) flag++;
    if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-s390x", pkgver:"1:2.5+dfsg-5ubuntu10.22")) flag++;
    if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-sparc", pkgver:"1:2.5+dfsg-5ubuntu10.22")) flag++;
    if (ubuntu_check(osver:"16.04", pkgname:"qemu-system-x86", pkgver:"1:2.5+dfsg-5ubuntu10.22")) flag++;
    if (ubuntu_check(osver:"17.10", pkgname:"qemu-system", pkgver:"1:2.10+dfsg-0ubuntu3.5")) flag++;
    if (ubuntu_check(osver:"17.10", pkgname:"qemu-system-aarch64", pkgver:"1:2.10+dfsg-0ubuntu3.5")) flag++;
    if (ubuntu_check(osver:"17.10", pkgname:"qemu-system-arm", pkgver:"1:2.10+dfsg-0ubuntu3.5")) flag++;
    if (ubuntu_check(osver:"17.10", pkgname:"qemu-system-mips", pkgver:"1:2.10+dfsg-0ubuntu3.5")) flag++;
    if (ubuntu_check(osver:"17.10", pkgname:"qemu-system-misc", pkgver:"1:2.10+dfsg-0ubuntu3.5")) flag++;
    if (ubuntu_check(osver:"17.10", pkgname:"qemu-system-ppc", pkgver:"1:2.10+dfsg-0ubuntu3.5")) flag++;
    if (ubuntu_check(osver:"17.10", pkgname:"qemu-system-s390x", pkgver:"1:2.10+dfsg-0ubuntu3.5")) flag++;
    if (ubuntu_check(osver:"17.10", pkgname:"qemu-system-sparc", pkgver:"1:2.10+dfsg-0ubuntu3.5")) flag++;
    if (ubuntu_check(osver:"17.10", pkgname:"qemu-system-x86", pkgver:"1:2.10+dfsg-0ubuntu3.5")) flag++;
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        extra      : ubuntu_report_get()
      );
      exit(0);
    }
    else
    {
      tested = ubuntu_pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-system / qemu-system-aarch64 / qemu-system-arm / etc");
    }
    
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2017-1248.NASL
    descriptionThis update for qemu to version 2.9.1 fixes several issues. It also announces that the qed storage format will be no longer supported in Leap 15.0. These security issues were fixed : - CVE-2017-15268: Qemu allowed remote attackers to cause a memory leak by triggering slow data-channel read operations, related to io/channel-websock.c (bsc#1062942) - CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063122) - CVE-2017-15038: Race condition in the v9fs_xattrwalk function local guest OS users to obtain sensitive information from host heap memory via vectors related to reading extended attributes (bsc#1062069) - CVE-2017-10911: The make_response function in the Linux kernel allowed guest OS users to obtain sensitive information from host OS (or other guest OS) kernel memory by leveraging the copying of uninitialized padding fields in Xen block-interface response structures (bsc#1057378) - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator support allowed local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by flushing an empty CDROM device drive (bsc#1054724) - CVE-2017-14167: Integer overflow in the load_multiboot function allowed local guest OS users to execute arbitrary code on the host via crafted multiboot header address values, which trigger an out-of-bounds write (bsc#1057585) - CVE-2017-13672: The VGA display emulator support allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update (bsc#1056334) - CVE-2017-13711: Use-after-free vulnerability allowed attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear ifq_so from pending packets (bsc#1056291). These non-security issues were fixed : - Fixed not being able to build from rpm sources due to undefined macro (bsc#1057966) - Fiedx package build failure against new glibc (bsc#1055587) This update was imported from the SUSE:SLE-12-SP3:Update update project.
    last seen2020-06-05
    modified2017-11-07
    plugin id104423
    published2017-11-07
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104423
    titleopenSUSE Security Update : qemu (openSUSE-2017-1248)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from openSUSE Security Update openSUSE-2017-1248.
    #
    # The text description of this plugin is (C) SUSE LLC.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(104423);
      script_version("3.4");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2017-10911", "CVE-2017-12809", "CVE-2017-13672", "CVE-2017-13711", "CVE-2017-14167", "CVE-2017-15038", "CVE-2017-15268", "CVE-2017-15289");
    
      script_name(english:"openSUSE Security Update : qemu (openSUSE-2017-1248)");
      script_summary(english:"Check for the openSUSE-2017-1248 patch");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote openSUSE host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "This update for qemu to version 2.9.1 fixes several issues.
    
    It also announces that the qed storage format will be no longer
    supported in Leap 15.0.
    
    These security issues were fixed :
    
      - CVE-2017-15268: Qemu allowed remote attackers to cause a
        memory leak by triggering slow data-channel read
        operations, related to io/channel-websock.c
        (bsc#1062942)
    
      - CVE-2017-15289: The mode4and5 write functions allowed
        local OS guest privileged users to cause a denial of
        service (out-of-bounds write access and Qemu process
        crash) via vectors related to dst calculation
        (bsc#1063122)
    
      - CVE-2017-15038: Race condition in the v9fs_xattrwalk
        function local guest OS users to obtain sensitive
        information from host heap memory via vectors related to
        reading extended attributes (bsc#1062069)
    
      - CVE-2017-10911: The make_response function in the Linux
        kernel allowed guest OS users to obtain sensitive
        information from host OS (or other guest OS) kernel
        memory by leveraging the copying of uninitialized
        padding fields in Xen block-interface response
        structures (bsc#1057378)
    
      - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator
        support allowed local guest OS privileged users to cause
        a denial of service (NULL pointer dereference and QEMU
        process crash) by flushing an empty CDROM device drive
        (bsc#1054724)
    
      - CVE-2017-14167: Integer overflow in the load_multiboot
        function allowed local guest OS users to execute
        arbitrary code on the host via crafted multiboot header
        address values, which trigger an out-of-bounds write
        (bsc#1057585)
    
      - CVE-2017-13672: The VGA display emulator support allowed
        local guest OS privileged users to cause a denial of
        service (out-of-bounds read and QEMU process crash) via
        vectors involving display update (bsc#1056334)
    
      - CVE-2017-13711: Use-after-free vulnerability allowed
        attackers to cause a denial of service (QEMU instance
        crash) by leveraging failure to properly clear ifq_so
        from pending packets (bsc#1056291).
    
    These non-security issues were fixed :
    
      - Fixed not being able to build from rpm sources due to
        undefined macro (bsc#1057966)
    
      - Fiedx package build failure against new glibc
        (bsc#1055587)
    
    This update was imported from the SUSE:SLE-12-SP3:Update update
    project."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1054724"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1055587"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1056291"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1056334"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1057378"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1057585"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1057966"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1062069"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1062942"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1063122"
      );
      # https://features.opensuse.org/324200
      script_set_attribute(
        attribute:"see_also",
        value:"https://features.opensuse.org/"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected qemu packages.");
      script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-arm");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-arm-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-curl");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-curl-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-dmg");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-dmg-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-iscsi");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-iscsi-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-rbd");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-rbd-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-ssh");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-ssh-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-debugsource");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-extra");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-extra-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-guest-agent");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-guest-agent-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-ipxe");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-ksm");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-kvm");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-lang");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-linux-user");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-linux-user-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-linux-user-debugsource");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-ppc");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-ppc-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-s390");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-s390-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-seabios");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-sgabios");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-testsuite");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-tools");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-tools-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-vgabios");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-x86");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-x86-debuginfo");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.3");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2017/11/07");
      script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/07");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"SuSE Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/SuSE/release");
    if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
    if (release !~ "^(SUSE42\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.3", release);
    if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    ourarch = get_kb_item("Host/cpu");
    if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
    if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);
    
    flag = 0;
    
    if ( rpm_check(release:"SUSE42.3", reference:"qemu-ipxe-1.0.0-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"qemu-linux-user-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"qemu-linux-user-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"qemu-linux-user-debugsource-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"qemu-seabios-1.10.2-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"qemu-sgabios-8-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"qemu-vgabios-1.10.2-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-arm-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-arm-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-curl-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-curl-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-dmg-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-dmg-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-iscsi-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-iscsi-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-rbd-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-rbd-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-ssh-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-ssh-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-debugsource-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-extra-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-extra-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-guest-agent-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-guest-agent-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-ksm-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-kvm-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-lang-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-ppc-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-ppc-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-s390-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-s390-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-testsuite-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-tools-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-tools-debuginfo-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-x86-2.9.1-35.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-x86-debuginfo-2.9.1-35.1") ) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-linux-user / qemu-linux-user-debuginfo / etc");
    }
    
  • NASL familyAmazon Linux Local Security Checks
    NASL idALA_ALAS-2018-1034.NASL
    descriptionAn out-of-bounds read access issue was found in the VGA display emulator built into the Quick emulator (QEMU). It could occur while reading VGA memory to update graphics display. A privileged user/process inside guest could use this flaw to crash the QEMU process on the host resulting in denial of service situation.(CVE-2017-13672) A memory leakage issue was found in the I/O channels websockets implementation of the Quick Emulator (QEMU). It could occur while sending screen updates to a client, which is slow to read and process them further. A privileged guest user could use this flaw to cause a denial of service on the host and/or potentially crash the QEMU process instance on the host.(CVE-2017-15268) A use-after-free issue was found in the Slirp networking implementation of the Quick emulator (QEMU). It occurs when a Socket referenced from multiple packets is freed while responding to a message. A user/process could use this flaw to crash the QEMU process on the host resulting in denial of service.(CVE-2017-13711 ) Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.(CVE-2018-7858) VNC server implementation in Quick Emulator (QEMU) was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host.(CVE-2017-15124) An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor
    last seen2020-06-01
    modified2020-06-02
    plugin id110457
    published2018-06-12
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110457
    titleAmazon Linux AMI : qemu-kvm (ALAS-2018-1034) (Spectre)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Amazon Linux AMI Security Advisory ALAS-2018-1034.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(110457);
      script_version("1.2");
      script_cvs_date("Date: 2019/04/05 23:25:05");
    
      script_cve_id("CVE-2017-13672", "CVE-2017-13711", "CVE-2017-15124", "CVE-2017-15268", "CVE-2018-3639", "CVE-2018-5683", "CVE-2018-7858");
      script_xref(name:"ALAS", value:"2018-1034");
    
      script_name(english:"Amazon Linux AMI : qemu-kvm (ALAS-2018-1034) (Spectre)");
      script_summary(english:"Checks rpm output for the updated packages");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Amazon Linux AMI host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "An out-of-bounds read access issue was found in the VGA display
    emulator built into the Quick emulator (QEMU). It could occur while
    reading VGA memory to update graphics display. A privileged
    user/process inside guest could use this flaw to crash the QEMU
    process on the host resulting in denial of service
    situation.(CVE-2017-13672)
    
    A memory leakage issue was found in the I/O channels websockets
    implementation of the Quick Emulator (QEMU). It could occur while
    sending screen updates to a client, which is slow to read and process
    them further. A privileged guest user could use this flaw to cause a
    denial of service on the host and/or potentially crash the QEMU
    process instance on the host.(CVE-2017-15268)
    
    A use-after-free issue was found in the Slirp networking
    implementation of the Quick emulator (QEMU). It occurs when a Socket
    referenced from multiple packets is freed while responding to a
    message. A user/process could use this flaw to crash the QEMU process
    on the host resulting in denial of service.(CVE-2017-13711 )
    
    Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA
    Emulator support, allows local guest OS privileged users to cause a
    denial of service (out-of-bounds access and QEMU process crash) by
    leveraging incorrect region calculation when updating VGA
    display.(CVE-2018-7858)
    
    VNC server implementation in Quick Emulator (QEMU) was found to be
    vulnerable to an unbounded memory allocation issue, as it did not
    throttle the framebuffer updates sent to its client. If the client did
    not consume these updates, VNC server allocates growing memory to hold
    onto this data. A malicious remote VNC client could use this flaw to
    cause DoS to the server host.(CVE-2017-15124)
    
    An industry-wide issue was found in the way many modern microprocessor
    designs have implemented speculative execution of Load & Store
    instructions (a commonly used performance optimization). It relies on
    the presence of a precisely-defined instruction sequence in the
    privileged code as well as the fact that memory read from address to
    which a recent memory write has occurred may see an older value and
    subsequently cause an update into the microprocessor's data cache even
    for speculatively executed instructions that never actually commit
    (retire). As a result, an unprivileged attacker could use this flaw to
    read privileged memory by conducting targeted cache side-channel
    attacks.(CVE-2018-3639)
    
    An out-of-bounds read access issue was found in the VGA emulator of
    QEMU. It could occur in vga_draw_text routine, while updating display
    area for a vnc client. A privileged user inside a guest could use this
    flaw to crash the QEMU process resulting in DoS.(CVE-2018-5683)"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://alas.aws.amazon.com/ALAS-2018-1034.html"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Run 'yum update qemu-kvm' to update your system."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-img");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-kvm");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-kvm-common");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-kvm-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-kvm-tools");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2018/06/08");
      script_set_attribute(attribute:"in_the_news", value:"true");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/06/12");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Amazon Linux Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    
    release = get_kb_item("Host/AmazonLinux/release");
    if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
    os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
    os_ver = os_ver[1];
    if (os_ver != "A")
    {
      if (os_ver == 'A') os_ver = 'AMI';
      audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
    }
    
    if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    if (rpm_check(release:"ALA", cpu:"x86_64", reference:"qemu-img-1.5.3-156.8.amzn1")) flag++;
    if (rpm_check(release:"ALA", cpu:"x86_64", reference:"qemu-kvm-1.5.3-156.8.amzn1")) flag++;
    if (rpm_check(release:"ALA", cpu:"x86_64", reference:"qemu-kvm-common-1.5.3-156.8.amzn1")) flag++;
    if (rpm_check(release:"ALA", cpu:"x86_64", reference:"qemu-kvm-debuginfo-1.5.3-156.8.amzn1")) flag++;
    if (rpm_check(release:"ALA", cpu:"x86_64", reference:"qemu-kvm-tools-1.5.3-156.8.amzn1")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-img / qemu-kvm / qemu-kvm-common / qemu-kvm-debuginfo / etc");
    }
    
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2019-1405.NASL
    descriptionAccording to the versions of the qemu-kvm packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - An integer overflow issue was found in the NE200 NIC emulation. It could occur while receiving packets from the network, if the size value was greater than INT_MAX. Such overflow would lead to stack buffer overflow issue. A user inside guest could use this flaw to crash the QEMU process, resulting in DoS scenario. (CVE-2018-10839) - qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP command (including guest-file-read with a large count value) to the agent via the listening socket.(CVE-2018-12617) - Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host. (CVE-2016-9602) - Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is vulnerable to an OOB r/w memory access issue. The issue could occur while loading a kernel image during the guest boot, if mh_load_end_addr address is greater than the mh_bss_end_addr address. A user or process could use this flaw to potentially achieve arbitrary code execution on a host.(CVE-2018-7550) - An out-of-bounds read access issue was found in the VGA display emulator built into the Quick emulator (QEMU). It could occur while reading VGA memory to update graphics display. A privileged user/process inside guest could use this flaw to crash the QEMU process on the host resulting in denial of service situation.(CVE-2017-13672) - An assert failure issue was found in the VGA display emulator built into the Quick emulator (QEMU). It could occur while updating graphics display, due to miscalculating region for dirty bitmap snapshot in split screen mode. A privileged user/process inside guest could use this flaw to crash the QEMU process on the host resulting in denial of service. (CVE-2017-13673) - The Network Block Device (NBD) server in Quick Emulator (QEMU), is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other requests, resulting in DoS.(CVE-2017-15119) - QEMU (aka Quick Emulator) before 2.9.0, when built with the USB OHCI Emulation support, allows local guest OS users to cause a denial of service (infinite loop) by leveraging an incorrect return value, a different vulnerability than CVE-2017-6505.(CVE-2017-9330) - Integer overflow in the macro ROUND_UP (n, d) in Quick Emulator (Qemu) allows a user to cause a denial of service (Qemu process crash). (CVE-2017-18043) - VNC server implementation in Quick Emulator (QEMU) was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host.(CVE-2017-15124) - A memory leakage issue was found in the I/O channels websockets implementation of the Quick Emulator (QEMU). It could occur while sending screen updates to a client, which is slow to read and process them further. A privileged guest user could use this flaw to cause a denial of service on the host and/or potentially crash the QEMU process instance on the host.(CVE-2017-15268) - Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is vulnerable to an OOB r/w memory access issue. The issue could occur due to an integer overflow while loading a kernel image during a guest boot. A user or process could use this flaw to potentially achieve arbitrary code execution on a host.(CVE-2017-14167) - Memory leak in QEMU (aka Quick Emulator), when built with IDE AHCI Emulation support, allows local guest OS privileged users to cause a denial of service (memory consumption) by repeatedly hot-unplugging the AHCI device.(CVE-2017-9373) - Memory leak in the serial_exit_core function in hw/char/serial.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (host memory consumption and QEMU process crash) via a large number of device unplug operations.(CVE-2017-5579) - ** DISPUTED ** The disas_insn function in target/i386/translate.c in QEMU before 2.9.0, when TCG mode without hardware acceleration is used, does not limit the instruction size, which allows local users to gain privileges by creating a modified basic block that injects code into a setuid program, as demonstrated by procmail. NOTE: the vendor has stated
    last seen2020-06-01
    modified2020-06-02
    plugin id124908
    published2019-05-14
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/124908
    titleEulerOS Virtualization for ARM 64 3.0.1.0 : qemu-kvm (EulerOS-SA-2019-1405)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(124908);
      script_version("1.5");
      script_cvs_date("Date: 2019/06/27 13:33:25");
    
      script_cve_id(
        "CVE-2016-9602",
        "CVE-2017-13672",
        "CVE-2017-13673",
        "CVE-2017-14167",
        "CVE-2017-15119",
        "CVE-2017-15124",
        "CVE-2017-15268",
        "CVE-2017-18043",
        "CVE-2017-5579",
        "CVE-2017-8284",
        "CVE-2017-8379",
        "CVE-2017-9330",
        "CVE-2017-9373",
        "CVE-2018-10839",
        "CVE-2018-12617",
        "CVE-2018-7550"
      );
    
      script_name(english:"EulerOS Virtualization for ARM 64 3.0.1.0 : qemu-kvm (EulerOS-SA-2019-1405)");
      script_summary(english:"Checks the rpm output for the updated packages.");
    
      script_set_attribute(attribute:"synopsis", value:
    "The remote EulerOS Virtualization for ARM 64 host is missing multiple security
    updates.");
      script_set_attribute(attribute:"description", value:
    "According to the versions of the qemu-kvm packages installed, the
    EulerOS Virtualization for ARM 64 installation on the remote host is
    affected by the following vulnerabilities :
    
      - An integer overflow issue was found in the NE200 NIC
        emulation. It could occur while receiving packets from
        the network, if the size value was greater than
        INT_MAX. Such overflow would lead to stack buffer
        overflow issue. A user inside guest could use this flaw
        to crash the QEMU process, resulting in DoS scenario.
        (CVE-2018-10839)
    
      - qmp_guest_file_read in qga/commands-posix.c and
        qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent)
        in QEMU 2.12.50 has an integer overflow causing a
        g_malloc0() call to trigger a segmentation fault when
        trying to allocate a large memory chunk. The
        vulnerability can be exploited by sending a crafted QMP
        command (including guest-file-read with a large count
        value) to the agent via the listening
        socket.(CVE-2018-12617)
    
      - Qemu before version 2.9 is vulnerable to an improper
        link following when built with the VirtFS. A privileged
        user inside guest could use this flaw to access host
        file system beyond the shared folder and potentially
        escalating their privileges on a host. (CVE-2016-9602)
    
      - Quick Emulator (QEMU), compiled with the PC System
        Emulator with multiboot feature support, is vulnerable
        to an OOB r/w memory access issue. The issue could
        occur while loading a kernel image during the guest
        boot, if mh_load_end_addr address is greater than the
        mh_bss_end_addr address. A user or process could use
        this flaw to potentially achieve arbitrary code
        execution on a host.(CVE-2018-7550)
    
      - An out-of-bounds read access issue was found in the VGA
        display emulator built into the Quick emulator (QEMU).
        It could occur while reading VGA memory to update
        graphics display. A privileged user/process inside
        guest could use this flaw to crash the QEMU process on
        the host resulting in denial of service
        situation.(CVE-2017-13672)
    
      - An assert failure issue was found in the VGA display
        emulator built into the Quick emulator (QEMU). It could
        occur while updating graphics display, due to
        miscalculating region for dirty bitmap snapshot in
        split screen mode. A privileged user/process inside
        guest could use this flaw to crash the QEMU process on
        the host resulting in denial of service.
        (CVE-2017-13673)
    
      - The Network Block Device (NBD) server in Quick Emulator
        (QEMU), is vulnerable to a denial of service issue. It
        could occur if a client sent large option requests,
        making the server waste CPU time on reading up to 4GB
        per request. A client could use this flaw to keep the
        NBD server from serving other requests, resulting in
        DoS.(CVE-2017-15119)
    
      - QEMU (aka Quick Emulator) before 2.9.0, when built with
        the USB OHCI Emulation support, allows local guest OS
        users to cause a denial of service (infinite loop) by
        leveraging an incorrect return value, a different
        vulnerability than CVE-2017-6505.(CVE-2017-9330)
    
      - Integer overflow in the macro ROUND_UP (n, d) in Quick
        Emulator (Qemu) allows a user to cause a denial of
        service (Qemu process crash). (CVE-2017-18043)
    
      - VNC server implementation in Quick Emulator (QEMU) was
        found to be vulnerable to an unbounded memory
        allocation issue, as it did not throttle the
        framebuffer updates sent to its client. If the client
        did not consume these updates, VNC server allocates
        growing memory to hold onto this data. A malicious
        remote VNC client could use this flaw to cause DoS to
        the server host.(CVE-2017-15124)
    
      - A memory leakage issue was found in the I/O channels
        websockets implementation of the Quick Emulator (QEMU).
        It could occur while sending screen updates to a
        client, which is slow to read and process them further.
        A privileged guest user could use this flaw to cause a
        denial of service on the host and/or potentially crash
        the QEMU process instance on the host.(CVE-2017-15268)
    
      - Quick Emulator (QEMU), compiled with the PC System
        Emulator with multiboot feature support, is vulnerable
        to an OOB r/w memory access issue. The issue could
        occur due to an integer overflow while loading a kernel
        image during a guest boot. A user or process could use
        this flaw to potentially achieve arbitrary code
        execution on a host.(CVE-2017-14167)
    
      - Memory leak in QEMU (aka Quick Emulator), when built
        with IDE AHCI Emulation support, allows local guest OS
        privileged users to cause a denial of service (memory
        consumption) by repeatedly hot-unplugging the AHCI
        device.(CVE-2017-9373)
    
      - Memory leak in the serial_exit_core function in
        hw/char/serial.c in QEMU (aka Quick Emulator) allows
        local guest OS privileged users to cause a denial of
        service (host memory consumption and QEMU process
        crash) via a large number of device unplug
        operations.(CVE-2017-5579)
    
      - ** DISPUTED ** The disas_insn function in
        target/i386/translate.c in QEMU before 2.9.0, when TCG
        mode without hardware acceleration is used, does not
        limit the instruction size, which allows local users to
        gain privileges by creating a modified basic block that
        injects code into a setuid program, as demonstrated by
        procmail. NOTE: the vendor has stated 'this bug does
        not violate any security guarantees QEMU
        makes.'(CVE-2017-8284)
    
      - Memory leak in the keyboard input event handlers
        support in QEMU (aka Quick Emulator) allows local guest
        OS privileged users to cause a denial of service (host
        memory consumption) by rapidly generating large
        keyboard events.(CVE-2017-8379)
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the EulerOS security advisory. Tenable
    has attempted to automatically clean and format it as much as possible
    without introducing additional issues.");
      # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-1405
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?21fa9e3c");
      script_set_attribute(attribute:"solution", value:
    "Update the affected qemu-kvm packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2019/05/07");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/14");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:qemu-img");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:qemu-kvm");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:qemu-kvm-common");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:qemu-kvm-tools");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.1.0");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"Huawei Local Security Checks");
    
      script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version");
    
      exit(0);
    }
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    
    release = get_kb_item("Host/EulerOS/release");
    if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
    uvp = get_kb_item("Host/EulerOS/uvp_version");
    if (uvp != "3.0.1.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.1.0");
    if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
    if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);
    
    flag = 0;
    
    pkgs = ["qemu-img-2.8.1-30.025",
            "qemu-kvm-2.8.1-30.025",
            "qemu-kvm-common-2.8.1-30.025",
            "qemu-kvm-tools-2.8.1-30.025"];
    
    foreach (pkg in pkgs)
      if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++;
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-kvm");
    }
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2017-8DB9C497F9.NASL
    description - Fix ppc64 KVM failure (bz #1501936) - CVE-2017-15038: 9p: information disclosure when reading extended attributes (bz #1499111) - CVE-2017-15268: potential memory exhaustion via websock connection to VNC (bz #1496882) ---- qemu-pr-helper didn
    last seen2020-06-05
    modified2018-01-15
    plugin id105928
    published2018-01-15
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/105928
    titleFedora 27 : 2:qemu (2017-8db9c497f9)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory FEDORA-2017-8db9c497f9.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(105928);
      script_version("1.4");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2017-15038", "CVE-2017-15268");
      script_xref(name:"FEDORA", value:"2017-8db9c497f9");
    
      script_name(english:"Fedora 27 : 2:qemu (2017-8db9c497f9)");
      script_summary(english:"Checks rpm output for the updated package.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Fedora host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "  - Fix ppc64 KVM failure (bz #1501936)
    
      - CVE-2017-15038: 9p: information disclosure when reading
        extended attributes (bz #1499111)
    
      - CVE-2017-15268: potential memory exhaustion via websock
        connection to VNC (bz #1496882)
    
    ----
    
    qemu-pr-helper didn't work due to a change in the
    libmultipath/libmpathpersist APIs exposed by
    device-mapper-multipath-devel. This has been fixed now. Other small
    changes to the qemu-pr-helper service are included.
    
    ----
    
    Backport qemu-pr-helper from QEMU 2.11. This daemon allows
    unprivileged users (who have access to the daemon) to use persistent
    reservation commands on both regular disks and multipath block
    devices.
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the Fedora update system website.
    Tenable has attempted to automatically clean and format it as much as
    possible without introducing additional issues."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bodhi.fedoraproject.org/updates/FEDORA-2017-8db9c497f9"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected 2:qemu package."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:2:qemu");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:27");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/10/10");
      script_set_attribute(attribute:"patch_publication_date", value:"2017/11/11");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/15");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Fedora Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/RedHat/release");
    if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
    os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
    os_ver = os_ver[1];
    if (! preg(pattern:"^27([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 27", "Fedora " + os_ver);
    
    if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
    
    
    flag = 0;
    if (rpm_check(release:"FC27", reference:"qemu-2.10.1-1.fc27", epoch:"2")) flag++;
    
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_WARNING,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "2:qemu");
    }
    
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2018-1104.NASL
    descriptionAn update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. The following packages have been upgraded to a later upstream version: qemu-kvm-rhev (2.10.0). (BZ#1470749) Security Fix(es) : * Qemu: stack-based buffer overflow in NBD server triggered via long export name (CVE-2017-15118) * Qemu: DoS via large option request (CVE-2017-15119) * Qemu: vga: OOB read access during display update (CVE-2017-13672) * Qemu: vga: reachable assert failure during display update (CVE-2017-13673) * Qemu: Slirp: use-after-free when sending response (CVE-2017-13711) * Qemu: memory exhaustion through framebuffer update request message in VNC server (CVE-2017-15124) * Qemu: I/O: potential memory exhaustion via websock connection to VNC (CVE-2017-15268) * Qemu: Out-of-bounds read in vga_draw_text routine (CVE-2018-5683) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank David Buchanan for reporting CVE-2017-13672 and CVE-2017-13673; Wjjzhang (Tencent.com) for reporting CVE-2017-13711; and Jiang Xin and Lin ZheCheng for reporting CVE-2018-5683. The CVE-2017-15118 and CVE-2017-15119 issues were discovered by Eric Blake (Red Hat) and the CVE-2017-15124 issue was discovered by Daniel Berrange (Red Hat).
    last seen2020-06-01
    modified2020-06-02
    plugin id109070
    published2018-04-17
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109070
    titleRHEL 7 : Virtualization (RHSA-2018:1104)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Red Hat Security Advisory RHSA-2018:1104. The text 
    # itself is copyright (C) Red Hat, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(109070);
      script_version("1.9");
      script_cvs_date("Date: 2019/10/24 15:35:44");
    
      script_cve_id("CVE-2017-13672", "CVE-2017-13673", "CVE-2017-13711", "CVE-2017-15118", "CVE-2017-15119", "CVE-2017-15124", "CVE-2017-15268", "CVE-2018-5683");
      script_xref(name:"RHSA", value:"2018:1104");
    
      script_name(english:"RHEL 7 : Virtualization (RHSA-2018:1104)");
      script_summary(english:"Checks the rpm output for the updated packages");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Red Hat host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "An update for qemu-kvm-rhev is now available for Red Hat
    Virtualization 4 for Red Hat Enterprise Linux 7.
    
    Red Hat Product Security has rated this update as having a security
    impact of Important. A Common Vulnerability Scoring System (CVSS) base
    score, which gives a detailed severity rating, is available for each
    vulnerability from the CVE link(s) in the References section.
    
    KVM (Kernel-based Virtual Machine) is a full virtualization solution
    for Linux on a variety of architectures. The qemu-kvm-rhev packages
    provide the user-space component for running virtual machines that use
    KVM in environments managed by Red Hat products.
    
    The following packages have been upgraded to a later upstream version:
    qemu-kvm-rhev (2.10.0). (BZ#1470749)
    
    Security Fix(es) :
    
    * Qemu: stack-based buffer overflow in NBD server triggered via long
    export name (CVE-2017-15118)
    
    * Qemu: DoS via large option request (CVE-2017-15119)
    
    * Qemu: vga: OOB read access during display update (CVE-2017-13672)
    
    * Qemu: vga: reachable assert failure during display update
    (CVE-2017-13673)
    
    * Qemu: Slirp: use-after-free when sending response (CVE-2017-13711)
    
    * Qemu: memory exhaustion through framebuffer update request message
    in VNC server (CVE-2017-15124)
    
    * Qemu: I/O: potential memory exhaustion via websock connection to VNC
    (CVE-2017-15268)
    
    * Qemu: Out-of-bounds read in vga_draw_text routine (CVE-2018-5683)
    
    For more details about the security issue(s), including the impact, a
    CVSS score, and other related information, refer to the CVE page(s)
    listed in the References section.
    
    Red Hat would like to thank David Buchanan for reporting
    CVE-2017-13672 and CVE-2017-13673; Wjjzhang (Tencent.com) for
    reporting CVE-2017-13711; and Jiang Xin and Lin ZheCheng for reporting
    CVE-2018-5683. The CVE-2017-15118 and CVE-2017-15119 issues were
    discovered by Eric Blake (Red Hat) and the CVE-2017-15124 issue was
    discovered by Daniel Berrange (Red Hat)."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/errata/RHSA-2018:1104"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2017-13672"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2017-13673"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2017-13711"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2017-15118"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2017-15119"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2017-15124"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2017-15268"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2018-5683"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-img-rhev");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-common-rhev");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-tools-rhev");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/08/29");
      script_set_attribute(attribute:"patch_publication_date", value:"2018/04/10");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/17");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Red Hat Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("misc_func.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/RedHat/release");
    if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
    os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
    os_ver = os_ver[1];
    if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.x", "Red Hat " + os_ver);
    
    if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);
    if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);
    
    yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
    if (!empty_or_null(yum_updateinfo)) 
    {
      rhsa = "RHSA-2018:1104";
      yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
      if (!empty_or_null(yum_report))
      {
        security_report_v4(
          port       : 0,
          severity   : SECURITY_HOLE,
          extra      : yum_report 
        );
        exit(0);
      }
      else
      {
        audit_message = "affected by Red Hat security advisory " + rhsa;
        audit(AUDIT_OS_NOT, audit_message);
      }
    }
    else
    {
      flag = 0;
    
      if (! (rpm_exists(release:"RHEL7", rpm:"qemu-kvm-rhev-2.10.0"))) audit(AUDIT_PACKAGE_NOT_INSTALLED, "Virtualization");
    
      if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"qemu-img-rhev-2.10.0-21.el7")) flag++;
      if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"qemu-kvm-common-rhev-2.10.0-21.el7")) flag++;
      if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"qemu-kvm-rhev-2.10.0-21.el7")) flag++;
      if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"qemu-kvm-rhev-debuginfo-2.10.0-21.el7")) flag++;
      if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"qemu-kvm-tools-rhev-2.10.0-21.el7")) flag++;
    
      if (flag)
      {
        security_report_v4(
          port       : 0,
          severity   : SECURITY_HOLE,
          extra      : rpm_report_get() + redhat_report_package_caveat()
        );
        exit(0);
      }
      else
      {
        tested = pkg_tests_get();
        if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
        else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-img-rhev / qemu-kvm-common-rhev / qemu-kvm-rhev / etc");
      }
    }
    
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2018-1201.NASL
    descriptionAccording to the versions of the qemu-kvm packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - QEMU (aka Quick Emulator), when built with the VGA display emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update.(CVE-2017-13672) - Use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU (aka Quick Emulator) allows attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear ifq_so from pending packets.(CVE-2017-13711) - VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host.(CVE-2017-15124) - Qemu through 2.10.0 allows remote attackers to cause a memory leak by triggering slow data-channel read operations, related to io/channel-websock.c.(CVE-2017-15268) - The vga_draw_text function in Qemu allows local OS guest privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging improper memory address validation.(CVE-2018-5683) - An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load i1/4+ Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor
    last seen2020-05-06
    modified2018-07-03
    plugin id110865
    published2018-07-03
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110865
    titleEulerOS 2.0 SP3 : qemu-kvm (EulerOS-SA-2018-1201)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(110865);
      script_version("1.7");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/04");
    
      script_cve_id(
        "CVE-2017-13672",
        "CVE-2017-13711",
        "CVE-2017-15124",
        "CVE-2017-15268",
        "CVE-2018-3639",
        "CVE-2018-5683",
        "CVE-2018-7858"
      );
    
      script_name(english:"EulerOS 2.0 SP3 : qemu-kvm (EulerOS-SA-2018-1201)");
      script_summary(english:"Checks the rpm output for the updated packages.");
    
      script_set_attribute(attribute:"synopsis", value:
    "The remote EulerOS host is missing multiple security updates.");
      script_set_attribute(attribute:"description", value:
    "According to the versions of the qemu-kvm packages installed, the
    EulerOS installation on the remote host is affected by the following
    vulnerabilities :
    
      - QEMU (aka Quick Emulator), when built with the VGA
        display emulator support, allows local guest OS
        privileged users to cause a denial of service
        (out-of-bounds read and QEMU process crash) via vectors
        involving display update.(CVE-2017-13672)
    
      - Use-after-free vulnerability in the sofree function in
        slirp/socket.c in QEMU (aka Quick Emulator) allows
        attackers to cause a denial of service (QEMU instance
        crash) by leveraging failure to properly clear ifq_so
        from pending packets.(CVE-2017-13711)
    
      - VNC server implementation in Quick Emulator (QEMU)
        2.11.0 and older was found to be vulnerable to an
        unbounded memory allocation issue, as it did not
        throttle the framebuffer updates sent to its client. If
        the client did not consume these updates, VNC server
        allocates growing memory to hold onto this data. A
        malicious remote VNC client could use this flaw to
        cause DoS to the server host.(CVE-2017-15124)
    
      - Qemu through 2.10.0 allows remote attackers to cause a
        memory leak by triggering slow data-channel read
        operations, related to
        io/channel-websock.c.(CVE-2017-15268)
    
      - The vga_draw_text function in Qemu allows local OS
        guest privileged users to cause a denial of service
        (out-of-bounds read and QEMU process crash) by
        leveraging improper memory address
        validation.(CVE-2018-5683)
    
      - An industry-wide issue was found in the way many modern
        microprocessor designs have implemented speculative
        execution of Load i1/4+ Store instructions (a commonly
        used performance optimization). It relies on the
        presence of a precisely-defined instruction sequence in
        the privileged code as well as the fact that memory
        read from address to which a recent memory write has
        occurred may see an older value and subsequently cause
        an update into the microprocessor's data cache even for
        speculatively executed instructions that never actually
        commit (retire). As a result, an unprivileged attacker
        could use this flaw to read privileged memory by
        conducting targeted cache side-channel attacks.
        (CVE-2018-3639)
    
      - Quick Emulator (aka QEMU), when built with the Cirrus
        CLGD 54xx VGA Emulator support, allows local guest OS
        privileged users to cause a denial of service
        (out-of-bounds access and QEMU process crash) by
        leveraging incorrect region calculation when updating
        VGA display.(CVE-2018-7858)
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the EulerOS security advisory. Tenable
    has attempted to automatically clean and format it as much as possible
    without introducing additional issues.");
      # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2018-1201
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9f82cacb");
      script_set_attribute(attribute:"solution", value:
    "Update the affected qemu-kvm packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2018/06/23");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/03");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:qemu-img");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:qemu-kvm");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:qemu-kvm-common");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"Huawei Local Security Checks");
    
      script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
      script_exclude_keys("Host/EulerOS/uvp_version");
    
      exit(0);
    }
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    
    release = get_kb_item("Host/EulerOS/release");
    if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
    if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");
    
    sp = get_kb_item("Host/EulerOS/sp");
    if (isnull(sp) || sp !~ "^(3)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3");
    
    uvp = get_kb_item("Host/EulerOS/uvp_version");
    if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3", "EulerOS UVP " + uvp);
    
    if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);
    
    flag = 0;
    
    pkgs = ["qemu-img-1.5.3-156.2.h2",
            "qemu-kvm-1.5.3-156.2.h2",
            "qemu-kvm-common-1.5.3-156.2.h2"];
    
    foreach (pkg in pkgs)
      if (rpm_check(release:"EulerOS-2.0", sp:"3", reference:pkg)) flag++;
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-kvm");
    }
    
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2018-0816.NASL
    descriptionFrom Red Hat Security Advisory 2018:0816 : An update for qemu-kvm is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link (s) in the References section. Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Security Fix(es) : * Qemu: vga: OOB read access during display update (CVE-2017-13672) * Qemu: Slirp: use-after-free when sending response (CVE-2017-13711) * Qemu: memory exhaustion through framebuffer update request message in VNC server (CVE-2017-15124) * Qemu: I/O: potential memory exhaustion via websock connection to VNC (CVE-2017-15268) * Qemu: Out-of-bounds read in vga_draw_text routine (CVE-2018-5683) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank David Buchanan for reporting CVE-2017-13672; Wjjzhang (Tencent.com) for reporting CVE-2017-13711; and Jiang Xin and Lin ZheCheng for reporting CVE-2018-5683. The CVE-2017-15124 issue was discovered by Daniel Berrange (Red Hat). Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.5 Release Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id109106
    published2018-04-18
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109106
    titleOracle Linux 7 : qemu-kvm (ELSA-2018-0816)
  • NASL familyAmazon Linux Local Security Checks
    NASL idAL2_ALAS-2018-1034.NASL
    descriptionAn out-of-bounds read access issue was found in the VGA display emulator built into the Quick emulator (QEMU). It could occur while reading VGA memory to update graphics display. A privileged user/process inside guest could use this flaw to crash the QEMU process on the host resulting in denial of service situation.(CVE-2017-13672) A memory leakage issue was found in the I/O channels websockets implementation of the Quick Emulator (QEMU). It could occur while sending screen updates to a client, which is slow to read and process them further. A privileged guest user could use this flaw to cause a denial of service on the host and/or potentially crash the QEMU process instance on the host.(CVE-2017-15268) A use-after-free issue was found in the Slirp networking implementation of the Quick emulator (QEMU). It occurs when a Socket referenced from multiple packets is freed while responding to a message. A user/process could use this flaw to crash the QEMU process on the host resulting in denial of service.(CVE-2017-13711 ) Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.(CVE-2018-7858) VNC server implementation in Quick Emulator (QEMU) was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host.(CVE-2017-15124) An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor
    last seen2020-06-01
    modified2020-06-02
    plugin id110451
    published2018-06-12
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110451
    titleAmazon Linux 2 : qemu-kvm (ALAS-2018-1034) (Spectre)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2017-2936-1.NASL
    descriptionThis update for qemu fixes several issues. These security issues were fixed : - CVE-2017-15268: Qemu allowed remote attackers to cause a memory leak by triggering slow data-channel read operations, related to io/channel-websock.c (bsc#1062942). - CVE-2017-9524: The qemu-nbd server when built with the Network Block Device (NBD) Server support allowed remote attackers to cause a denial of service (segmentation fault and server crash) by leveraging failure to ensure that all initialization occurs talking to a client in the nbd_negotiate function (bsc#1043808). - CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063122) - CVE-2017-15038: Race condition in the v9fs_xattrwalk function local guest OS users to obtain sensitive information from host heap memory via vectors related to reading extended attributes (bsc#1062069) - CVE-2017-10911: The make_response function in the Linux kernel allowed guest OS users to obtain sensitive information from host OS (or other guest OS) kernel memory by leveraging the copying of uninitialized padding fields in Xen block-interface response structures (bsc#1057378) - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator support allowed local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by flushing an empty CDROM device drive (bsc#1054724) - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which allowed remote attackers to cause a denial of service (daemon crash) by disconnecting during a server-to-client reply attempt (bsc#1046636) - CVE-2017-10806: Stack-based buffer overflow allowed local guest OS users to cause a denial of service (QEMU process crash) via vectors related to logging debug messages (bsc#1047674) - CVE-2017-14167: Integer overflow in the load_multiboot function allowed local guest OS users to execute arbitrary code on the host via crafted multiboot header address values, which trigger an out-of-bounds write (bsc#1057585) - CVE-2017-11434: The dhcp_decode function in slirp/bootp.c allowed local guest OS users to cause a denial of service (out-of-bounds read) via a crafted DHCP options string (bsc#1049381) - CVE-2017-11334: The address_space_write_continue function allowed local guest OS privileged users to cause a denial of service (out-of-bounds access and guest instance crash) by leveraging use of qemu_map_ram_ptr to access guest ram block area (bsc#1048902) - CVE-2017-13672: The VGA display emulator support allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update (bsc#1056334) The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id104429
    published2017-11-07
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104429
    titleSUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2017:2936-1)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2018-0816.NASL
    descriptionAn update for qemu-kvm is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link (s) in the References section. Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Security Fix(es) : * Qemu: vga: OOB read access during display update (CVE-2017-13672) * Qemu: Slirp: use-after-free when sending response (CVE-2017-13711) * Qemu: memory exhaustion through framebuffer update request message in VNC server (CVE-2017-15124) * Qemu: I/O: potential memory exhaustion via websock connection to VNC (CVE-2017-15268) * Qemu: Out-of-bounds read in vga_draw_text routine (CVE-2018-5683) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank David Buchanan for reporting CVE-2017-13672; Wjjzhang (Tencent.com) for reporting CVE-2017-13711; and Jiang Xin and Lin ZheCheng for reporting CVE-2018-5683. The CVE-2017-15124 issue was discovered by Daniel Berrange (Red Hat). Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.5 Release Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id109372
    published2018-04-27
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109372
    titleCentOS 7 : qemu-kvm (CESA-2018:0816)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2018-0816.NASL
    descriptionAn update for qemu-kvm is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link (s) in the References section. Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Security Fix(es) : * Qemu: vga: OOB read access during display update (CVE-2017-13672) * Qemu: Slirp: use-after-free when sending response (CVE-2017-13711) * Qemu: memory exhaustion through framebuffer update request message in VNC server (CVE-2017-15124) * Qemu: I/O: potential memory exhaustion via websock connection to VNC (CVE-2017-15268) * Qemu: Out-of-bounds read in vga_draw_text routine (CVE-2018-5683) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank David Buchanan for reporting CVE-2017-13672; Wjjzhang (Tencent.com) for reporting CVE-2017-13711; and Jiang Xin and Lin ZheCheng for reporting CVE-2018-5683. The CVE-2017-15124 issue was discovered by Daniel Berrange (Red Hat). Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.5 Release Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id108986
    published2018-04-11
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/108986
    titleRHEL 7 : qemu-kvm (RHSA-2018:0816)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2017-1249.NASL
    descriptionThis update for qemu fixes several issues. These security issues were fixed : - CVE-2017-15268: Qemu allowed remote attackers to cause a memory leak by triggering slow data-channel read operations, related to io/channel-websock.c (bsc#1062942). - CVE-2017-9524: The qemu-nbd server when built with the Network Block Device (NBD) Server support allowed remote attackers to cause a denial of service (segmentation fault and server crash) by leveraging failure to ensure that all initialization occurs talking to a client in the nbd_negotiate function (bsc#1043808). - CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063122) - CVE-2017-15038: Race condition in the v9fs_xattrwalk function local guest OS users to obtain sensitive information from host heap memory via vectors related to reading extended attributes (bsc#1062069) - CVE-2017-10911: The make_response function in the Linux kernel allowed guest OS users to obtain sensitive information from host OS (or other guest OS) kernel memory by leveraging the copying of uninitialized padding fields in Xen block-interface response structures (bsc#1057378) - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator support allowed local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by flushing an empty CDROM device drive (bsc#1054724) - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which allowed remote attackers to cause a denial of service (daemon crash) by disconnecting during a server-to-client reply attempt (bsc#1046636) - CVE-2017-10806: Stack-based buffer overflow allowed local guest OS users to cause a denial of service (QEMU process crash) via vectors related to logging debug messages (bsc#1047674) - CVE-2017-14167: Integer overflow in the load_multiboot function allowed local guest OS users to execute arbitrary code on the host via crafted multiboot header address values, which trigger an out-of-bounds write (bsc#1057585) - CVE-2017-11434: The dhcp_decode function in slirp/bootp.c allowed local guest OS users to cause a denial of service (out-of-bounds read) via a crafted DHCP options string (bsc#1049381) - CVE-2017-11334: The address_space_write_continue function allowed local guest OS privileged users to cause a denial of service (out-of-bounds access and guest instance crash) by leveraging use of qemu_map_ram_ptr to access guest ram block area (bsc#1048902) - CVE-2017-13672: The VGA display emulator support allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update (bsc#1056334) These non-security issues were fixed : - Fixed not being able to build from rpm sources due to undefined macro (bsc#1057966) - Fixed wrong permissions for kvm_stat.1 file - Fixed KVM lun resize not working as expected on SLES12 SP2 HV (bsc#1043176) This update was imported from the SUSE:SLE-12-SP2:Update update project.
    last seen2020-06-05
    modified2017-11-07
    plugin id104424
    published2017-11-07
    reporterThis script is Copyright (C) 2017-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/104424
    titleopenSUSE Security Update : qemu (openSUSE-2017-1249)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2018-1113.NASL
    descriptionAccording to the versions of the qemu-kvm packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - QEMU (aka Quick Emulator), when built with the VGA display emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update.(CVE-2017-13672) - Use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU (aka Quick Emulator) allows attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear ifq_so from pending packets.(CVE-2017-13711) - VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host.(CVE-2017-15124) - Qemu through 2.10.0 allows remote attackers to cause a memory leak by triggering slow data-channel read operations, related to io/channel-websock.c.(CVE-2017-15268) - The vga_draw_text function in Qemu allows local OS guest privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging improper memory address validation.(CVE-2018-5683) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-05-06
    modified2018-05-02
    plugin id109511
    published2018-05-02
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109511
    titleEulerOS 2.0 SP2 : qemu-kvm (EulerOS-SA-2018-1113)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3575-2.NASL
    descriptionUSN-3575-1 fixed vulnerabilities in QEMU. The fix for CVE-2017-11334 caused a regression in Xen environments. This update removes the problematic fix pending further investigation. We apologize for the inconvenience. Original advisory details : It was discovered that QEMU incorrectly handled guest ram. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-11334) David Buchanan discovered that QEMU incorrectly handled the VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. (CVE-2017-13672) Thomas Garnier discovered that QEMU incorrectly handled multiboot. An attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-14167) Tuomas Tynkkynen discovered that QEMU incorrectly handled VirtFS directory sharing. An attacker could use this issue to obtain sensitive information from host memory. (CVE-2017-15038) Eric Blake discovered that QEMU incorrectly handled memory in the NBD server. An attacker could use this issue to cause the NBD server to crash, resulting in a denial of service. This issue only affected Ubuntu 17.10. (CVE-2017-15118) Eric Blake discovered that QEMU incorrectly handled certain options to the NBD server. An attacker could use this issue to cause the NBD server to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-15119) Daniel Berrange discovered that QEMU incorrectly handled the VNC server. A remote attacker could possibly use this issue to consume memory, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. (CVE-2017-15124) Carl Brassey discovered that QEMU incorrectly handled certain websockets. A remote attacker could possibly use this issue to consume memory, resulting in a denial of service. This issue only affected Ubuntu 17.10. (CVE-2017-15268) Guoxiang Niu discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-15289) Cyrille Chatras discovered that QEMU incorrectly handled certain PS2 values during migration. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-16845) It was discovered that QEMU incorrectly handled the Virtio Vring implementation. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-17381) Eric Blake discovered that QEMU incorrectly handled certain rounding operations. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-18043) Jiang Xin and Lin ZheCheng discovered that QEMU incorrectly handled the VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-5683). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id107145
    published2018-03-06
    reporterUbuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/107145
    titleUbuntu 14.04 LTS / 16.04 LTS : qemu regression (USN-3575-2)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2018-1144.NASL
    descriptionAccording to the versions of the qemu-kvm package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - QEMU (aka Quick Emulator), when built with the VGA display emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update.(CVE-2017-13672) - Use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU (aka Quick Emulator) allows attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear ifq_so from pending packets.(CVE-2017-13711) - VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host.(CVE-2017-15124) - Qemu through 2.10.0 allows remote attackers to cause a memory leak by triggering slow data-channel read operations, related to io/channel-websock.c.(CVE-2017-15268) - The vga_draw_text function in Qemu allows local OS guest privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging improper memory address validation.(CVE-2018-5683) - Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.(CVE-2018-7858) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-05-06
    modified2018-05-29
    plugin id110148
    published2018-05-29
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110148
    titleEulerOS 2.0 SP1 : qemu-kvm (EulerOS-SA-2018-1144)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2019-1444.NASL
    descriptionAccording to the versions of the qemu packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An integer overflow issue was found in the NE200 NIC emulation. It could occur while receiving packets from the network, if the size value was greater than INT_MAX. Such overflow would lead to stack buffer overflow issue. A user inside guest could use this flaw to crash the QEMU process, resulting in DoS scenario. (CVE-2018-10839) - qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP command (including guest-file-read with a large count value) to the agent via the listening socket.(CVE-2018-12617) - Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host. (CVE-2016-9602) - Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is vulnerable to an OOB r/w memory access issue. The issue could occur while loading a kernel image during the guest boot, if mh_load_end_addr address is greater than the mh_bss_end_addr address. A user or process could use this flaw to potentially achieve arbitrary code execution on a host.(CVE-2018-7550) - An out-of-bounds read access issue was found in the VGA display emulator built into the Quick emulator (QEMU). It could occur while reading VGA memory to update graphics display. A privileged user/process inside guest could use this flaw to crash the QEMU process on the host resulting in denial of service situation.(CVE-2017-13672) - An assert failure issue was found in the VGA display emulator built into the Quick emulator (QEMU). It could occur while updating graphics display, due to miscalculating region for dirty bitmap snapshot in split screen mode. A privileged user/process inside guest could use this flaw to crash the QEMU process on the host resulting in denial of service. (CVE-2017-13673) - The Network Block Device (NBD) server in Quick Emulator (QEMU), is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other requests, resulting in DoS.(CVE-2017-15119) - QEMU (aka Quick Emulator) before 2.9.0, when built with the USB OHCI Emulation support, allows local guest OS users to cause a denial of service (infinite loop) by leveraging an incorrect return value, a different vulnerability than CVE-2017-6505.(CVE-2017-9330) - Integer overflow in the macro ROUND_UP (n, d) in Quick Emulator (Qemu) allows a user to cause a denial of service (Qemu process crash). (CVE-2017-18043) - VNC server implementation in Quick Emulator (QEMU) was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host.(CVE-2017-15124) - A memory leakage issue was found in the I/O channels websockets implementation of the Quick Emulator (QEMU). It could occur while sending screen updates to a client, which is slow to read and process them further. A privileged guest user could use this flaw to cause a denial of service on the host and/or potentially crash the QEMU process instance on the host.(CVE-2017-15268) - Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is vulnerable to an OOB r/w memory access issue. The issue could occur due to an integer overflow while loading a kernel image during a guest boot. A user or process could use this flaw to potentially achieve arbitrary code execution on a host.(CVE-2017-14167) - Memory leak in QEMU (aka Quick Emulator), when built with IDE AHCI Emulation support, allows local guest OS privileged users to cause a denial of service (memory consumption) by repeatedly hot-unplugging the AHCI device.(CVE-2017-9373) - Memory leak in the serial_exit_core function in hw/char/serial.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (host memory consumption and QEMU process crash) via a large number of device unplug operations.(CVE-2017-5579) - ** DISPUTED ** The disas_insn function in target/i386/translate.c in QEMU before 2.9.0, when TCG mode without hardware acceleration is used, does not limit the instruction size, which allows local users to gain privileges by creating a modified basic block that injects code into a setuid program, as demonstrated by procmail. NOTE: the vendor has stated
    last seen2020-06-01
    modified2020-06-02
    plugin id124947
    published2019-05-14
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/124947
    titleEulerOS Virtualization 3.0.1.0 : qemu (EulerOS-SA-2019-1444)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-4213.NASL
    descriptionSeveral vulnerabilities were discovered in qemu, a fast processor emulator. - CVE-2017-15038 Tuomas Tynkkynen discovered an information leak in 9pfs. - CVE-2017-15119 Eric Blake discovered that the NBD server insufficiently restricts large option requests, resulting in denial of service. - CVE-2017-15124 Daniel Berrange discovered that the integrated VNC server insufficiently restricted memory allocation, which could result in denial of service. - CVE-2017-15268 A memory leak in websockets support may result in denial of service. - CVE-2017-15289 Guoxiang Niu discovered an OOB write in the emulated Cirrus graphics adaptor which could result in denial of service. - CVE-2017-16845 Cyrille Chatras discovered an information leak in PS/2 mouse and keyboard emulation which could be exploited during instance migration. - CVE-2017-17381 Dengzhan Heyuandong Bijunhua and Liweichao discovered that an implementation error in the virtio vring implementation could result in denial of service. - CVE-2017-18043 Eric Blake discovered an integer overflow in an internally used macro which could result in denial of service. - CVE-2018-5683 Jiang Xin and Lin ZheCheng discovered an OOB memory access in the emulated VGA adaptor which could result in denial of service. - CVE-2018-7550 Cyrille Chatras discovered that an OOB memory write when using multiboot could result in the execution of arbitrary code. This update also backports a number of mitigations against the Spectre v2 vulnerability affecting modern CPUs (CVE-2017-5715 ). For additional information please refer to https://www.qemu.org/2018/01/04/spectre/
    last seen2020-06-01
    modified2020-06-02
    plugin id110208
    published2018-05-30
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110208
    titleDebian DSA-4213-1 : qemu - security update (Spectre)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2017-9149114FBA.NASL
    description - Fix usb3 drive issues with windows guests (bz #1493196) - CVE-2017-15038: 9p: information disclosure when reading extended attributes (bz #1499111) - CVE-2017-15268: potential memory exhaustion via websock connection to VNC (bz #1496882) - CVE-2017-14167: multiboot OOB access while loading kernel image (bz #1489376) - CVE-2017-13672: vga: OOB read access during display update (bz #1486561) - CVE-2017-12809: flushing of empty CDROM drives leads to NULL deref (bz #1483536) - CVE-2017-11434 slirp: out-of-bounds read while parsing dhcp options (bz #1472612) - Fix sending multimedia keys through spice (bz #1471758) - Another ppc64le binfmt fix (bz #1500526) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2017-11-08
    plugin id104446
    published2017-11-08
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104446
    titleFedora 26 : 2:qemu (2017-9149114fba)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2017-2924-1.NASL
    descriptionThis update for qemu to version 2.9.1 fixes several issues. It also announces that the qed storage format will be no longer supported in SLE 15 (fate#324200). These security issues were fixed : - CVE-2017-15268: Qemu allowed remote attackers to cause a memory leak by triggering slow data-channel read operations, related to io/channel-websock.c (bsc#1062942) - CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063122) - CVE-2017-15038: Race condition in the v9fs_xattrwalk function local guest OS users to obtain sensitive information from host heap memory via vectors related to reading extended attributes (bsc#1062069) - CVE-2017-10911: The make_response function in the Linux kernel allowed guest OS users to obtain sensitive information from host OS (or other guest OS) kernel memory by leveraging the copying of uninitialized padding fields in Xen block-interface response structures (bsc#1057378) - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator support allowed local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by flushing an empty CDROM device drive (bsc#1054724) - CVE-2017-14167: Integer overflow in the load_multiboot function allowed local guest OS users to execute arbitrary code on the host via crafted multiboot header address values, which trigger an out-of-bounds write (bsc#1057585) - CVE-2017-13672: The VGA display emulator support allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update (bsc#1056334) - CVE-2017-13711: Use-after-free vulnerability allowed attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear ifq_so from pending packets (bsc#1056291). The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id104376
    published2017-11-03
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104376
    titleSUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2017:2924-1)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20180410_QEMU_KVM_ON_SL7_X.NASL
    descriptionSecurity Fix(es) : - Qemu: vga: OOB read access during display update (CVE-2017-13672) - Qemu: Slirp: use-after-free when sending response (CVE-2017-13711) - Qemu: memory exhaustion through framebuffer update request message in VNC server (CVE-2017-15124) - Qemu: I/O: potential memory exhaustion via websock connection to VNC (CVE-2017-15268) - Qemu: Out-of-bounds read in vga_draw_text routine (CVE-2018-5683) Additional Changes :
    last seen2020-03-18
    modified2018-05-01
    plugin id109458
    published2018-05-01
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109458
    titleScientific Linux Security Update : qemu-kvm on SL7.x x86_64 (20180410)

Redhat

advisories
  • rhsa
    idRHSA-2018:0816
  • rhsa
    idRHSA-2018:1104
rpms
  • qemu-img-10:1.5.3-156.el7
  • qemu-kvm-10:1.5.3-156.el7
  • qemu-kvm-common-10:1.5.3-156.el7
  • qemu-kvm-debuginfo-10:1.5.3-156.el7
  • qemu-kvm-tools-10:1.5.3-156.el7
  • qemu-img-rhev-10:2.10.0-21.el7
  • qemu-kvm-common-rhev-10:2.10.0-21.el7
  • qemu-kvm-rhev-10:2.10.0-21.el7
  • qemu-kvm-rhev-debuginfo-10:2.10.0-21.el7
  • qemu-kvm-tools-rhev-10:2.10.0-21.el7
  • qemu-img-rhev-10:2.10.0-21.el7
  • qemu-kvm-common-rhev-10:2.10.0-21.el7
  • qemu-kvm-rhev-10:2.10.0-21.el7
  • qemu-kvm-rhev-debuginfo-10:2.10.0-21.el7
  • qemu-kvm-tools-rhev-10:2.10.0-21.el7