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[ GLSA 200812-06 ] libxml2: Multiple vulnerabilities
From: Robert Buchholz <rbu () gentoo org>
Date: Tue, 2 Dec 2008 18:42:03 +0100
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200812-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: libxml2: Multiple vulnerabilities Date: December 02, 2008 Bugs: #234099, #237806, #239346, #245960 ID: 200812-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities in libxml2 might lead to execution of arbitrary code or Denial of Service. Background ========== libxml2 is the XML (eXtended Markup Language) C parser and toolkit initially developed for the Gnome project. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libxml2 < 2.7.2-r1 >= 2.7.2-r1 Description =========== Multiple vulnerabilities were reported in libxml2: * Andreas Solberg reported that libxml2 does not properly detect recursion during entity expansion in an attribute value (CVE-2008-3281). * A heap-based buffer overflow has been reported in the xmlParseAttValueComplex() function in parser.c (CVE-2008-3529). * Christian Weiske reported that predefined entity definitions in entities are not properly handled (CVE-2008-4409). * Drew Yao of Apple Product Security reported an integer overflow in the xmlBufferResize() function that can lead to an infinite loop (CVE-2008-4225). * Drew Yao of Apple Product Security reported an integer overflow in the xmlSAX2Characters() function leading to a memory corruption (CVE-2008-4226). Impact ====== A remote attacker could entice a user or automated system to open a specially crafted XML document with an application using libxml2, possibly resulting in the exeution of arbitrary code or a high CPU and memory consumption. Workaround ========== There is no known workaround at this time. Resolution ========== All libxml2 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.7.2-r1" References ========== [ 1 ] CVE-2008-3281 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3281 [ 2 ] CVE-2008-3529 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3529 [ 3 ] CVE-2008-4409 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4409 [ 4 ] CVE-2008-4225 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4225 [ 5 ] CVE-2008-4226 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4226 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200812-06.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 200812-06 ] libxml2: Multiple vulnerabilities Robert Buchholz (Dec 02)