USN-1782-1: libxml2 vulnerability

Ubuntu Security Notice USN-1782-1

28th March, 2013

libxml2 vulnerability

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

  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS

Summary

libxml2 could be made to hang if it received specially crafted input.

Software description

  • libxml2 - GNOME XML library

Details

It was discovered that libxml2 incorrectly handled XML entity expansion.
An attacker could use this flaw to cause libxml2 to consume large amounts
of resources, resulting in a denial of service.

Update instructions

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

Ubuntu 12.10:
libxml2 2.8.0+dfsg1-5ubuntu2.2
Ubuntu 12.04 LTS:
libxml2 2.7.8.dfsg-5.1ubuntu4.4
Ubuntu 11.10:
libxml2 2.7.8.dfsg-4ubuntu0.6
Ubuntu 10.04 LTS:
libxml2 2.7.6.dfsg-1ubuntu1.8
Ubuntu 8.04 LTS:
libxml2 2.6.31.dfsg-2ubuntu1.12

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2013-0338