USN-1587-1: libxml2 vulnerability

Ubuntu Security Notice USN-1587-1

27th September, 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


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


Juri Aedla discovered that libxml2 incorrectly handled certain memory
operations. 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 version:

Ubuntu 12.04 LTS:
libxml2 2.7.8.dfsg-5.1ubuntu4.2
Ubuntu 11.10:
libxml2 2.7.8.dfsg-4ubuntu0.4
Ubuntu 11.04:
libxml2 2.7.8.dfsg-2ubuntu0.5
Ubuntu 10.04 LTS:
libxml2 2.7.6.dfsg-1ubuntu1.6
Ubuntu 8.04 LTS:
libxml2 2.6.31.dfsg-2ubuntu1.10

To update your system, please follow these instructions:

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