Ubuntu 12.04 LTS / 12.10 / 13.10 : cups-filters vulnerabilities (USN-2143-1)

#%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-2143-1. 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(72978);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2013-6473", "CVE-2013-6474", "CVE-2013-6475", "CVE-2013-6476");
  script_bugtraq_id(66161);
  script_xref(name:"USN", value:"2143-1");

  script_name(english:"Ubuntu 12.04 LTS / 12.10 / 13.10 : cups-filters vulnerabilities (USN-2143-1)");
  script_summary(english:"Checks dpkg output for updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Ubuntu host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Florian Weimer discovered that cups-filters incorrectly handled memory
in the urftopdf filter. An attacker could possibly use this issue to
execute arbitrary code with the privileges of the lp user. This issue
only affected Ubuntu 13.10. (CVE-2013-6473)

Florian Weimer discovered that cups-filters incorrectly handled memory
in the pdftoopvp filter. An attacker could possibly use this issue to
execute arbitrary code with the privileges of the lp user.
(CVE-2013-6474, CVE-2013-6475)

Florian Weimer discovered that cups-filters did not restrict driver
directories in in the pdftoopvp filter. An attacker could possibly use
this issue to execute arbitrary code with the privileges of the lp
user. (CVE-2013-6476).

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/2143-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected cups-filters package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:ND/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:cups-filters");
  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:"cpe", value:"cpe:/o:canonical:ubuntu_linux:13.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/03/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/03/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/03/13");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  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_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|13\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 12.04 / 12.10 / 13.10", "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:"cups-filters", pkgver:"1.0.18-0ubuntu0.2")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"cups-filters", pkgver:"1.0.24-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"13.10", pkgname:"cups-filters", pkgver:"1.0.40-0ubuntu1.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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, "cups-filters");
}