--nextPart2421528.BODa9tadxL Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200604-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: zgv, xzgv: Heap overflow Date: April 21, 2006 Bugs: #127008 ID: 200604-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== xzgv and zgv attempt to decode JPEG images within the CMYK/YCCK colour space incorrectly, potentially resulting in the execution of arbitrary code. Background ========== xzgv and zgv are picture viewing utilities with a thumbnail based file selector. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 media-gfx/xzgv < 0.8-r2 >= 0.8-r2 2 media-gfx/zgv < 5.8 >= 5.8 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. ------------------------------------------------------------------- Description =========== Andrea Barisani of Gentoo Linux discovered xzgv and zgv allocate insufficient memory when rendering images with more than 3 output components, such as images using the YCCK or CMYK colour space. When xzgv or zgv attempt to render the image, data from the image overruns a heap allocated buffer. Impact ====== An attacker may be able to construct a malicious image that executes arbitrary code with the permissions of the xzgv or zgv user when attempting to render the image. Workaround ========== There is no known workaround at this time. Resolution ========== All xzgv users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=media-gfx/xzgv-0.8-r2" All zgv users should also upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=media-gfx/zgv-5.8" References ========== [ 1 ] CVE-2006-1060 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1060 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200604-10.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 2006 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/2.0 --nextPart2421528.BODa9tadxL Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) iD8DBQBESGNbzKC5hMHO6rkRArSuAKCBbK6HZ5jlOHCkQSv/46GuhHF/vQCfULqs QFaWoCI8VHnSynA9bk20E9I= =qdnX -----END PGP SIGNATURE----- --nextPart2421528.BODa9tadxL--