GLSA-200710-16 : X.Org X server: Composite local privilege escalation

This script is Copyright (C) 2007-2015 Tenable Network Security, Inc.

Synopsis :

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

Description :

The remote host is affected by the vulnerability described in GLSA-200710-16
(X.Org X server: Composite local privilege escalation)

Aaron Plattner discovered a buffer overflow in the compNewPixmap()
function when copying data from a large pixel depth pixmap into a
smaller pixel depth pixmap.

Impact :

A local attacker could execute arbitrary code with the privileges of
the user running the X server, typically root.

Workaround :

Disable the Composite extension by setting ' Option 'Composite'
'disable' ' in the Extensions section of xorg.conf.
Note: This could affect the functionality of some applications.

See also :

Solution :

All X.Org X server users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=x11-base/xorg-server-'

Risk factor :

Medium / CVSS Base Score : 4.3
CVSS Temporal Score : 3.7
Public Exploit Available : true

Family: Gentoo Local Security Checks

Nessus Plugin ID: 27051 (gentoo_GLSA-200710-16.nasl)

Bugtraq ID: 25606

CVE ID: CVE-2007-4730

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