Vulnerabilities > CVE-2017-15119 - Resource Exhaustion vulnerability in multiple products

047910
CVSS 8.6 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
qemu
canonical
debian
redhat
CWE-400
nessus

Summary

The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 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.

Vulnerable Configurations

Part Description Count
Application
Qemu
254
Application
Redhat
1
OS
Canonical
3
OS
Debian
1

Common Attack Pattern Enumeration and Classification (CAPEC)

  • XML Ping of the Death
    An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
  • XML Entity Expansion
    An attacker submits an XML document to a target application where the XML document uses nested entity expansion to produce an excessively large output XML. XML allows the definition of macro-like structures that can be used to simplify the creation of complex structures. However, this capability can be abused to create excessive demands on a processor's CPU and memory. A small number of nested expansions can result in an exponential growth in demands on memory.
  • Inducing Account Lockout
    An attacker leverages the security functionality of the system aimed at thwarting potential attacks to launch a denial of service attack against a legitimate system user. Many systems, for instance, implement a password throttling mechanism that locks an account after a certain number of incorrect log in attempts. An attacker can leverage this throttling mechanism to lock a legitimate user out of their own account. The weakness that is being leveraged by an attacker is the very security feature that has been put in place to counteract attacks.
  • Violating Implicit Assumptions Regarding XML Content (aka XML Denial of Service (XDoS))
    XML Denial of Service (XDoS) can be applied to any technology that utilizes XML data. This is, of course, most distributed systems technology including Java, .Net, databases, and so on. XDoS is most closely associated with web services, SOAP, and Rest, because remote service requesters can post malicious XML payloads to the service provider designed to exhaust the service provider's memory, CPU, and/or disk space. The main weakness in XDoS is that the service provider generally must inspect, parse, and validate the XML messages to determine routing, workflow, security considerations, and so on. It is exactly these inspection, parsing, and validation routines that XDoS targets. There are three primary attack vectors that XDoS can navigate Target CPU through recursion: attacker creates a recursive payload and sends to service provider Target memory through jumbo payloads: service provider uses DOM to parse XML. DOM creates in memory representation of XML document, but when document is very large (for example, north of 1 Gb) service provider host may exhaust memory trying to build memory objects. XML Ping of death: attack service provider with numerous small files that clog the system. All of the above attacks exploit the loosely coupled nature of web services, where the service provider has little to no control over the service requester and any messages the service requester sends.

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 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 familySuSE Local Security Checks
    NASL idSUSE_SU-2018-0831-1.NASL
    descriptionThis update for qemu fixes the following issues: This update has the next round of Spectre v2 related patches, which now integrate with corresponding changes in libvirt. (CVE-2017-5715 bsc#1068032) The January 2018 release of qemu initially addressed the Spectre v2 vulnerability for KVM guests by exposing the spec-ctrl feature for all x86 vcpu types, which was the quick and dirty approach, but not the proper solution. We replaced our initial patch by the patches from upstream. This update defines spec_ctrl and ibpb cpu feature flags as well as new cpu models which are clones of existing models with either -IBRS or -IBPB added to the end of the model name. These new vcpu models explicitly include the new feature(s), whereas the feature flags can be added to the cpu parameter as with other features. In short, for continued Spectre v2 protection, ensure that either the appropriate cpu feature flag is added to the QEMU command-line, or one of the new cpu models is used. Although migration from older versions is supported, the new cpu features won
    last seen2020-06-01
    modified2020-06-02
    plugin id108686
    published2018-03-28
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/108686
    titleSUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2018:0831-1) (Spectre)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from SUSE update advisory SUSE-SU-2018:0831-1.
    # The text itself is copyright (C) SUSE.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(108686);
      script_version("1.7");
      script_cvs_date("Date: 2019/09/10 13:51:47");
    
      script_cve_id("CVE-2017-15119", "CVE-2017-15124", "CVE-2017-16845", "CVE-2017-17381", "CVE-2017-18030", "CVE-2017-18043", "CVE-2017-5715", "CVE-2018-5683", "CVE-2018-7550");
      script_xref(name:"IAVA", value:"2018-A-0020");
    
      script_name(english:"SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2018:0831-1) (Spectre)");
      script_summary(english:"Checks rpm output for the updated packages.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote SUSE host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "This update for qemu fixes the following issues: This update has the
    next round of Spectre v2 related patches, which now integrate with
    corresponding changes in libvirt. (CVE-2017-5715 bsc#1068032) The
    January 2018 release of qemu initially addressed the Spectre v2
    vulnerability for KVM guests by exposing the spec-ctrl feature for all
    x86 vcpu types, which was the quick and dirty approach, but not the
    proper solution. We replaced our initial patch by the patches from
    upstream. This update defines spec_ctrl and ibpb cpu feature flags as
    well as new cpu models which are clones of existing models with either
    -IBRS or -IBPB added to the end of the model name. These new vcpu
    models explicitly include the new feature(s), whereas the feature
    flags can be added to the cpu parameter as with other features. In
    short, for continued Spectre v2 protection, ensure that either the
    appropriate cpu feature flag is added to the QEMU command-line, or one
    of the new cpu models is used. Although migration from older versions
    is supported, the new cpu features won't be properly exposed to the
    guest until it is restarted with the cpu features explicitly added. A
    reboot is insufficient. A warning patch is added which attempts to
    detect a migration from a qemu version which had the quick and dirty
    fix (it only detects certain cases, but hopefully is helpful.) For
    additional information on Spectre v2 as it relates to QEMU, see:
    https://www.qemu.org/2018/02/14/qemu-2-11-1-and-spectre-update/ A
    patch is added to continue to detect Spectre v2 mitigation features
    (as shown by cpuid), and if found provide that feature to guests, even
    if running on older KVM (kernel) versions which do not yet expose that
    feature to QEMU. (bsc#1082276) These two patches will be removed when
    we can reasonably assume everyone is running with the appropriate
    updates. Also security fixes for the following CVE issues are 
    included :
    
      - CVE-2017-15119: The Network Block Device (NBD) server in
        Quick Emulator (QEMU), was 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. (bsc#1070144)
    
      - CVE-2017-15124: 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. (bsc#1073489)
    
      - CVE-2017-16845: The PS2 driver in Qemu did not validate
        'rptr' and 'count' values during guest migration,
        leading to out-of-bounds access. (bsc#1068613)
    
      - CVE-2017-17381: The Virtio Vring implementation in QEMU
        allowed local OS guest users to cause a denial of
        service (divide-by-zero error and QEMU process crash) by
        unsetting vring alignment while updating Virtio rings.
        (bsc#1071228)
    
      - CVE-2017-18030: A problem in the Cirrus driver in Qemu
        allowed local OS guest privileged users to cause a
        denial of service (out-of-bounds array access and QEMU
        process crash) via vectors related to negative pitch.
        (bsc#1076179)
    
      - CVE-2017-18043: Integer overflow in the macro ROUND_UP
        (n, d) in Quick Emulator (Qemu) allowed a user to cause
        a denial of service (Qemu process crash). (bsc#1076775)
    
      - CVE-2018-5683: The VGA driver in Qemu allowed 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.
        (bsc#1076114)
    
      - CVE-2018-7550: The multiboot functionality in Quick
        Emulator (aka QEMU) allowed local guest OS users to
        execute arbitrary code on the QEMU host via an
        out-of-bounds read or write memory access. (bsc#1083291)
        Also the following bugs were fixed :
    
      - Eliminate bogus use of CPUID_7_0_EDX_PRED_CMD which
        we've carried since the initial Spectre v2 patch was
        added. EDX bit 27 of CPUID Leaf 07H, Sub-leaf 0 provides
        status on STIBP, and not the PRED_CMD MSR. Exposing the
        STIBP CPUID feature bit to the guest is wrong in
        general, since the VM doesn't directly control the
        scheduling of physical hyperthreads. This is left
        strictly to the L0 hypervisor.
    
      - Spectre fixes for IBM Z series by providing more hw
        features to guests (bsc#1076814)
    
      - Pre-add group kvm for qemu-tools (bsc#1040202)
    
      - the qemu-tools package also needs a prerequire of group
        management tools, from the shadow package. (bsc#1085598)
    
    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."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1040202"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1068032"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1068613"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1070144"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1071228"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1073489"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1076114"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1076179"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1076775"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1076814"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1082276"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1083291"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1085598"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.qemu.org/2018/02/14/qemu-2-11-1-and-spectre-update/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-15119/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-15124/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-16845/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-17381/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-18030/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-18043/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-5715/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2018-5683/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2018-7550/"
      );
      # https://www.suse.com/support/update/announcement/2018/suse-su-20180831-1/
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?788addb9"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "To install this SUSE Security Update use the SUSE recommended
    installation methods like YaST online_update or 'zypper patch'.
    
    Alternatively you can run the command listed for your product :
    
    SUSE Linux Enterprise Server for Raspberry Pi 12-SP2:zypper in -t
    patch SUSE-SLE-RPI-12-SP2-2018-555=1
    
    SUSE Linux Enterprise Server 12-SP2:zypper in -t patch
    SUSE-SLE-SERVER-12-SP2-2018-555=1
    
    SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch
    SUSE-SLE-DESKTOP-12-SP2-2018-555=1"
      );
      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:H/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:H/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:"exploited_by_malware", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-curl");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-curl-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-rbd");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-rbd-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-ssh");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-ssh-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-debugsource");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-guest-agent");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-guest-agent-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-kvm");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-lang");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-s390");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-s390-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-tools");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-tools-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-x86");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-x86-debuginfo");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/17");
      script_set_attribute(attribute:"patch_publication_date", value:"2018/03/27");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/28");
      script_set_attribute(attribute:"in_the_news", value:"true");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_set_attribute(attribute:"stig_severity", value:"I");
      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:"SuSE Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
    if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
    os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
    os_ver = os_ver[1];
    if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver);
    
    if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);
    
    sp = get_kb_item("Host/SuSE/patchlevel");
    if (isnull(sp)) sp = "0";
    if (os_ver == "SLES12" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2", os_ver + " SP" + sp);
    if (os_ver == "SLED12" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP2", os_ver + " SP" + sp);
    
    
    flag = 0;
    if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"qemu-block-rbd-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"qemu-block-rbd-debuginfo-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"qemu-x86-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"qemu-x86-debuginfo-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", cpu:"s390x", reference:"qemu-s390-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", cpu:"s390x", reference:"qemu-s390-debuginfo-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-block-curl-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-block-curl-debuginfo-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-block-ssh-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-block-ssh-debuginfo-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-debugsource-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-guest-agent-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-guest-agent-debuginfo-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-lang-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-tools-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-tools-debuginfo-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-kvm-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"qemu-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"qemu-block-curl-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"qemu-block-curl-debuginfo-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"qemu-debugsource-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"qemu-kvm-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"qemu-tools-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"qemu-tools-debuginfo-2.6.2-41.37.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"qemu-x86-2.6.2-41.37.1")) 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");
    }
    
  • 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 familySuSE Local Security Checks
    NASL idSUSE_SU-2018-0762-1.NASL
    descriptionThis update for qemu fixes the following issues: This update has the next round of Spectre v2 related patches, which now integrate with corresponding changes in libvirt. (CVE-2017-5715 bsc#1068032) The January 2018 release of qemu initially addressed the Spectre v2 vulnerability for KVM guests by exposing the spec-ctrl feature for all x86 vcpu types, which was the quick and dirty approach, but not the proper solution. We replaced our initial patch by the patches from upstream. This update defines spec_ctrl and ibpb cpu feature flags as well as new cpu models which are clones of existing models with either -IBRS or -IBPB added to the end of the model name. These new vcpu models explicitly include the new feature(s), whereas the feature flags can be added to the cpu parameter as with other features. In short, for continued Spectre v2 protection, ensure that either the appropriate cpu feature flag is added to the QEMU command-line, or one of the new cpu models is used. Although migration from older versions is supported, the new cpu features won
    last seen2020-06-01
    modified2020-06-02
    plugin id108533
    published2018-03-22
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/108533
    titleSUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2018:0762-1) (Spectre)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from SUSE update advisory SUSE-SU-2018:0762-1.
    # The text itself is copyright (C) SUSE.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(108533);
      script_version("1.7");
      script_cvs_date("Date: 2019/09/10 13:51:47");
    
      script_cve_id("CVE-2017-15119", "CVE-2017-15124", "CVE-2017-16845", "CVE-2017-17381", "CVE-2017-18043", "CVE-2017-5715", "CVE-2018-5683", "CVE-2018-7550");
      script_xref(name:"IAVA", value:"2018-A-0020");
    
      script_name(english:"SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2018:0762-1) (Spectre)");
      script_summary(english:"Checks rpm output for the updated packages.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote SUSE host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "This update for qemu fixes the following issues: This update has the
    next round of Spectre v2 related patches, which now integrate with
    corresponding changes in libvirt. (CVE-2017-5715 bsc#1068032) The
    January 2018 release of qemu initially addressed the Spectre v2
    vulnerability for KVM guests by exposing the spec-ctrl feature for all
    x86 vcpu types, which was the quick and dirty approach, but not the
    proper solution. We replaced our initial patch by the patches from
    upstream. This update defines spec_ctrl and ibpb cpu feature flags as
    well as new cpu models which are clones of existing models with either
    -IBRS or -IBPB added to the end of the model name. These new vcpu
    models explicitly include the new feature(s), whereas the feature
    flags can be added to the cpu parameter as with other features. In
    short, for continued Spectre v2 protection, ensure that either the
    appropriate cpu feature flag is added to the QEMU command-line, or one
    of the new cpu models is used. Although migration from older versions
    is supported, the new cpu features won't be properly exposed to the
    guest until it is restarted with the cpu features explicitly added. A
    reboot is insufficient. A warning patch is added which attempts to
    detect a migration from a qemu version which had the quick and dirty
    fix (it only detects certain cases, but hopefully is helpful.) For
    additional information on Spectre v2 as it relates to QEMU, see:
    https://www.qemu.org/2018/02/14/qemu-2-11-1-and-spectre-update/ A
    patch is added to continue to detect Spectre v2 mitigation features
    (as shown by cpuid), and if found provide that feature to guests, even
    if running on older KVM (kernel) versions which do not yet expose that
    feature to QEMU. (bsc#1082276) These two patches will be removed when
    we can reasonably assume everyone is running with the appropriate
    updates. Spectre fixes for IBM Z Series were included by providing
    more hw features to guests (bsc#1076813) Also security fixes for the
    following CVE issues are included :
    
      - CVE-2017-17381: The Virtio Vring implementation in QEMU
        allowed local OS guest users to cause a denial of
        service (divide-by-zero error and QEMU process crash) by
        unsetting vring alignment while updating Virtio rings.
        (bsc#1071228)
    
      - CVE-2017-16845: The PS2 driver in Qemu did not validate
        'rptr' and 'count' values during guest migration,
        leading to out-of-bounds access. (bsc#1068613)
    
      - CVE-2017-15119: The Network Block Device (NBD) server in
        Quick Emulator (QEMU), was 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. (bsc#1070144)
    
      - CVE-2017-18043: Integer overflow in the macro ROUND_UP
        (n, d) in Quick Emulator (Qemu) allowed a user to cause
        a denial of service (Qemu process crash). (bsc#1076775)
    
      - CVE-2018-5683: The VGA driver in Qemu allowed 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.
        (bsc#1076114)
    
      - CVE-2018-7550: The multiboot functionality in Quick
        Emulator (aka QEMU) allowed local guest OS users to
        execute arbitrary code on the QEMU host via an
        out-of-bounds read or write memory access. (bsc#1083291)
    
      - CVE-2017-15124: 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. (bsc#1073489) Additional bugs
        fixed :
    
      - Fix pcihp for 1.6 and older machine types (bsc#1074572)
    
      - Fix packaging dependencies (coreutils) for qemu-ksm
        package (bsc#1040202)
    
    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."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1040202"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1068032"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1068613"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1070144"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1071228"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1073489"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1074572"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1076114"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1076775"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1076813"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1082276"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1083291"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.qemu.org/2018/02/14/qemu-2-11-1-and-spectre-update/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-15119/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-15124/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-16845/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-17381/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-18043/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-5715/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2018-5683/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2018-7550/"
      );
      # https://www.suse.com/support/update/announcement/2018/suse-su-20180762-1/
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?5676926a"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "To install this SUSE Security Update use YaST online_update.
    Alternatively you can run the command listed for your product :
    
    SUSE Linux Enterprise Server 12-SP3:zypper in -t patch
    SUSE-SLE-SERVER-12-SP3-2018-516=1
    
    SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch
    SUSE-SLE-DESKTOP-12-SP3-2018-516=1
    
    SUSE CaaS Platform ALL:zypper in -t patch SUSE-CAASP-ALL-2018-516=1
    
    To bring your system up-to-date, use 'zypper patch'."
      );
      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:H/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:H/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:"exploited_by_malware", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-curl");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-curl-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-iscsi");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-iscsi-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-rbd");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-rbd-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-ssh");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-ssh-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-debugsource");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-guest-agent");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-guest-agent-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-kvm");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-lang");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-s390");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-s390-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-tools");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-tools-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-x86");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-x86-debuginfo");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/17");
      script_set_attribute(attribute:"patch_publication_date", value:"2018/03/21");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/22");
      script_set_attribute(attribute:"in_the_news", value:"true");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_set_attribute(attribute:"stig_severity", value:"I");
      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:"SuSE Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
    if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
    os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
    os_ver = os_ver[1];
    if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver);
    
    if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);
    
    sp = get_kb_item("Host/SuSE/patchlevel");
    if (isnull(sp)) sp = "0";
    if (os_ver == "SLES12" && (! preg(pattern:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP3", os_ver + " SP" + sp);
    if (os_ver == "SLED12" && (! preg(pattern:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP3", os_ver + " SP" + sp);
    
    
    flag = 0;
    if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"qemu-block-rbd-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"qemu-block-rbd-debuginfo-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"qemu-x86-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"qemu-x86-debuginfo-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", cpu:"s390x", reference:"qemu-s390-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", cpu:"s390x", reference:"qemu-s390-debuginfo-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-block-curl-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-block-curl-debuginfo-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-block-iscsi-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-block-iscsi-debuginfo-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-block-ssh-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-block-ssh-debuginfo-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-debugsource-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-guest-agent-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-guest-agent-debuginfo-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-lang-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-tools-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-tools-debuginfo-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"3", reference:"qemu-kvm-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"qemu-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"qemu-block-curl-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"qemu-block-curl-debuginfo-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"qemu-debugsource-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"qemu-kvm-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"qemu-tools-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"qemu-tools-debuginfo-2.9.1-6.12.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"qemu-x86-2.9.1-6.12.1")) 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");
    }
    
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2018-291.NASL
    descriptionThis update for qemu fixes the following issues : This update has the next round of Spectre v2 related patches, which now integrate with corresponding changes in libvirt. (CVE-2017-5715 bsc#1068032) The January 2018 release of qemu initially addressed the Spectre v2 vulnerability for KVM guests by exposing the spec-ctrl feature for all x86 vcpu types, which was the quick and dirty approach, but not the proper solution. We replaced our initial patch by the patches from upstream. This update defines spec_ctrl and ibpb cpu feature flags as well as new cpu models which are clones of existing models with either -IBRS or -IBPB added to the end of the model name. These new vcpu models explicitly include the new feature(s), whereas the feature flags can be added to the cpu parameter as with other features. In short, for continued Spectre v2 protection, ensure that either the appropriate cpu feature flag is added to the QEMU command-line, or one of the new cpu models is used. Although migration from older versions is supported, the new cpu features won
    last seen2020-06-05
    modified2018-03-23
    plugin id108576
    published2018-03-23
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/108576
    titleopenSUSE Security Update : qemu (openSUSE-2018-291) (Spectre)
  • 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-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)

Redhat

advisories
  • rhsa
    idRHSA-2018:1104
  • rhsa
    idRHSA-2018:1113
rpms
  • 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