Ubuntu 5.04 / 5.10 / 6.06 LTS : libgd2 vulnerability (USN-298-1)

2007-11-10T00:00:00
ID UBUNTU_USN-298-1.NASL
Type nessus
Reporter Tenable
Modified 2016-05-26T00:00:00

Description

Xavier Roche discovered that libgd's function for reading GIF image data did not sufficiently verify its validity. Specially crafted GIF images could cause an infinite loop which used up all available CPU resources. Since libgd is often used in PHP and Perl web applications, this could lead to a remote Denial of Service vulnerability.

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.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-298-1. 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(27873);
  script_version("$Revision: 1.11 $");
  script_cvs_date("$Date: 2016/05/26 16:22:51 $");

  script_cve_id("CVE-2006-2906");
  script_osvdb_id(26260);
  script_xref(name:"USN", value:"298-1");

  script_name(english:"Ubuntu 5.04 / 5.10 / 6.06 LTS : libgd2 vulnerability (USN-298-1)");
  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:
"Xavier Roche discovered that libgd's function for reading GIF image
data did not sufficiently verify its validity. Specially crafted GIF
images could cause an infinite loop which used up all available CPU
resources. Since libgd is often used in PHP and Perl web applications,
this could lead to a remote Denial of Service vulnerability.

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:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd2-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd2-noxpm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd2-noxpm-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd2-xpm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgd2-xpm-dev");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.06:-:lts");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/06/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/11/10");
  script_set_attribute(attribute:"vuln_publication_date", value:"2006/06/06");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2006-2016 Canonical, Inc. / NASL script (C) 2007-2016 Tenable Network Security, Inc.");
  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 (! ereg(pattern:"^(5\.04|5\.10|6\.06)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 5.04 / 5.10 / 6.06", "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:"5.04", pkgname:"libgd-tools", pkgver:"2.0.33-1.1ubuntu1.5.04")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libgd2", pkgver:"2.0.33-1.1ubuntu1.5.04")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libgd2-dev", pkgver:"2.0.33-1.1ubuntu1.5.04")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libgd2-noxpm", pkgver:"2.0.33-1.1ubuntu1.5.04")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libgd2-noxpm-dev", pkgver:"2.0.33-1.1ubuntu1.5.04")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libgd2-xpm", pkgver:"2.0.33-1.1ubuntu1.5.04")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libgd2-xpm-dev", pkgver:"2.0.33-1.1ubuntu1.5.04")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libgd-tools", pkgver:"2.0.33-1.1ubuntu1.5.10")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libgd2", pkgver:"2.0.33-1.1ubuntu1.5.10")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libgd2-dev", pkgver:"2.0.33-1.1ubuntu1.5.10")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libgd2-noxpm", pkgver:"2.0.33-1.1ubuntu1.5.10")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libgd2-noxpm-dev", pkgver:"2.0.33-1.1ubuntu1.5.10")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libgd2-xpm", pkgver:"2.0.33-1.1ubuntu1.5.10")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libgd2-xpm-dev", pkgver:"2.0.33-1.1ubuntu1.5.10")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libgd-tools", pkgver:"2.0.33-2ubuntu5.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libgd2", pkgver:"2.0.33-2ubuntu5.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libgd2-dev", pkgver:"2.0.33-2ubuntu5.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libgd2-noxpm", pkgver:"2.0.33-2ubuntu5.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libgd2-noxpm-dev", pkgver:"2.0.33-2ubuntu5.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libgd2-xpm", pkgver:"2.0.33-2ubuntu5.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libgd2-xpm-dev", pkgver:"2.0.33-2ubuntu5.1")) 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, "libgd-tools / libgd2 / libgd2-dev / libgd2-noxpm / libgd2-noxpm-dev / etc");
}