Ubuntu alert USN-1191-1 (libxfont)

From:
    	     
 
Marc Deslauriers <marc.deslauriers@canonical.com> 
To:
    	     
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
    	     
 
[USN-1191-1] libXfont vulnerability 
Date:
    	     
 
Mon, 15 Aug 2011 09:30:29 -0400
Message-ID:
    	     
 
<1313415029.2596.102.camel@mdlinux>
Archive-link:
    	     
 
Article, Thread
              
==========================================================================
Ubuntu Security Notice USN-1191-1
August 15, 2011

libxfont vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS

Summary:

libXfont could be made to run programs as an administrator if it opened a
specially crafted file.

Software Description:
- libxfont: X11 font rasterisation library

Details:

Tomas Hoger discovered that libXfont incorrectly handled certain malformed
compressed fonts. An attacker could use a specially crafted font file to
cause libXfont to crash, or possibly execute arbitrary code in order to
gain privileges.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.04:
  libxfont1                       1:1.4.3-2ubuntu0.1

Ubuntu 10.10:
  libxfont1                       1:1.4.2-1ubuntu0.1

Ubuntu 10.04 LTS:
  libxfont1                       1:1.4.1-1ubuntu0.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1191-1
  CVE-2011-2895

Package Information:
  https://launchpad.net/ubuntu/+source/libxfont/1:1.4.3-2ub...
  https://launchpad.net/ubuntu/+source/libxfont/1:1.4.2-1ub...
  https://launchpad.net/ubuntu/+source/libxfont/1:1.4.1-1ub...


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