- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200706-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: libexif: Integer overflow vulnerability Date: June 05, 2007 Bugs: #178081 ID: 200706-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== libexif fails to handle Exif (EXchangeable Image File) data inputs, making it vulnerable to an integer overflow. Background ========== libexif is a library for parsing, editing and saving Exif data. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 media-libs/libexif < 0.6.15 >= 0.6.15 Description =========== Victor Stinner reported an integer overflow in the exif_data_load_data_entry() function from file exif-data.c while handling Exif data. Impact ====== An attacker could entice a user to process a file with specially crafted Exif extensions with an application making use of libexif, which will trigger the integer overflow and potentially execute arbitrary code or crash the application. Workaround ========== There is no known workaround at this time. Resolution ========== All libexif users should upgrade to the latest version. Please note that users upgrading from "<=media-libs/libexif-0.6.13" should also run revdep-rebuild after their upgrade. # emerge --sync # emerge --ask --oneshot --verbose ">=media-libs/libexif-0.6.15" # revdep-rebuild --library=/usr/lib/libexif.so References ========== [ 1 ] CVE-2007-2645 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2645 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200706-01.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@xxxxxxxxxx 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
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