Ubuntu Security Notice 1447-1 - 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.
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Ubuntu Security Notice USN-1447-1
May 21, 2012
libxml2 vulnerability
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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