GLSA-200609-07 : LibXfont, monolithic X.org: Multiple integer overflows

This script is Copyright (C) 2006-2014 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-200609-07
(LibXfont, monolithic X.org: Multiple integer overflows)

Several integer overflows have been found in the CID font parser.

Impact :

A remote attacker could exploit this vulnerability by enticing a user
to load a malicious font file resulting in the execution of arbitrary
code with the permissions of the user running the X server which
typically is the root user. A local user could exploit this
vulnerability to gain elevated privileges.

Workaround :

Disable CID-encoded Type 1 fonts by removing the 'type1' module and
replacing it with the 'freetype' module in xorg.conf.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200609-07.xml

Solution :

All libXfont users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=x11-libs/libXfont-1.2.1'
All monolithic X.org users are advised to migrate to modular X.org.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 22352 (gentoo_GLSA-200609-07.nasl)

Bugtraq ID:

CVE ID: CVE-2006-3739
CVE-2006-3740