Ubuntu 14.04 LTS : QEMU vulnerabilities (USN-2439-1)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-2439-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(80026);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id("CVE-2014-7840", "CVE-2014-8106");
  script_bugtraq_id(71477);
  script_xref(name:"USN", value:"2439-1");

  script_name(english:"Ubuntu 14.04 LTS : QEMU vulnerabilities (USN-2439-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"Michael S. Tsirkin discovered that QEMU incorrectly handled certain
parameters during ram load while performing a migration. An attacker
able to manipulate savevm data could use this issue to possibly
execute arbitrary code on the host. This issue only affected Ubuntu
12.04 LTS, Ubuntu 14.04 LTS, and Ubuntu 14.10. (CVE-2014-7840)

Paolo Bonzini discovered that QEMU incorrectly handled memory in the
Cirrus VGA device. A malicious guest could possibly use this issue to
write into memory of the host, leading to privilege escalation.
(CVE-2014-8106).

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://ubuntu.com/security/notices/USN-2439-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-7840");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/12/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/12/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/12/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-kvm");
  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-common");
  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-sparc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-user");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-user-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-guest-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-keymaps");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2014-2020 Canonical, Inc. / NASL script (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('14.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '14.04', 'pkgname': 'qemu', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-common', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-guest-agent', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-keymaps', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-kvm', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-system', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-system-aarch64', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-system-arm', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-system-common', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-system-mips', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-system-misc', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-system-ppc', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-system-sparc', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-system-x86', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-user', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-user-static', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'},
    {'osver': '14.04', 'pkgname': 'qemu-utils', 'pkgver': '2.0.0+dfsg-2ubuntu1.9'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'qemu / qemu-common / qemu-guest-agent / qemu-keymaps / qemu-kvm / etc');
}