Red Hat: 2012:0324-01: libxml2: Moderate Advisory
Summary
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.
Summary
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
References
https://www.redhat.com/security/data/cve/CVE-2012-0841.html https://access.redhat.com/security/updates/classification/#moderate
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
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-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-python-2.6.26-2.1.15.el5_8.2.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386:
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
x86_64:
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
Red Hat Enterprise Linux (v. 5 server):
Source:
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
ia64:
libxml2-2.6.26-2.1.15.el5_8.2.i386.rpm
libxml2-2.6.26-2.1.15.el5_8.2.ia64.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.ia64.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.2.ia64.rpm
libxml2-python-2.6.26-2.1.15.el5_8.2.ia64.rpm
ppc:
libxml2-2.6.26-2.1.15.el5_8.2.ppc.rpm
libxml2-2.6.26-2.1.15.el5_8.2.ppc64.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.2.ppc.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.2.ppc64.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.2.ppc.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.2.ppc64.rpm
libxml2-python-2.6.26-2.1.15.el5_8.2.ppc.rpm
s390x:
libxml2-2.6.26-2.1.15.el5_8.2.s390.rpm
libxml2-2.6.26-2.1.15.el5_8.2.s390x.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.2.s390.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.2.s390x.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.2.s390.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.2.s390x.rpm
libxml2-python-2.6.26-2.1.15.el5_8.2.s390x.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
Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386:
libxml2-2.7.6-4.el6_2.4.i686.rpm
libxml2-debuginfo-2.7.6-4.el6_2.4.i686.rpm
libxml2-python-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-python-2.7.6-4.el6_2.4.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386:
libxml2-debuginfo-2.7.6-4.el6_2.4.i686.rpm
libxml2-devel-2.7.6-4.el6_2.4.i686.rpm
libxml2-static-2.7.6-4.el6_2.4.i686.rpm
x86_64:
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-static-2.7.6-4.el6_2.4.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
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-python-2.7.6-4.el6_2.4.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64:
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-static-2.7.6-4.el6_2.4.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
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
ppc64:
libxml2-2.7.6-4.el6_2.4.ppc.rpm
libxml2-2.7.6-4.el6_2.4.ppc64.rpm
libxml2-debuginfo-2.7.6-4.el6_2.4.ppc.rpm
libxml2-debuginfo-2.7.6-4.el6_2.4.ppc64.rpm
libxml2-devel-2.7.6-4.el6_2.4.ppc.rpm
libxml2-devel-2.7.6-4.el6_2.4.ppc64.rpm
libxml2-python-2.7.6-4.el6_2.4.ppc64.rpm
s390x:
libxml2-2.7.6-4.el6_2.4.s390.rpm
libxml2-2.7.6-4.el6_2.4.s390x.rpm
libxml2-debuginfo-2.7.6-4.el6_2.4.s390.rpm
libxml2-debuginfo-2.7.6-4.el6_2.4.s390x.rpm
libxml2-devel-2.7.6-4.el6_2.4.s390.rpm
libxml2-devel-2.7.6-4.el6_2.4.s390x.rpm
libxml2-python-2.7.6-4.el6_2.4.s390x.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
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
i386:
libxml2-debuginfo-2.7.6-4.el6_2.4.i686.rpm
libxml2-static-2.7.6-4.el6_2.4.i686.rpm
ppc64:
libxml2-debuginfo-2.7.6-4.el6_2.4.ppc64.rpm
libxml2-static-2.7.6-4.el6_2.4.ppc64.rpm
s390x:
libxml2-debuginfo-2.7.6-4.el6_2.4.s390x.rpm
libxml2-static-2.7.6-4.el6_2.4.s390x.rpm
x86_64:
libxml2-debuginfo-2.7.6-4.el6_2.4.x86_64.rpm
libxml2-static-2.7.6-4.el6_2.4.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
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
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
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
i386:
libxml2-debuginfo-2.7.6-4.el6_2.4.i686.rpm
libxml2-static-2.7.6-4.el6_2.4.i686.rpm
x86_64:
libxml2-debuginfo-2.7.6-4.el6_2.4.x86_64.rpm
libxml2-static-2.7.6-4.el6_2.4.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
Topic
Updated libxml2 packages that fix one security issue are now available forRed Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.
Topic
Relevant Releases Architectures
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
Bugs Fixed
787067 - CVE-2012-0841 libxml2: hash table collisions CPU usage DoS