Vulnerabilities > CVE-2017-13711 - Use After Free vulnerability in multiple products

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2017-1248.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(104423);
  script_version("3.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2017-10911", "CVE-2017-12809", "CVE-2017-13672", "CVE-2017-13711", "CVE-2017-14167", "CVE-2017-15038", "CVE-2017-15268", "CVE-2017-15289");

  script_name(english:"openSUSE Security Update : qemu (openSUSE-2017-1248)");
  script_summary(english:"Check for the openSUSE-2017-1248 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for qemu to version 2.9.1 fixes several issues.

It also announces that the qed storage format will be no longer
supported in Leap 15.0.

These security issues were fixed :

  - CVE-2017-15268: Qemu allowed remote attackers to cause a
    memory leak by triggering slow data-channel read
    operations, related to io/channel-websock.c
    (bsc#1062942)

  - CVE-2017-15289: The mode4and5 write functions allowed
    local OS guest privileged users to cause a denial of
    service (out-of-bounds write access and Qemu process
    crash) via vectors related to dst calculation
    (bsc#1063122)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk
    function local guest OS users to obtain sensitive
    information from host heap memory via vectors related to
    reading extended attributes (bsc#1062069)

  - CVE-2017-10911: The make_response function in the Linux
    kernel allowed guest OS users to obtain sensitive
    information from host OS (or other guest OS) kernel
    memory by leveraging the copying of uninitialized
    padding fields in Xen block-interface response
    structures (bsc#1057378)

  - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator
    support allowed local guest OS privileged users to cause
    a denial of service (NULL pointer dereference and QEMU
    process crash) by flushing an empty CDROM device drive
    (bsc#1054724)

  - CVE-2017-14167: Integer overflow in the load_multiboot
    function allowed local guest OS users to execute
    arbitrary code on the host via crafted multiboot header
    address values, which trigger an out-of-bounds write
    (bsc#1057585)

  - CVE-2017-13672: The VGA display emulator support allowed
    local guest OS privileged users to cause a denial of
    service (out-of-bounds read and QEMU process crash) via
    vectors involving display update (bsc#1056334)

  - CVE-2017-13711: Use-after-free vulnerability allowed
    attackers to cause a denial of service (QEMU instance
    crash) by leveraging failure to properly clear ifq_so
    from pending packets (bsc#1056291).

These non-security issues were fixed :

  - Fixed not being able to build from rpm sources due to
    undefined macro (bsc#1057966)

  - Fiedx package build failure against new glibc
    (bsc#1055587)

This update was imported from the SUSE:SLE-12-SP3:Update update
project."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1054724"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1055587"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1056291"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1056334"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1057378"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1057585"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1057966"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1062069"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1062942"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1063122"
  );
  # https://features.opensuse.org/324200
  script_set_attribute(
    attribute:"see_also",
    value:"https://features.opensuse.org/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected qemu packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-arm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-arm-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-curl-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-dmg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-dmg-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-iscsi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-iscsi-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-rbd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-rbd-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-ssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-block-ssh-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-extra-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-guest-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-guest-agent-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-ipxe");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-ksm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-lang");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-linux-user");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-linux-user-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-linux-user-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-ppc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-ppc-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-s390");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-s390-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-seabios");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-sgabios");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-testsuite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-vgabios");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-x86");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:qemu-x86-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.3");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/11/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/07");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE42\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.3", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE42.3", reference:"qemu-ipxe-1.0.0-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"qemu-linux-user-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"qemu-linux-user-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"qemu-linux-user-debugsource-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"qemu-seabios-1.10.2-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"qemu-sgabios-8-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"qemu-vgabios-1.10.2-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-arm-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-arm-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-curl-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-curl-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-dmg-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-dmg-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-iscsi-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-iscsi-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-rbd-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-rbd-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-ssh-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-block-ssh-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-debugsource-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-extra-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-extra-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-guest-agent-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-guest-agent-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-ksm-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-kvm-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-lang-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-ppc-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-ppc-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-s390-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-s390-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-testsuite-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-tools-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-tools-debuginfo-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-x86-2.9.1-35.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", cpu:"x86_64", reference:"qemu-x86-debuginfo-2.9.1-35.1") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-linux-user / qemu-linux-user-debuginfo / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2018-1034.
#

include("compat.inc");

if (description)
{
  script_id(110457);
  script_version("1.2");
  script_cvs_date("Date: 2019/04/05 23:25:05");

  script_cve_id("CVE-2017-13672", "CVE-2017-13711", "CVE-2017-15124", "CVE-2017-15268", "CVE-2018-3639", "CVE-2018-5683", "CVE-2018-7858");
  script_xref(name:"ALAS", value:"2018-1034");

  script_name(english:"Amazon Linux AMI : qemu-kvm (ALAS-2018-1034) (Spectre)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux AMI host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An out-of-bounds read access issue was found in the VGA display
emulator built into the Quick emulator (QEMU). It could occur while
reading VGA memory to update graphics display. A privileged
user/process inside guest could use this flaw to crash the QEMU
process on the host resulting in denial of service
situation.(CVE-2017-13672)

A memory leakage issue was found in the I/O channels websockets
implementation of the Quick Emulator (QEMU). It could occur while
sending screen updates to a client, which is slow to read and process
them further. A privileged guest user could use this flaw to cause a
denial of service on the host and/or potentially crash the QEMU
process instance on the host.(CVE-2017-15268)

A use-after-free issue was found in the Slirp networking
implementation of the Quick emulator (QEMU). It occurs when a Socket
referenced from multiple packets is freed while responding to a
message. A user/process could use this flaw to crash the QEMU process
on the host resulting in denial of service.(CVE-2017-13711 )

Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA
Emulator support, allows local guest OS privileged users to cause a
denial of service (out-of-bounds access and QEMU process crash) by
leveraging incorrect region calculation when updating VGA
display.(CVE-2018-7858)

VNC server implementation in Quick Emulator (QEMU) was found to be
vulnerable to an unbounded memory allocation issue, as it did not
throttle the framebuffer updates sent to its client. If the client did
not consume these updates, VNC server allocates growing memory to hold
onto this data. A malicious remote VNC client could use this flaw to
cause DoS to the server host.(CVE-2017-15124)

An industry-wide issue was found in the way many modern microprocessor
designs have implemented speculative execution of Load & Store
instructions (a commonly used performance optimization). It relies on
the presence of a precisely-defined instruction sequence in the
privileged code as well as the fact that memory read from address to
which a recent memory write has occurred may see an older value and
subsequently cause an update into the microprocessor's data cache even
for speculatively executed instructions that never actually commit
(retire). As a result, an unprivileged attacker could use this flaw to
read privileged memory by conducting targeted cache side-channel
attacks.(CVE-2018-3639)

An out-of-bounds read access issue was found in the VGA emulator of
QEMU. It could occur in vga_draw_text routine, while updating display
area for a vnc client. A privileged user inside a guest could use this
flaw to crash the QEMU process resulting in DoS.(CVE-2018-5683)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2018-1034.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update qemu-kvm' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-img");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-kvm-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-kvm-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:qemu-kvm-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/06/08");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/06/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (rpm_check(release:"ALA", cpu:"x86_64", reference:"qemu-img-1.5.3-156.8.amzn1")) flag++;
if (rpm_check(release:"ALA", cpu:"x86_64", reference:"qemu-kvm-1.5.3-156.8.amzn1")) flag++;
if (rpm_check(release:"ALA", cpu:"x86_64", reference:"qemu-kvm-common-1.5.3-156.8.amzn1")) flag++;
if (rpm_check(release:"ALA", cpu:"x86_64", reference:"qemu-kvm-debuginfo-1.5.3-156.8.amzn1")) flag++;
if (rpm_check(release:"ALA", cpu:"x86_64", reference:"qemu-kvm-tools-1.5.3-156.8.amzn1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-img / qemu-kvm / qemu-kvm-common / qemu-kvm-debuginfo / etc");
}

#
# (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");
  }
}

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(110865);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/04");

  script_cve_id(
    "CVE-2017-13672",
    "CVE-2017-13711",
    "CVE-2017-15124",
    "CVE-2017-15268",
    "CVE-2018-3639",
    "CVE-2018-5683",
    "CVE-2018-7858"
  );

  script_name(english:"EulerOS 2.0 SP3 : qemu-kvm (EulerOS-SA-2018-1201)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the qemu-kvm packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - QEMU (aka Quick Emulator), when built with the VGA
    display emulator support, allows local guest OS
    privileged users to cause a denial of service
    (out-of-bounds read and QEMU process crash) via vectors
    involving display update.(CVE-2017-13672)

  - Use-after-free vulnerability in the sofree function in
    slirp/socket.c in QEMU (aka Quick Emulator) allows
    attackers to cause a denial of service (QEMU instance
    crash) by leveraging failure to properly clear ifq_so
    from pending packets.(CVE-2017-13711)

  - VNC server implementation in Quick Emulator (QEMU)
    2.11.0 and older was found to be vulnerable to an
    unbounded memory allocation issue, as it did not
    throttle the framebuffer updates sent to its client. If
    the client did not consume these updates, VNC server
    allocates growing memory to hold onto this data. A
    malicious remote VNC client could use this flaw to
    cause DoS to the server host.(CVE-2017-15124)

  - Qemu through 2.10.0 allows remote attackers to cause a
    memory leak by triggering slow data-channel read
    operations, related to
    io/channel-websock.c.(CVE-2017-15268)

  - The vga_draw_text function in Qemu allows local OS
    guest privileged users to cause a denial of service
    (out-of-bounds read and QEMU process crash) by
    leveraging improper memory address
    validation.(CVE-2018-5683)

  - An industry-wide issue was found in the way many modern
    microprocessor designs have implemented speculative
    execution of Load i1/4+ Store instructions (a commonly
    used performance optimization). It relies on the
    presence of a precisely-defined instruction sequence in
    the privileged code as well as the fact that memory
    read from address to which a recent memory write has
    occurred may see an older value and subsequently cause
    an update into the microprocessor's data cache even for
    speculatively executed instructions that never actually
    commit (retire). As a result, an unprivileged attacker
    could use this flaw to read privileged memory by
    conducting targeted cache side-channel attacks.
    (CVE-2018-3639)

  - Quick Emulator (aka QEMU), when built with the Cirrus
    CLGD 54xx VGA Emulator support, allows local guest OS
    privileged users to cause a denial of service
    (out-of-bounds access and QEMU process crash) by
    leveraging incorrect region calculation when updating
    VGA display.(CVE-2018-7858)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2018-1201
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9f82cacb");
  script_set_attribute(attribute:"solution", value:
"Update the affected qemu-kvm packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/06/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:qemu-img");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:qemu-kvm-common");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(3)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["qemu-img-1.5.3-156.2.h2",
        "qemu-kvm-1.5.3-156.2.h2",
        "qemu-kvm-common-1.5.3-156.2.h2"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"3", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-kvm");
}