USN-2214-3: libxml2 regression
17 June 2014
libxml2 regression
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
- Ubuntu 13.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Summary
USN-2214-1 introduced a regression in libxml2.
Software Description
- libxml2 - GNOME XML library
Details
USN-2214-1 fixed vulnerabilities in libxml2. The upstream fix introduced a number of regressions. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Daniel Berrange 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 versions:
- Ubuntu 14.04 LTS
- libxml2 - 2.9.1+dfsg1-3ubuntu4.3
- Ubuntu 13.10
- libxml2 - 2.9.1+dfsg1-3ubuntu2.3
- Ubuntu 12.04 LTS
- libxml2 - 2.7.8.dfsg-5.1ubuntu4.9
- Ubuntu 10.04 LTS
- libxml2 - 2.7.6.dfsg-1ubuntu1.13
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.