Ubuntu 6.06 LTS / 7.10 / 8.04 LTS / 8.10 : libxml2 vulnerabilities (USN-673-1)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-673-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(36916);
  script_version("1.16");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2008-4225", "CVE-2008-4226");
  script_xref(name:"USN", value:"673-1");

  script_name(english:"Ubuntu 6.06 LTS / 7.10 / 8.04 LTS / 8.10 : libxml2 vulnerabilities (USN-673-1)");
  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:
"Drew Yao discovered that libxml2 did not correctly handle certain
corrupt XML documents. If a user or automated system were tricked into
processing a malicious XML document, a remote attacker could cause
applications linked against libxml2 to enter an infinite loop, leading
to a denial of service. (CVE-2008-4225)

Drew Yao discovered that libxml2 did not correctly handle large memory
allocations. If a user or automated system were tricked into
processing a very large XML document, a remote attacker could cause
applications linked against libxml2 to crash, leading to a denial of
service. (CVE-2008-4226).

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/673-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_cwe_id(189, 399);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxml2-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxml2-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxml2-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxml2-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-libxml2-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python2.4-libxml2");
  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:7.10");
  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:"patch_publication_date", value:"2008/11/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2018 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 (! ereg(pattern:"^(6\.06|7\.10|8\.04|8\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 7.10 / 8.04 / 8.10", "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:"libxml2", pkgver:"2.6.24.dfsg-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libxml2-dbg", pkgver:"2.6.24.dfsg-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libxml2-dev", pkgver:"2.6.24.dfsg-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libxml2-doc", pkgver:"2.6.24.dfsg-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libxml2-utils", pkgver:"2.6.24.dfsg-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"python-libxml2", pkgver:"2.6.24.dfsg-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"python2.4-libxml2", pkgver:"2.6.24.dfsg-1ubuntu1.4")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libxml2", pkgver:"2.6.30.dfsg-2ubuntu1.4")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libxml2-dbg", pkgver:"2.6.30.dfsg-2ubuntu1.4")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libxml2-dev", pkgver:"2.6.30.dfsg-2ubuntu1.4")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libxml2-doc", pkgver:"2.6.30.dfsg-2ubuntu1.4")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libxml2-utils", pkgver:"2.6.30.dfsg-2ubuntu1.4")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"python-libxml2", pkgver:"2.6.30.dfsg-2ubuntu1.4")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"python-libxml2-dbg", pkgver:"2.6.30.dfsg-2ubuntu1.4")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libxml2", pkgver:"2.6.31.dfsg-2ubuntu1.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libxml2-dbg", pkgver:"2.6.31.dfsg-2ubuntu1.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libxml2-dev", pkgver:"2.6.31.dfsg-2ubuntu1.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libxml2-doc", pkgver:"2.6.31.dfsg-2ubuntu1.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libxml2-utils", pkgver:"2.6.31.dfsg-2ubuntu1.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"python-libxml2", pkgver:"2.6.31.dfsg-2ubuntu1.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"python-libxml2-dbg", pkgver:"2.6.31.dfsg-2ubuntu1.3")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libxml2", pkgver:"2.6.32.dfsg-4ubuntu1.1")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libxml2-dbg", pkgver:"2.6.32.dfsg-4ubuntu1.1")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libxml2-dev", pkgver:"2.6.32.dfsg-4ubuntu1.1")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libxml2-doc", pkgver:"2.6.32.dfsg-4ubuntu1.1")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libxml2-utils", pkgver:"2.6.32.dfsg-4ubuntu1.1")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"python-libxml2", pkgver:"2.6.32.dfsg-4ubuntu1.1")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"python-libxml2-dbg", pkgver:"2.6.32.dfsg-4ubuntu1.1")) 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, "libxml2 / libxml2-dbg / libxml2-dev / libxml2-doc / libxml2-utils / etc");
}