An off-by-one out-of-bounds write flaw was found in the way libxml, a library for providing XML and HTML support, evaluated certain XPointer parts (XPointer is used by libxml to include only the part from the returned XML document, that can be accessed using the XPath expression given with the XPointer). A remote attacker could provide a specially-crafted XML file, which once opened in an application, linked against libxml, would lead to that application crash, or, potentially arbitrary code execution with the privileges of the user running the application. Note: The flaw to be exploited requires the particular application, linked against libxml, to use the XPointer evaluation functionality. References: [1] http://googlechromereleases.blogspot.com/2012/05/stable-channel-update.html [2] http://www.securitytracker.com/id/1027067
Gentoo bug: [3] https://bugs.gentoo.org/show_bug.cgi?id=416209 Relevant upstream patch: [4] http://git.gnome.org/browse/libxml2/commit/?id=d8e1faeaa99c7a7c07af01c1c72de352eb590a3e
This issue affects the versions of the libxml2 package, as shipped with Red Hat Enterprise Linux 5 and 6. -- This issue affects the versions of the libxml2 package, as shipped with Fedora release of 15 and 16. -- This issue did NOT affect the versions of the libxml package, as shipped with Fedora release of 15 and 16.
Created libxml2 tracking bugs for this issue Affects: fedora-all [bug 822171]
This issue has been addressed in following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Via RHSA-2012:1288 https://rhn.redhat.com/errata/RHSA-2012-1288.html
Created mingw32-libxml2 tracking bugs for this issue Affects: epel-5 [bug 858914] Affects: fedora-all [bug 858915]
This issue has been addressed in following products: Red Hat Enterprise Linux 6 Via RHSA-2013:0217 https://rhn.redhat.com/errata/RHSA-2013-0217.html
Statement: (none)