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Red Hat 5.6 RHSA-2012:0104-01 Critical: libxml2 Buffer Overflow

red hat
Calendar Grey February 8, 2012
Dist Redhat Esm H88
Critical libxml2 upgrade for Red Hat Enterprise Linux tackles a buffer overflow vulnerability and greatly improves overall security.
Updated libxml2 packages that fix one security issue are now available for Red Hat Enterprise Linux 5.6 Extended Update Support

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

Summary

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.

Topics%20covered

Topics Covered

security advisory security issue update buffer overflow red hat important libxml2

References

https://access.redhat.com/security/cve/CVE-2011-3919 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux EUS (v. 5.6 server):
Source: libxml2-2.6.26-2.1.2.8.el5_6.2.src.rpm
i386: libxml2-2.6.26-2.1.2.8.el5_6.2.i386.rpm libxml2-debuginfo-2.6.26-2.1.2.8.el5_6.2.i386.rpm libxml2-devel-2.6.26-2.1.2.8.el5_6.2.i386.rpm libxml2-python-2.6.26-2.1.2.8.el5_6.2.i386.rpm
ia64: libxml2-2.6.26-2.1.2.8.el5_6.2.i386.rpm libxml2-2.6.26-2.1.2.8.el5_6.2.ia64.rpm libxml2-debuginfo-2.6.26-2.1.2.8.el5_6.2.i386.rpm libxml2-debuginfo-2.6.26-2.1.2.8.el5_6.2.ia64.rpm libxml2-devel-2.6.26-2.1.2.8.el5_6.2.ia64.rpm libxml2-python-2.6.26-2.1.2.8.el5_6.2.ia64.rpm
ppc: libxml2-2.6.26-2.1.2.8.el5_6.2.ppc.rpm libxml2-2.6.26-2.1.2.8.el5_6.2.ppc64.rpm libxml2-debuginfo-2.6.26-2.1.2.8.el5_6.2.ppc.rpm libxml2-debuginfo-2.6.26-2.1.2.8.el5_6.2.ppc64.rpm libxml2-devel-2.6.26-2.1.2.8.el5_6.2.ppc.rpm libxml2-devel-2.6.26-2.1.2.8.el5_6.2.ppc64.rpm libxml2-python-2.6.26-2.1.2.8.el5_6.2.ppc.rpm
s390x: libxml2-2.6.26-2.1.2.8.el5_6.2.s390.rpm libxml2-2.6.26-2.1.2.8.el5_6.2.s390x.rpm libxml2-debuginfo-2.6.26-2.1.2.8.el5_6.2.s390.rpm libxml2-debuginfo-2.6.26-2.1.2.8.el5_6.2.s390x.rpm libxml2-devel-2.6.26-2.1.2.8.el5_6.2.s390.rpm libxml2-devel-2.6.26-2.1.2.8.el5_6.2.s390x.rpm libxml2-python-2.6.26-2.1.2.8.el5_6.2.s390x.rpm
x86_64: libxml2-2.6.26-2.1.2.8.el5_6.2.i386.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2012:0104-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2012:0104.html
Issue date: 2012-02-08

Topic

Updated libxml2 packages that fix one security issue are now available forRed Hat Enterprise Linux 5.6 Extended Update Support.The Red Hat Security Response Team has rated this update as havingimportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available fromthe CVE link in the References section.

Topics%20covered

Topics Covered

security advisory security issue update buffer overflow red hat important libxml2

Relevant Releases Architectures

Red Hat Enterprise Linux EUS (v. 5.6 server) - i386, ia64, ppc, s390x, x86_64

Bugs Fixed

771896 - CVE-2011-3919 libxml2: Heap-based buffer overflow when decoding an entity reference with a long name

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