Red Hat Security Advisory: libxml2 security update Security Advisory secalert@redhat.com Red Hat Security Response Team RHSA-2012:1288 Final 1 1 2012-09-18T17:08:00Z Current version 2012-09-18T17:08:00Z 2012-09-18T17:08:00Z Red Hat rhsa-to-cvrf 1.0.1484 2012-09-18T17:22:02Z Updated libxml2 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5 and 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The libxml2 library is a development toolbox providing the implementation of various XML standards. Multiple integer overflow flaws, leading to heap-based buffer overflows, were found in the way libxml2 handled documents that enable entity expansion. A remote attacker could provide a large, 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-2012-2807) A one byte buffer overflow was found in the way libxml2 evaluated certain parts of XML Pointer Language (XPointer) expressions. 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-2011-3102) All users of libxml2 are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect. Please see https://www.redhat.com/footer/terms-of-use.html Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate https://rhn.redhat.com/errata/RHSA-2012-1288.html https://rhn.redhat.com/errata/RHSA-2012-1288.html https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/security/updates/classification/#moderate Red Hat Enterprise Linux Desktop (v. 5 client) Red Hat Enterprise Linux HPC Node Optional (v. 6) Red Hat Enterprise Linux Server (v. 6) Red Hat Enterprise Linux Workstation (v. 6) Red Hat Enterprise Linux Desktop Optional (v. 6) Red Hat Enterprise Linux Workstation Optional (v. 6) Red Hat Enterprise Linux HPC Node (v. 6) Red Hat Enterprise Linux (v. 5 server) Red Hat Enterprise Linux Desktop (v. 6) RHEL Desktop Workstation (v. 5 client) Red Hat Enterprise Linux Server Optional (v. 6) libxml2-2.6.26-2.1.15.el5_8.5.src.rpm libxml2-2.7.6-8.el6_3.3.src.rpm libxml2-2.6.26-2.1.15.el5_8.5 as a component of Red Hat Enterprise Linux Desktop (v. 5 client) libxml2-2.7.6-8.el6_3.3 as a component of Red Hat Enterprise Linux HPC Node Optional (v. 6) libxml2-2.7.6-8.el6_3.3 as a component of Red Hat Enterprise Linux Server (v. 6) libxml2-2.7.6-8.el6_3.3 as a component of Red Hat Enterprise Linux Workstation (v. 6) libxml2-2.7.6-8.el6_3.3 as a component of Red Hat Enterprise Linux Desktop Optional (v. 6) libxml2-2.7.6-8.el6_3.3 as a component of Red Hat Enterprise Linux Workstation Optional (v. 6) libxml2-2.7.6-8.el6_3.3 as a component of Red Hat Enterprise Linux HPC Node (v. 6) libxml2-2.6.26-2.1.15.el5_8.5 as a component of Red Hat Enterprise Linux (v. 5 server) libxml2-2.7.6-8.el6_3.3 as a component of Red Hat Enterprise Linux Desktop (v. 6) libxml2-2.6.26-2.1.15.el5_8.5 as a component of RHEL Desktop Workstation (v. 5 client) libxml2-2.7.6-8.el6_3.3 as a component of Red Hat Enterprise Linux Server Optional (v. 6) A one byte buffer overflow was found in the way libxml2 evaluated certain parts of XML Pointer Language (XPointer) expressions. 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. 2012-05-15T00:00:00Z 2012-05-15T00:00:00Z CVE-2011-3102 5Client-5.8.Z:libxml2-2.6.26-2.1.15.el5_8.5 5Client-Workstation-5.8.Z:libxml2-2.6.26-2.1.15.el5_8.5 5Server-5.8.Z:libxml2-2.6.26-2.1.15.el5_8.5 6Client-6.3.z:libxml2-2.7.6-8.el6_3.3 6Client-optional-6.3.z:libxml2-2.7.6-8.el6_3.3 6ComputeNode-6.3.z:libxml2-2.7.6-8.el6_3.3 6ComputeNode-optional-6.3.z:libxml2-2.7.6-8.el6_3.3 6Server-6.3.z:libxml2-2.7.6-8.el6_3.3 6Server-optional-6.3.z:libxml2-2.7.6-8.el6_3.3 6Workstation-6.3.z:libxml2-2.7.6-8.el6_3.3 6Workstation-optional-6.3.z:libxml2-2.7.6-8.el6_3.3 Low 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P 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/knowledge/articles/11258 https://rhn.redhat.com/errata/RHSA-2012-1288.html https://www.redhat.com/security/data/cve/CVE-2011-3102.html CVE-2011-3102 https://bugzilla.redhat.com/show_bug.cgi?id=822109 bz#822109: CVE-2011-3102 libxml: An off-by-one out-of-bounds write by XPointer part evaluation Multiple integer overflow flaws, leading to heap-based buffer overflows, were found in the way libxml2 handled documents that enable entity expansion. A remote attacker could provide a large, 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. 2012-06-27T00:00:00Z 2012-06-26T00:00:00Z CVE-2012-2807 5Client-5.8.Z:libxml2-2.6.26-2.1.15.el5_8.5 5Client-Workstation-5.8.Z:libxml2-2.6.26-2.1.15.el5_8.5 5Server-5.8.Z:libxml2-2.6.26-2.1.15.el5_8.5 6Client-6.3.z:libxml2-2.7.6-8.el6_3.3 6Client-optional-6.3.z:libxml2-2.7.6-8.el6_3.3 6ComputeNode-6.3.z:libxml2-2.7.6-8.el6_3.3 6ComputeNode-optional-6.3.z:libxml2-2.7.6-8.el6_3.3 6Server-6.3.z:libxml2-2.7.6-8.el6_3.3 6Server-optional-6.3.z:libxml2-2.7.6-8.el6_3.3 6Workstation-6.3.z:libxml2-2.7.6-8.el6_3.3 6Workstation-optional-6.3.z:libxml2-2.7.6-8.el6_3.3 Moderate 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P 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/knowledge/articles/11258 https://rhn.redhat.com/errata/RHSA-2012-1288.html https://www.redhat.com/security/data/cve/CVE-2012-2807.html CVE-2012-2807 https://bugzilla.redhat.com/show_bug.cgi?id=835863 bz#835863: CVE-2012-2807 libxml2 (64-bit): Multiple integer overflows, leading to DoS or possibly other unspecified impact