Updated graphicsmagick packages fix security vulnerability:
GraphicsMagick before 1.3.18 is found to have a vulnerability which can be exploited by malicious people to cause a Denial of Service (DoS). The vulnerability is caused due to an error within the "ExportAlphaQuantumType()" function found in magick/export.c when exporting 8-bit RGBA images, which can be exploited to cause a crash (CVE-2013-4589).