[RHSA-2011:1834-01] Important: libXfont security update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Important: libXfont security update

Advisory ID: RHSA-2011:1834-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1834.html

Issue date: 2011-12-19

CVE Names: CVE-2011-2895

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1. Summary:

 

Updated libXfont packages that fix one security issue are now available for

Red Hat Enterprise Linux 5.6 Extended Update Support.

 

The Red Hat Security Response Team has rated this update as having

important security impact. A Common Vulnerability Scoring System (CVSS)

base score, which gives a detailed severity rating, is available from the

CVE link in the References section.

 

2. Relevant releases/architectures:

 

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

 

3. Description:

 

The libXfont packages provide the X.Org libXfont runtime library. X.Org is

an open source implementation of the X Window System.

 

A buffer overflow flaw was found in the way the libXfont library, used by

the X.Org server, handled malformed font files compressed using UNIX

compress. A malicious, local user could exploit this issue to potentially

execute arbitrary code with the privileges of the X.Org server.

(CVE-2011-2895)

 

Users of libXfont should upgrade to these updated packages, which contain a

backported patch to resolve this issue. All running X.Org server instances

must be restarted for the update to take effect.

 

4. 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

 

5. Bugs fixed (http://bugzilla.redhat.com/):

 

725760 - CVE-2011-2895 libXfont: LZW decompression heap corruption / infinite loop

727624 - CVE-2011-2895 BSD compress LZW decoder buffer overflow

 

6. Package List:

 

Red Hat Enterprise Linux EUS (v. 5.6 server):

 

Source:

libXfont-1.2.2-1.0.3.el5_6.src.rpm

 

i386:

libXfont-1.2.2-1.0.3.el5_6.i386.rpm

libXfont-debuginfo-1.2.2-1.0.3.el5_6.i386.rpm

libXfont-devel-1.2.2-1.0.3.el5_6.i386.rpm

 

ia64:

libXfont-1.2.2-1.0.3.el5_6.ia64.rpm

libXfont-debuginfo-1.2.2-1.0.3.el5_6.ia64.rpm

libXfont-devel-1.2.2-1.0.3.el5_6.ia64.rpm

 

ppc:

libXfont-1.2.2-1.0.3.el5_6.ppc.rpm

libXfont-1.2.2-1.0.3.el5_6.ppc64.rpm

libXfont-debuginfo-1.2.2-1.0.3.el5_6.ppc.rpm

libXfont-debuginfo-1.2.2-1.0.3.el5_6.ppc64.rpm

libXfont-devel-1.2.2-1.0.3.el5_6.ppc.rpm

libXfont-devel-1.2.2-1.0.3.el5_6.ppc64.rpm

 

s390x:

libXfont-1.2.2-1.0.3.el5_6.s390.rpm

libXfont-1.2.2-1.0.3.el5_6.s390x.rpm

libXfont-debuginfo-1.2.2-1.0.3.el5_6.s390.rpm

libXfont-debuginfo-1.2.2-1.0.3.el5_6.s390x.rpm

libXfont-devel-1.2.2-1.0.3.el5_6.s390.rpm

libXfont-devel-1.2.2-1.0.3.el5_6.s390x.rpm

 

x86_64:

libXfont-1.2.2-1.0.3.el5_6.i386.rpm

libXfont-1.2.2-1.0.3.el5_6.x86_64.rpm

libXfont-debuginfo-1.2.2-1.0.3.el5_6.i386.rpm

libXfont-debuginfo-1.2.2-1.0.3.el5_6.x86_64.rpm

libXfont-devel-1.2.2-1.0.3.el5_6.i386.rpm

libXfont-devel-1.2.2-1.0.3.el5_6.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

 

7. References:

 

https://www.redhat.com/security/data/cve/CVE-2011-2895.html

https://access.redhat.com/security/updates/classification/#important

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2011 Red Hat, Inc.

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