Ubuntu 6.06 LTS / 6.10 / 7.04 / 7.10 : libxfont, xorg-server vulnerabilities (USN-571-1)

2008-01-18T00:00:00
ID UBUNTU_USN-571-1.NASL
Type nessus
Reporter Tenable
Modified 2018-08-06T00:00:00

Description

Multiple overflows were discovered in the XFree86-Misc, XInput-Misc, TOG-CUP, EVI, and MIT-SHM extensions which did not correctly validate function arguments. An authenticated attacker could send specially crafted requests and gain root privileges. (CVE-2007-5760, CVE-2007-6427, CVE-2007-6428, CVE-2007-6429)

It was discovered that the X.org server did not use user privileges when attempting to open security policy files. Local attackers could exploit this to probe for files in directories they would not normally be able to access. (CVE-2007-5958)

It was discovered that the PCF font handling code did not correctly validate the size of fonts. An authenticated attacker could load a specially crafted font and gain additional privileges. (CVE-2008-0006).

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-571-1. 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(30019);
  script_version("1.15");
  script_cvs_date("Date: 2018/08/06 14:03:15");

  script_cve_id("CVE-2007-5760", "CVE-2007-5958", "CVE-2007-6427", "CVE-2007-6428", "CVE-2007-6429", "CVE-2008-0006");
  script_xref(name:"USN", value:"571-1");

  script_name(english:"Ubuntu 6.06 LTS / 6.10 / 7.04 / 7.10 : libxfont, xorg-server vulnerabilities (USN-571-1)");
  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:
"Multiple overflows were discovered in the XFree86-Misc, XInput-Misc,
TOG-CUP, EVI, and MIT-SHM extensions which did not correctly validate
function arguments. An authenticated attacker could send specially
crafted requests and gain root privileges. (CVE-2007-5760,
CVE-2007-6427, CVE-2007-6428, CVE-2007-6429)

It was discovered that the X.org server did not use user privileges
when attempting to open security policy files. Local attackers could
exploit this to probe for files in directories they would not normally
be able to access. (CVE-2007-5958)

It was discovered that the PCF font handling code did not correctly
validate the size of fonts. An authenticated attacker could load a
specially crafted font and gain additional privileges. (CVE-2008-0006).

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:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_cwe_id(119, 189, 200, 362, 399);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxfont-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxfont1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxfont1-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xdmx");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xdmx-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xnest");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xprint");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xprint-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xephyr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xvfb");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.06:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:7.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:7.10");

  script_set_attribute(attribute:"patch_publication_date", value:"2008/01/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2008/01/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2008-2018 Canonical, Inc. / NASL script (C) 2008-2017 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:"^(6\.06|6\.10|7\.04|7\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 6.10 / 7.04 / 7.10", "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:"6.06", pkgname:"libxfont-dev", pkgver:"1.0.0-0ubuntu3.4")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libxfont1", pkgver:"1:1.0.0-0ubuntu3.4")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libxfont1-dbg", pkgver:"1.0.0-0ubuntu3.4")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"xdmx", pkgver:"1.0.2-0ubuntu10.8")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"xdmx-tools", pkgver:"1.0.2-0ubuntu10.8")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"xnest", pkgver:"1.0.2-0ubuntu10.8")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"xserver-xorg-core", pkgver:"1:1.0.2-0ubuntu10.8")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"xserver-xorg-dev", pkgver:"1.0.2-0ubuntu10.8")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"xvfb", pkgver:"1.0.2-0ubuntu10.8")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libxfont-dev", pkgver:"1.2.0-0ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libxfont1", pkgver:"1:1.2.0-0ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libxfont1-dbg", pkgver:"1.2.0-0ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"xdmx", pkgver:"1.1.1-0ubuntu12.3")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"xdmx-tools", pkgver:"1.1.1-0ubuntu12.3")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"xnest", pkgver:"1.1.1-0ubuntu12.3")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"xserver-xephyr", pkgver:"1.1.1-0ubuntu12.3")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"xserver-xorg-core", pkgver:"1:1.1.1-0ubuntu12.3")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"xserver-xorg-dev", pkgver:"1.1.1-0ubuntu12.3")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"xvfb", pkgver:"1.1.1-0ubuntu12.3")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"libxfont-dev", pkgver:"1.2.7-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"libxfont1", pkgver:"1:1.2.7-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"libxfont1-dbg", pkgver:"1.2.7-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"xdmx", pkgver:"1.2.0-3ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"xdmx-tools", pkgver:"1.2.0-3ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"xnest", pkgver:"1.2.0-3ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"xserver-xephyr", pkgver:"1.2.0-3ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"xserver-xorg-core", pkgver:"2:1.2.0-3ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"xserver-xorg-dev", pkgver:"1.2.0-3ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"xvfb", pkgver:"1.2.0-3ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libxfont-dev", pkgver:"1.3.0-0ubuntu1.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libxfont1", pkgver:"1:1.3.0-0ubuntu1.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libxfont1-dbg", pkgver:"1.3.0-0ubuntu1.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"xdmx", pkgver:"1.3.0.0.dfsg-12ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"xdmx-tools", pkgver:"1.3.0.0.dfsg-12ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"xnest", pkgver:"1.3.0.0.dfsg-12ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"xprint", pkgver:"1.3.0.0.dfsg-12ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"xprint-common", pkgver:"1.3.0.0.dfsg-12ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"xserver-xephyr", pkgver:"1.3.0.0.dfsg-12ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"xserver-xorg-core", pkgver:"2:1.3.0.0.dfsg-12ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"xserver-xorg-core-dbg", pkgver:"1.3.0.0.dfsg-12ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"xserver-xorg-dev", pkgver:"1.3.0.0.dfsg-12ubuntu8.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"xvfb", pkgver:"1.3.0.0.dfsg-12ubuntu8.1")) 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, "libxfont-dev / libxfont1 / libxfont1-dbg / xdmx / xdmx-tools / etc");
}