Ubuntu 12.04 LTS / 12.10 : libav vulnerabilities (USN-1630-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1630-1. 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(62900);
  script_version("1.9");
  script_cvs_date("Date: 2019/09/19 12:54:28");

  script_cve_id("CVE-2012-2772", "CVE-2012-2775", "CVE-2012-2776", "CVE-2012-2777", "CVE-2012-2779", "CVE-2012-2784", "CVE-2012-2786", "CVE-2012-2787", "CVE-2012-2788", "CVE-2012-2789", "CVE-2012-2790", "CVE-2012-2793", "CVE-2012-2794", "CVE-2012-2796", "CVE-2012-2798", "CVE-2012-2800", "CVE-2012-2801", "CVE-2012-2802");
  script_bugtraq_id(55355);
  script_xref(name:"USN", value:"1630-1");

  script_name(english:"Ubuntu 12.04 LTS / 12.10 : libav vulnerabilities (USN-1630-1)");
  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 Libav incorrectly handled certain malformed
media files. If a user were tricked into opening a crafted media file,
an attacker could cause a denial of service via application crash, or
possibly execute arbitrary code with the privileges of the user
invoking the program.

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/1630-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected libavcodec53 and / or libavformat53 packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavcodec53");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavformat53");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/09/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/11/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/11/13");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 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:"^(12\.04|12\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 12.04 / 12.10", "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:"12.04", pkgname:"libavcodec53", pkgver:"4:0.8.4-0ubuntu0.12.04.1")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"libavformat53", pkgver:"4:0.8.4-0ubuntu0.12.04.1")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libavcodec53", pkgver:"6:0.8.4-0ubuntu0.12.10.1")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libavformat53", pkgver:"6:0.8.4-0ubuntu0.12.10.1")) 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, "libavcodec53 / libavformat53");
}