GLSA-200806-07 : X.Org X server: Multiple vulnerabilities

Critical Nessus Plugin ID 33243


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


The remote host is affected by the vulnerability described in GLSA-200806-07 (X.Org X server: Multiple vulnerabilities)

Regenrecht reported multiple vulnerabilities in various X server extensions via iDefense:
The SProcSecurityGenerateAuthorization() and SProcRecordCreateContext() functions of the RECORD and Security extensions are lacking proper parameter validation (CVE-2008-1377).
An integer overflow is possible in the function ShmPutImage() of the MIT-SHM extension (CVE-2008-1379).
The RENDER extension contains several possible integer overflows in the AllocateGlyph() function (CVE-2008-2360) which could possibly lead to a heap-based buffer overflow. Further possible integer overflows have been found in the ProcRenderCreateCursor() function (CVE-2008-2361) as well as in the SProcRenderCreateLinearGradient(), SProcRenderCreateRadialGradient() and SProcRenderCreateConicalGradient() functions (CVE-2008-2362).
Impact :

Exploitation of these vulnerabilities could possibly lead to the remote execution of arbitrary code with root privileges, if the server is running as root, which is the default. It is also possible to crash the server by making use of these vulnerabilities.
Workaround :

It is possible to avoid these vulnerabilities by disabling the affected server extensions. Therefore edit the configuration file (/etc/X11/xorg.conf) to contain the following in the appropriate places:
Section 'Extensions' Option 'MIT-SHM' 'disable' Option 'RENDER' 'disable' Option 'SECURITY' 'disable' EndSection Section 'Module' Disable 'record' EndSection


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

See Also

Plugin Details

Severity: Critical

ID: 33243

File Name: gentoo_GLSA-200806-07.nasl

Version: $Revision: 1.12 $

Type: local

Published: 2008/06/24

Modified: 2017/08/14

Dependencies: 12634

Risk Information

Risk Factor: Critical


Base Score: 10

Temporal Score: 8.3

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

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

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: 2008/06/19

Reference Information

CVE: CVE-2008-1377, CVE-2008-1379, CVE-2008-2360, CVE-2008-2361, CVE-2008-2362

OSVDB: 46187, 46188, 46189, 46190, 46191

GLSA: 200806-07

CWE: 189