Articles / Ubuntu: New libxml2 package…

Ubuntu: New libxml2 packages fix security vulnerabilities

Juri Aedla discovered that libxml2 contained an off by one error in its XPointer functionality. If a user or application linked against libxml2 were tricked into opening a specially crafted XML file, an attacker could cause the application to crash or possibly execute arbitrary code with the privileges of the user invoking the program. Updated packages are available from security.ubuntu.com.

==========================================================================
Ubuntu Security Notice USN-1447-1
May 21, 2012

libxml2 vulnerability
==========================================================================

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

Applications using libxml2 could be made to crash or run programs as your
login if they opened a specially crafted file.

Software Description:
- libxml2: GNOME XML library

Details:

Juri Aedla discovered that libxml2 contained an off by one error in its
XPointer functionality. If a user or application linked against libxml2
were tricked into opening a specially crafted XML file, an attacker could
cause the application to crash or possibly execute arbitrary code with the
privileges of the user invoking the program.

Update instructions:

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

Ubuntu 12.04 LTS:
 libxml2                         2.7.8.dfsg-5.1ubuntu4.1

Ubuntu 11.10:
 libxml2                         2.7.8.dfsg-4ubuntu0.3

Ubuntu 11.04:
 libxml2                         2.7.8.dfsg-2ubuntu0.4

Ubuntu 10.04 LTS:
 libxml2                         2.7.6.dfsg-1ubuntu1.5

Ubuntu 8.04 LTS:
 libxml2                         2.6.31.dfsg-2ubuntu1.9

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

References:
 http://www.ubuntu.com/usn/usn-1447-1
 CVE-2011-3102

Package Information:
 https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-5.1ubuntu4.1
 https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-4ubuntu0.3
 https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-2ubuntu0.4
 https://launchpad.net/ubuntu/+source/libxml2/2.7.6.dfsg-1ubuntu1.5
 https://launchpad.net/ubuntu/+source/libxml2/2.6.31.dfsg-2ubuntu1.9
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