GLSA-201009-07 : libxml2: Denial of Service

This script is Copyright (C) 2010-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-201009-07
(libxml2: Denial of Service)

The following vulnerabilities were reported after a test with the
Codenomicon XML fuzzing framework:
Two use-after-free vulnerabilities are possible when parsing a XML file
with Notation or Enumeration attribute types (CVE-2009-2416).
A stack consumption vulnerability can be triggered via a large depth of
element declarations in a DTD, related to a function recursion
(CVE-2009-2414).

Impact :

A remote attacker could entice a user or automated system to open a
specially crafted XML document with an application using libxml2
resulting in a Denial of Service condition.

Workaround :

There is no known workaround at this time.

See also :

http://www.gentoo.org/security/en/glsa/glsa-201009-07.xml

Solution :

All libxml2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=dev-libs/libxml2-2.7.3-r2'
NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since August 30, 2009. It is likely that your system is
already no longer affected by this issue.

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 3.7
(CVSS2#E:ND/RL:OF/RC:ND)
Public Exploit Available : false

Family: Gentoo Local Security Checks

Nessus Plugin ID: 49636 (gentoo_GLSA-201009-07.nasl)

Bugtraq ID: 36010

CVE ID: CVE-2009-2414
CVE-2009-2416