Ubuntu 12.04 LTS / 12.10 : libvirt vulnerabilities (USN-1708-1)

2013-01-30T00:00:00
ID UBUNTU_USN-1708-1.NASL
Type nessus
Reporter Tenable
Modified 2016-05-25T00:00:00

Description

Wenlong Huang discovered that libvirt incorrectly handled certain RPC calls. A remote attacker could exploit this and cause libvirt to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS. (CVE-2012-4423)

Tingting Zheng discovered that libvirt incorrectly handled cleanup under certain error conditions. A remote attacker could exploit this and cause libvirt to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2013-0170).

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-1708-1. 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(64289);
  script_version("$Revision: 1.7 $");
  script_cvs_date("$Date: 2016/05/25 16:27:04 $");

  script_cve_id("CVE-2012-4423", "CVE-2013-0170");
  script_bugtraq_id(55541, 57578);
  script_osvdb_id(86205, 89644);
  script_xref(name:"USN", value:"1708-1");

  script_name(english:"Ubuntu 12.04 LTS / 12.10 : libvirt vulnerabilities (USN-1708-1)");
  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:
"Wenlong Huang discovered that libvirt incorrectly handled certain RPC
calls. A remote attacker could exploit this and cause libvirt to
crash, resulting in a denial of service. This issue only affected
Ubuntu 12.04 LTS. (CVE-2012-4423)

Tingting Zheng discovered that libvirt incorrectly handled cleanup
under certain error conditions. A remote attacker could exploit this
and cause libvirt to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2013-0170).

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 libvirt-bin and / or libvirt0 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:ND/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-bin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt0");
  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:"patch_publication_date", value:"2013/01/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/30");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2013-2016 Canonical, Inc. / NASL script (C) 2013-2016 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:"^(12\.04|12\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 12.04 / 12.10", "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:"12.04", pkgname:"libvirt-bin", pkgver:"0.9.8-2ubuntu17.7")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"libvirt0", pkgver:"0.9.8-2ubuntu17.7")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libvirt-bin", pkgver:"0.9.13-0ubuntu12.2")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libvirt0", pkgver:"0.9.13-0ubuntu12.2")) 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, "libvirt-bin / libvirt0");
}