The libxml2 library is a development toolbox providing the implementation of various XML standards. A heap-based buffer overflow flaw was found in the way libxml2 decoded entity references with long names. A remote attacker could provide a specially-crafted XML file that, when opened in an application linked against libxml2, would cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. Updated packages are available from ftp.redhat.com.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: libxml2 security update Advisory ID: RHSA-2012:0104-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0104.html Issue date: 2012-02-08 CVE Names: CVE-2011-3919 ===================================================================== 1. Summary: Updated libxml2 packages that fix one security issue are now available for Red Hat Enterprise Linux 5.6 Extended Update Support. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux EUS (v. 5.6 server) - i386, ia64, ppc, s390x, x86_64 3. Description: The libxml2 library is a development toolbox providing the implementation of various XML standards. A heap-based buffer overflow flaw was found in the way libxml2 decoded entity references with long names. A remote attacker could provide a specially-crafted XML file that, when opened in an application linked against libxml2, would cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3919) All users of libxml2 are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. The desktop must be restarted (log out, then log back in) for this update to take effect. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 771896 - CVE-2011-3919 libxml2: Heap-based buffer overflow when decoding an entity reference with a long name 6. Package List: Red Hat Enterprise Linux EUS (v. 5.6 server): Source: libxml2-2.6.26-126.96.36.199.el5_6.2.src.rpm i386: libxml2-2.6.26-188.8.131.52.el5_6.2.i386.rpm libxml2-debuginfo-2.6.26-184.108.40.206.el5_6.2.i386.rpm libxml2-devel-2.6.26-220.127.116.11.el5_6.2.i386.rpm libxml2-python-2.6.26-18.104.22.168.el5_6.2.i386.rpm ia64: libxml2-2.6.26-22.214.171.124.el5_6.2.i386.rpm libxml2-2.6.26-126.96.36.199.el5_6.2.ia64.rpm libxml2-debuginfo-2.6.26-188.8.131.52.el5_6.2.i386.rpm libxml2-debuginfo-2.6.26-184.108.40.206.el5_6.2.ia64.rpm libxml2-devel-2.6.26-220.127.116.11.el5_6.2.ia64.rpm libxml2-python-2.6.26-18.104.22.168.el5_6.2.ia64.rpm ppc: libxml2-2.6.26-22.214.171.124.el5_6.2.ppc.rpm libxml2-2.6.26-126.96.36.199.el5_6.2.ppc64.rpm libxml2-debuginfo-2.6.26-188.8.131.52.el5_6.2.ppc.rpm libxml2-debuginfo-2.6.26-184.108.40.206.el5_6.2.ppc64.rpm libxml2-devel-2.6.26-220.127.116.11.el5_6.2.ppc.rpm libxml2-devel-2.6.26-18.104.22.168.el5_6.2.ppc64.rpm libxml2-python-2.6.26-22.214.171.124.el5_6.2.ppc.rpm s390x: libxml2-2.6.26-126.96.36.199.el5_6.2.s390.rpm libxml2-2.6.26-188.8.131.52.el5_6.2.s390x.rpm libxml2-debuginfo-2.6.26-184.108.40.206.el5_6.2.s390.rpm libxml2-debuginfo-2.6.26-220.127.116.11.el5_6.2.s390x.rpm libxml2-devel-2.6.26-18.104.22.168.el5_6.2.s390.rpm libxml2-devel-2.6.26-22.214.171.124.el5_6.2.s390x.rpm libxml2-python-2.6.26-126.96.36.199.el5_6.2.s390x.rpm x86_64: libxml2-2.6.26-188.8.131.52.el5_6.2.i386.rpm libxml2-2.6.26-184.108.40.206.el5_6.2.x86_64.rpm libxml2-debuginfo-2.6.26-220.127.116.11.el5_6.2.i386.rpm libxml2-debuginfo-2.6.26-18.104.22.168.el5_6.2.x86_64.rpm libxml2-devel-2.6.26-22.214.171.124.el5_6.2.i386.rpm libxml2-devel-2.6.26-126.96.36.199.el5_6.2.x86_64.rpm libxml2-python-2.6.26-188.8.131.52.el5_6.2.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2011-3919.html https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <email@example.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2012 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFPMtcTXlSAg2UNWIIRAs51AJ0VuSLgG1VEhppQdJRbBK510yn+pACcC9B8 jJC5T2Vb2xT58inD+yr25GY= =MdOV -----END PGP SIGNATURE-----