Ubuntu Security Notice USN-2389-1
27th October, 2014
libxml2 vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Summary
libxml2 could be made to consume resources if it processed a specially
crafted file.
Software description
- libxml2
– GNOME XML library
Details
It was discovered that libxml2 would incorrectly perform entity
substitution even when requested not to. If a user or automated system were
tricked into opening a specially crafted document, an attacker could
possibly cause resource consumption, resulting in a denial of service.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.04 LTS:
-
libxml2
2.9.1+dfsg1-3ubuntu4.4
- Ubuntu 12.04 LTS:
-
libxml2
2.7.8.dfsg-5.1ubuntu4.11
- Ubuntu 10.04 LTS:
-
libxml2
2.7.6.dfsg-1ubuntu1.15
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.