Ubuntu 5.04 / 5.10 : gdm vulnerabilitiy (USN-278-1)

2006-05-13T00:00:00
ID UBUNTU_USN-278-1.NASL
Type nessus
Reporter Tenable
Modified 2016-05-26T00:00:00

Description

Marcus Meissner discovered a race condition in gdm's handling of the ~/.ICEauthority file permissions. A local attacker could exploit this to become the owner of an arbitrary file in the system. When getting control over automatically executed scripts (like cron jobs), the attacker could eventually leverage this flaw to execute arbitrary commands with root privileges.

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-278-1. 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(21372);
  script_version("$Revision: 1.10 $");
  script_cvs_date("$Date: 2016/05/26 16:22:51 $");

  script_cve_id("CVE-2006-1057");
  script_xref(name:"USN", value:"278-1");

  script_name(english:"Ubuntu 5.04 / 5.10 : gdm vulnerabilitiy (USN-278-1)");
  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:
"Marcus Meissner discovered a race condition in gdm's handling of the
~/.ICEauthority file permissions. A local attacker could exploit this
to become the owner of an arbitrary file in the system. When getting
control over automatically executed scripts (like cron jobs), the
attacker could eventually leverage this flaw to execute arbitrary
commands with root privileges.

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 gdm package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gdm");
  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:"patch_publication_date", value:"2006/05/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/05/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2006-2016 Canonical, Inc. / NASL script (C) 2006-2016 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)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 5.04 / 5.10", "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:"5.04", pkgname:"gdm", pkgver:"2.6.0.7-0ubuntu7.1")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"gdm", pkgver:"2.8.0.5-0ubuntu1.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_NOTE,
    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, "gdm");
}