CVE-2016-5323

Source
Severity Low
Remote Yes
Type Denial of service
Description
When using the tiffcrop command and a crafted TIFF image, the function _TIFFFax3fill() runs without checking the value of the divisor and causes a divide by zero flaw. Attackers can exploit this issue to cause a denial of service.
Group Package Affected Fixed Severity Status Ticket
AVG-86 lib32-libtiff 4.0.6-2 4.0.7-1 Critical Fixed
AVG-85 libtiff 4.0.6-2 4.0.7-1 Critical Fixed
Date Advisory Group Package Severity Description
25 Nov 2016 ASA-201611-27 AVG-86 lib32-libtiff Critical multiple issues
25 Nov 2016 ASA-201611-26 AVG-85 libtiff Critical multiple issues
References
http://seclists.org/oss-sec/2016/q2/548
http://bugzilla.maptools.org/show_bug.cgi?id=2559#c3
Notes
Reproducer http://bugzilla.maptools.org/attachment.cgi?id=659

FIXED:
2016-07-11 Even Rouault <even.rouault at spatialys.com>
tools/tiffcrop.c: Avoid access outside of stack allocated array on a tiled separate TIFF with more than 8 samples per pixel.     
Reported by Kaixiang Zhang of the Cloud Security Team, Qihoo 360
(CVE-2016-5321 / CVE-2016-5323 , bugzilla #2558 / #2559)