Ubuntu 14.04 LTS / 16.04 LTS : GDK-PixBuf vulnerabilities (USN-3418-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3418-1. 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(103320);
  script_version("3.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id("CVE-2017-2862", "CVE-2017-2870", "CVE-2017-6311");
  script_xref(name:"USN", value:"3418-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS : GDK-PixBuf vulnerabilities (USN-3418-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"It was discovered that the GDK-PixBuf library did not properly handle
certain jpeg images. If an user or automated system were tricked into
opening a specially crafted jpeg file, a remote attacker could use
this flaw to cause GDK-PixBuf to crash, resulting in a denial of
service, or possibly execute arbitrary code. (CVE-2017-2862)

It was discovered that the GDK-PixBuf library did not properly handle
certain tiff images. If an user or automated system were tricked into
opening a specially crafted tiff file, a remote attacker could use
this flaw to cause GDK-PixBuf to crash, resulting in a denial of
service, or possibly execute arbitrary code. (CVE-2017-2870)

Ariel Zelivansky discovered that the GDK-PixBuf library did not
properly handle printing certain error messages. If an user or
automated system were tricked into opening a specially crafted image
file, a remote attacker could use this flaw to cause GDK-PixBuf to
crash, resulting in a denial of service. (CVE-2017-6311).

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-3418-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  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:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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:"cvss_score_source", value:"CVE-2017-2870");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/03/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/09/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/09/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgdk-pixbuf2.0-0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgdk-pixbuf2.0-0-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgdk-pixbuf2.0-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgdk-pixbuf2.0-dev");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gir1.2-gdkpixbuf-2.0");
  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) 2017-2023 Canonical, Inc. / NASL script (C) 2017-2023 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 || '16.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 16.04', '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': 'gir1.2-gdkpixbuf-2.0', 'pkgver': '2.30.7-0ubuntu1.7'},
    {'osver': '14.04', 'pkgname': 'libgdk-pixbuf2.0-0', 'pkgver': '2.30.7-0ubuntu1.7'},
    {'osver': '14.04', 'pkgname': 'libgdk-pixbuf2.0-0-udeb', 'pkgver': '2.30.7-0ubuntu1.7'},
    {'osver': '14.04', 'pkgname': 'libgdk-pixbuf2.0-common', 'pkgver': '2.30.7-0ubuntu1.7'},
    {'osver': '14.04', 'pkgname': 'libgdk-pixbuf2.0-dev', 'pkgver': '2.30.7-0ubuntu1.7'},
    {'osver': '16.04', 'pkgname': 'gir1.2-gdkpixbuf-2.0', 'pkgver': '2.32.2-1ubuntu1.3'},
    {'osver': '16.04', 'pkgname': 'libgdk-pixbuf2.0-0', 'pkgver': '2.32.2-1ubuntu1.3'},
    {'osver': '16.04', 'pkgname': 'libgdk-pixbuf2.0-0-udeb', 'pkgver': '2.32.2-1ubuntu1.3'},
    {'osver': '16.04', 'pkgname': 'libgdk-pixbuf2.0-common', 'pkgver': '2.32.2-1ubuntu1.3'},
    {'osver': '16.04', 'pkgname': 'libgdk-pixbuf2.0-dev', 'pkgver': '2.32.2-1ubuntu1.3'}
];

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_WARNING,
    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, 'gir1.2-gdkpixbuf-2.0 / libgdk-pixbuf2.0-0 / libgdk-pixbuf2.0-0-udeb / etc');
}