From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1IhCXq-0006X2-H9 for garchives@archives.gentoo.org; Sun, 14 Oct 2007 23:06:51 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.14.1/8.14.0) with SMTP id l9EMspB6002527; Sun, 14 Oct 2007 22:54:51 GMT Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) by robin.gentoo.org (8.14.1/8.14.0) with ESMTP id l9EMZY7K005969 for ; Sun, 14 Oct 2007 22:35:34 GMT Received: from localhost (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id 47DDF65622 for ; Sun, 14 Oct 2007 22:35:34 +0000 (UTC) X-Virus-Scanned: amavisd-new at gentoo.org X-Spam-Score: -1.775 X-Spam-Level: X-Spam-Status: No, score=-1.775 required=5.5 tests=[AWL=-0.306, BAYES_00=-2.599, DNS_FROM_OPENWHOIS=1.13] Received: from smtp.gentoo.org ([127.0.0.1]) by localhost (smtp.gentoo.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8T6Udu+ruXew for ; Sun, 14 Oct 2007 22:35:28 +0000 (UTC) Received: from smtp7-g19.free.fr (smtp7-g19.free.fr [212.27.42.64]) by smtp.gentoo.org (Postfix) with ESMTP id E900F65537 for ; Sun, 14 Oct 2007 22:35:27 +0000 (UTC) Received: from smtp7-g19.free.fr (localhost [127.0.0.1]) by smtp7-g19.free.fr (Postfix) with ESMTP id A4E03322814; Mon, 15 Oct 2007 00:35:26 +0200 (CEST) Received: from [88.163.239.36] (mas91-3-88-163-239-36.fbx.proxad.net [88.163.239.36]) by smtp7-g19.free.fr (Postfix) with ESMTP id 1F1A2322805; Mon, 15 Oct 2007 00:35:26 +0200 (CEST) Message-ID: <47129A63.4060602@gentoo.org> Date: Mon, 15 Oct 2007 00:38:27 +0200 From: Pierre-Yves Rofes User-Agent: Thunderbird 2.0.0.6 (X11/20070806) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-announce@gentoo.org MIME-Version: 1.0 To: gentoo-announce@lists.gentoo.org CC: full-disclosure@lists.grok.org.uk, bugtraq@securityfocus.com, security-alerts@linuxsecurity.com Subject: [gentoo-announce] [ GLSA 200710-16 ] X.Org X server: Composite local privilege escalation X-Enigmail-Version: 0.95.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Archives-Salt: ed436268-58ff-47fa-b9ec-46c8caa22780 X-Archives-Hash: 705ef2ff567e568b8d3e6af8a7395852 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200710-16 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: X.Org X server: Composite local privilege escalation Date: October 14, 2007 Bugs: #191964 ID: 200710-16 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A vulnerability has been discovered in the Composite extension of the X.Org X server, allowing for a local privilege escalation. Background ========== The X Window System is a graphical windowing system based on a client/server model. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 x11-base/xorg-server < 1.3.0.0-r1 >= 1.3.0.0-r1 Description =========== 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. Resolution ========== All X.Org X server users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=x11-base/xorg-server-1.3.0.0-r1" References ========== [ 1 ] CVE-2007-4730 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4730 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200710-16.xml Concerns? ========= 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 security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHEppiuhJ+ozIKI5gRAmOeAJ46xK+4nH8LWGxbNmnlmPrltBqsHgCfUTNK 8qUzM6SvnXk2c2yZgp50GTk= =DiOR -----END PGP SIGNATURE----- -- gentoo-announce@gentoo.org mailing list