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

Medium Nessus Plugin ID 27051


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


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.


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

See Also

Plugin Details

Severity: Medium

ID: 27051

File Name: gentoo_GLSA-200710-16.nasl

Version: $Revision: 1.13 $

Type: local

Published: 2007/10/15

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.3

Temporal Score: 3.7

Vector: CVSS2#AV:L/AC:L/Au:S/C:P/I:P/A:P

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:xorg-server, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2007/10/14

Vulnerability Publication Date: 2007/09/06

Reference Information

CVE: CVE-2007-4730

BID: 25606

OSVDB: 37726

GLSA: 200710-16

CWE: 119