libxml2 2.9.0 and earlier allows context-dependent attackers to cause a denial of service (CPU and memory consumption) via an XML file containing an entity declaration with long replacement text and many references to this entity, aka "internal entity expansion" with linear complexity. Per http://www.ubuntu.com/usn/USN-1782-1/ "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"
Per http://lists.opensuse.org/opensuse-updates/2013-03/msg00112.html "http://lists.opensuse.org/opensuse-updates/2013-03/msg00112.html"
Publication date: Fri, 26 Apr 2013 04:55:00 +0000