Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 / 9.10 : dpkg vulnerability (USN-909-1)

2010-03-11T00:00:00
ID UBUNTU_USN-909-1.NASL
Type nessus
Reporter Tenable
Modified 2016-05-27T00:00:00

Description

William Grant discovered that dpkg-source did not safely apply diffs when unpacking source packages. If a user or an automated system were tricked into unpacking a specially crafted source package, a remote attacker could modify files outside the target unpack directory, leading to a denial of service or potentially gaining access to the system.

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-909-1. 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(45038);
  script_version("$Revision: 1.9 $");
  script_cvs_date("$Date: 2016/05/27 14:45:43 $");

  script_cve_id("CVE-2010-0396");
  script_osvdb_id(62856);
  script_xref(name:"USN", value:"909-1");

  script_name(english:"Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 / 9.10 : dpkg vulnerability (USN-909-1)");
  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:
"William Grant discovered that dpkg-source did not safely apply diffs
when unpacking source packages. If a user or an automated system were
tricked into unpacking a specially crafted source package, a remote
attacker could modify files outside the target unpack directory,
leading to a denial of service or potentially gaining access to the
system.

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 dpkg, dpkg-dev and / or dselect packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:dpkg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:dpkg-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:dselect");
  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:8.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:9.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:9.10");

  script_set_attribute(attribute:"patch_publication_date", value:"2010/03/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/03/11");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2010-2016 Canonical, Inc. / NASL script (C) 2010-2016 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:"^(6\.06|8\.04|8\.10|9\.04|9\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 8.04 / 8.10 / 9.04 / 9.10", "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:"dpkg", pkgver:"1.13.11ubuntu7.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"dpkg-dev", pkgver:"1.13.11ubuntu7.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"dselect", pkgver:"1.13.11ubuntu7.1")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"dpkg", pkgver:"1.14.16.6ubuntu4.1")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"dpkg-dev", pkgver:"1.14.16.6ubuntu4.1")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"dselect", pkgver:"1.14.16.6ubuntu4.1")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"dpkg", pkgver:"1.14.20ubuntu6.3")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"dpkg-dev", pkgver:"1.14.20ubuntu6.3")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"dselect", pkgver:"1.14.20ubuntu6.3")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"dpkg", pkgver:"1.14.24ubuntu1.1")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"dpkg-dev", pkgver:"1.14.24ubuntu1.1")) flag++;
if (ubuntu_check(osver:"9.04", pkgname:"dselect", pkgver:"1.14.24ubuntu1.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"dpkg", pkgver:"1.15.4ubuntu2.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"dpkg-dev", pkgver:"1.15.4ubuntu2.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"dselect", pkgver:"1.15.4ubuntu2.1")) 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, "dpkg / dpkg-dev / dselect");
}