Integer overflow in the TIFFroundup macro in LibTIFF before 3.9.3 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted TIFF file that triggers a buffer overflow.
https://bugzilla.redhat.com/show_bug.cgi?id=601274
https://bugs.launchpad.net/ubuntu/+source/tiff/+bug/589565
http://www.vupen.com/english/advisories/2011/0621
http://www.vupen.com/english/advisories/2011/0204
http://www.vupen.com/english/advisories/2010/1638
http://www.ubuntu.com/usn/USN-954-1
http://www.remotesensing.org/libtiff/v3.9.3.html
http://www.mandriva.com/security/advisories?name=MDVSA-2011:043
http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.596424
http://security.gentoo.org/glsa/glsa-201209-02.xml
http://secunia.com/advisories/50726
http://secunia.com/advisories/40381
http://secunia.com/advisories/40181