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[ GLSA 200804-06 ] UnZip: User-assisted execution of arbitrary code
From: Robert Buchholz <rbu () gentoo org>
Date: Sun, 6 Apr 2008 19:19:47 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200804-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: UnZip: User-assisted execution of arbitrary code Date: April 06, 2008 Bugs: #213761 ID: 200804-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A double free vulnerability discovered in UnZip might lead to the execution of arbitrary code. Background ========== Info-ZIP's UnZip is a tool to list and extract files inside PKZIP compressed files. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-arch/unzip < 5.52-r2 >= 5.52-r2 Description =========== Tavis Ormandy of the Google Security Team discovered that the NEEDBITS macro in the inflate_dynamic() function in the file inflate.c can be invoked using invalid buffers, which can lead to a double free. Impact ====== Remote attackers could entice a user or automated system to open a specially crafted ZIP file that might lead to the execution of arbitrary code or a Denial of Service. Workaround ========== There is no known workaround at this time. Resolution ========== All UnZip users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-arch/unzip-5.52-r2" References ========== [ 1 ] CVE-2008-0888 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0888 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200804-06.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
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- [ GLSA 200804-06 ] UnZip: User-assisted execution of arbitrary code Robert Buchholz (Apr 06)