- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200806-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: FreeType: User-assisted execution of arbitrary code Date: June 23, 2008 Bugs: #225851 ID: 200806-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Font parsing vulnerabilities in FreeType might lead to user-assisted execution of arbitrary code. Background ========== FreeType is a font rendering library for TrueType Font (TTF) and Printer Font Binary (PFB). Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 media-libs/freetype < 2.3.6 >= 2.3.6 Description =========== Regenrecht reported multiple vulnerabilities in FreeType via iDefense: * An integer overflow when parsing values in the Private dictionary table in a PFB file, leading to a heap-based buffer overflow (CVE-2008-1806). * An invalid free() call related to parsing an invalid "number of axes" field in a PFB file (CVE-2008-1807). * Multiple off-by-one errors when parsing PBF and TTF files, leading to heap-based buffer overflows (CVE-2008-1808). Impact ====== A remote attacker could entice a user to open a specially crafted TTF or PBF file, possibly resulting in the execution of arbitrary code with the privileges of the user running an application linked against FreeType (such as the X.org X server, running as root). Workaround ========== There is no known workaround at this time. Resolution ========== All FreeType users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=media-libs/freetype-2.3.6" References ========== [ 1 ] CVE-2008-1806 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1806 [ 2 ] CVE-2008-1807 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1807 [ 3 ] CVE-2008-1808 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1808 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200806-10.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 2008 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