PIL/IcnsImagePlugin.py in Python Imaging Library (PIL) and Pillow before 2.3.2 and 2.5.x before 2.5.2 allows remote attackers to cause a denial of service via a crafted block size.
http://lists.opensuse.org/opensuse-updates/2015-04/msg00056.html
http://secunia.com/advisories/59825
http://www.debian.org/security/2014/dsa-3009
https://github.com/python-pillow/Pillow/commit/205e056f8f9b06ed7b925cf8aa0874bc4aaf8a7d