Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.04 : eglibc vulnerabilities (USN-1991-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1991-1. 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(70538);
  script_version("1.6");
  script_cvs_date("Date: 2019/09/19 12:54:29");

  script_cve_id("CVE-2012-4412", "CVE-2012-4424", "CVE-2013-0242", "CVE-2013-1914", "CVE-2013-4237", "CVE-2013-4332");
  script_bugtraq_id(55462, 55543, 57638, 58839, 61729, 62324);
  script_xref(name:"USN", value:"1991-1");

  script_name(english:"Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.04 : eglibc vulnerabilities (USN-1991-1)");
  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:
"It was discovered that the GNU C Library incorrectly handled the
strcoll() function. An attacker could use this issue to cause a denial
of service, or possibly execute arbitrary code. (CVE-2012-4412,
CVE-2012-4424)

It was discovered that the GNU C Library incorrectly handled multibyte
characters in the regular expression matcher. An attacker could use
this issue to cause a denial of service. (CVE-2013-0242)

It was discovered that the GNU C Library incorrectly handled large
numbers of domain conversion results in the getaddrinfo() function. An
attacker could use this issue to cause a denial of service.
(CVE-2013-1914)

It was discovered that the GNU C Library readdir_r() function
incorrectly handled crafted NTFS or CIFS images. An attacker could use
this issue to cause a denial of service, or possibly execute arbitrary
code. (CVE-2013-4237)

It was discovered that the GNU C Library incorrectly handled memory
allocation. An attacker could use this issue to cause a denial of
service. (CVE-2013-4332).

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/1991-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected libc6 package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/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:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libc6");
  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:13.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/02/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/10/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/10/22");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2013-2019 Canonical, Inc. / NASL script (C) 2013-2019 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\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 10.04 / 12.04 / 12.10 / 13.04", "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:"libc6", pkgver:"2.11.1-0ubuntu7.13")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"libc6", pkgver:"2.15-0ubuntu10.5")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libc6", pkgver:"2.15-0ubuntu20.2")) flag++;
if (ubuntu_check(osver:"13.04", pkgname:"libc6", pkgver:"2.17-0ubuntu5.1")) 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, "libc6");
}