Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.10 / 14.04 LTS : dpkg vulnerability (USN-2183-2)

2014-05-02T00:00:00
ID UBUNTU_USN-2183-2.NASL
Type nessus
Reporter Ubuntu Security Notice (C) 2014-2019 Canonical, Inc. / NASL script (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-04-02T00:00:00

Description

USN-2183-1 fixed a vulnerability in dpkg. Javier Serrano Polo discovered that the fix introduced a vulnerability in releases with an older version of the patch utility. This update fixes the problem.

Jakub Wilk discovered that dpkg incorrectly certain paths and symlinks 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-2183-2. 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(73820);
  script_version("1.5");
  script_cvs_date("Date: 2019/09/19 12:54:30");

  script_cve_id("CVE-2014-0471");
  script_xref(name:"USN", value:"2183-2");

  script_name(english:"Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.10 / 14.04 LTS : dpkg vulnerability (USN-2183-2)");
  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:
"USN-2183-1 fixed a vulnerability in dpkg. Javier Serrano Polo
discovered that the fix introduced a vulnerability in releases with an
older version of the patch utility. This update fixes the problem.

Jakub Wilk discovered that dpkg incorrectly certain paths and symlinks
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:"see_also",
    value:"https://usn.ubuntu.com/2183-2/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected dpkg-dev and / or libdpkg-perl packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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:libdpkg-perl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:13.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/04/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/05/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/05/02");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2014-2019 Canonical, Inc. / NASL script (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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 (! preg(pattern:"^(10\.04|12\.04|12\.10|13\.10|14\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 10.04 / 12.04 / 12.10 / 13.10 / 14.04", "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:"10.04", pkgname:"dpkg-dev", pkgver:"1.15.5.6ubuntu4.8")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"libdpkg-perl", pkgver:"1.16.1.2ubuntu7.4")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libdpkg-perl", pkgver:"1.16.7ubuntu6.2")) flag++;
if (ubuntu_check(osver:"13.10", pkgname:"libdpkg-perl", pkgver:"1.16.12ubuntu1.2")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"libdpkg-perl", pkgver:"1.17.5ubuntu5.2")) 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-dev / libdpkg-perl");
}