Scientific Linux: CVE-2012-0841 Moderate: libxml2 Denial of Service Threat

Date: Tue, 6 Mar 2012 14:48:36 -0600
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Subject: Security ERRATA Moderate: libxml2 on SL5.x, SL6.x i386/x86_64
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Synopsis: Moderate: libxml2 security update
Issue Date: 2012-02-21
CVE Numbers: CVE-2012-0841

The libxml2 library is a development toolbox providing the implementation
of various XML standards.

It was found that the hashing routine used by libxml2 arrays was
susceptible to predictable hash collisions. Sending a specially-crafted
message to an XML service could result in longer processing time, which
could lead to a denial of service. To mitigate this issue, randomization
has been added to the hashing function to reduce the chance of an attacker
successfully causing intentional collisions. (CVE-2012-0841)

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.

SL5:
 i386
 libxml2-2.6.26-2.1.15.el5_8.2.i386.rpm
 libxml2-debuginfo-2.6.26-2.1.15.el5_8.2.i386.rpm
 libxml2-devel-2.6.26-2.1.15.el5_8.2.i386.rpm
 libxml2-python-2.6.26-2.1.15.el5_8.2.i386.rpm
 x86_64
 libxml2-2.6.26-2.1.15.el5_8.2.i386.rpm
 libxml2-2.6.26-2.1.15.el5_8.2.x86_64.rpm
 libxml2-debuginfo-2.6.26-2.1.15.el5_8.2.i386.rpm
 libxml2-debuginfo-2.6.26-2.1.15.el5_8.2.x86_64.rpm
 libxml2-devel-2.6.26-2.1.15.el5_8.2.i386.rpm
 libxml2-devel-2.6.26-2.1.15.el5_8.2.x86_64.rpm
 libxml2-python-2.6.26-2.1.15.el5_8.2.x86_64.rpm
SL6:
 i386
 libxml2-2.7.6-4.el6_2.4.i686.rpm
 libxml2-debuginfo-2.7.6-4.el6_2.4.i686.rpm
 libxml2-devel-2.7.6-4.el6_2.4.i686.rpm
 libxml2-python-2.7.6-4.el6_2.4.i686.rpm
 libxml2-static-2.7.6-4.el6_2.4.i686.rpm
 x86_64
 libxml2-2.7.6-4.el6_2.4.i686.rpm
 libxml2-2.7.6-4.el6_2.4.x86_64.rpm
 libxml2-debuginfo-2.7.6-4.el6_2.4.i686.rpm
 libxml2-debuginfo-2.7.6-4.el6_2.4.x86_64.rpm
 libxml2-devel-2.7.6-4.el6_2.4.i686.rpm
 libxml2-devel-2.7.6-4.el6_2.4.x86_64.rpm
 libxml2-python-2.7.6-4.el6_2.4.x86_64.rpm
 libxml2-static-2.7.6-4.el6_2.4.x86_64.rpm

- Scientific Linux Development Team