CVE-2013-4589
The ExportAlphaQuantumType function in export.c in GraphicsMagick before 1.3.18 might allow remote attackers to cause a denial of service (crash) via vectors related to exporting the alpha of an 8-bit RGBA image.
Date published : 2013-11-23
http://www.securityfocus.com/bid/63002
http://sourceforge.net/p/graphicsmagick/code/ci/1a2d7a38363f7f23b63d626887d22d39c7240144/