LibTIFF in Red Hat Enterprise Linux (RHEL) 3 on x86_64 platforms, as used in tiff2rgba, attempts to process image data even when the required compression functionality is not configured, which allows remote attackers to cause a denial of service via a crafted TIFF image, related to "downsampled OJPEG input."
https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-2602
https://bugzilla.redhat.com/show_bug.cgi?id=583081
http://www.vupen.com/english/advisories/2010/1761