GLSA-200903-19 : Xerces-C++: Denial of Service

2009-03-10T00:00:00
ID GENTOO_GLSA-200903-19.NASL
Type nessus
Reporter Tenable
Modified 2018-08-10T00:00:00

Description

The remote host is affected by the vulnerability described in GLSA-200903-19 (Xerces-C++: Denial of Service)

Frank Rast reported that the XML parser in Xerces-C++ does not     correctly handle an XML schema definition with a large maxOccurs value,     which triggers excessive memory consumption during the validation of an     XML file.

Impact :

A remote attacker could entice a user or automated system to validate     an XML file using a specially crafted XML schema file, leading to a     Denial of Service (stack consumption and crash).

Workaround :

There is no known workaround at this time.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200903-19.
#
# The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(35817);
  script_version("1.12");
  script_cvs_date("Date: 2018/08/10 18:07:07");

  script_cve_id("CVE-2008-4482");
  script_xref(name:"GLSA", value:"200903-19");

  script_name(english:"GLSA-200903-19 : Xerces-C++: Denial of Service");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-200903-19
(Xerces-C++: Denial of Service)

    Frank Rast reported that the XML parser in Xerces-C++ does not
    correctly handle an XML schema definition with a large maxOccurs value,
    which triggers excessive memory consumption during the validation of an
    XML file.
  
Impact :

    A remote attacker could entice a user or automated system to validate
    an XML file using a specially crafted XML schema file, leading to a
    Denial of Service (stack consumption and crash).
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200903-19"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All Xerces-C++ users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=dev-libs/xerces-c-3.0.0-r1'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_cwe_id(20);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:xerces-c");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/03/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/03/10");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2018 Tenable Network Security, Inc.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"dev-libs/xerces-c", unaffected:make_list("ge 3.0.0-r1"), vulnerable:make_list("lt 3.0.0-r1"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Xerces-C++");
}