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Multiple vulnerabilities have been discovered in the X.Org X server, possibly allowing for the remote execution of arbitrary code with root privileges.
The X Window System is a graphical windowing system based on a client/server model.
Regenrecht reported multiple vulnerabilities in various X server extensions via iDefense:
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.
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.org X Server users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=x11-base/xorg-server-126.96.36.199-r6"
[ 1 ] CVE-2008-1377
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1377 [ 2 ] CVE-2008-1379
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1379 [ 3 ] CVE-2008-2360
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2360 [ 4 ] CVE-2008-2361
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2361 [ 5 ] CVE-2008-2362
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to firstname.lastname@example.org or alternatively, you may file a bug at http://bugs.gentoo.org.
Copyright 2008 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
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