The Magick_png_malloc function in coders/png.c in GraphicsMagick 6.7.8-6 does not use the proper variable type for the allocation size, which might allow remote attackers to cause a denial of service (crash) via a crafted PNG file that triggers incorrect memory allocation.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.mandriva.com/security/advisories?name=MDVSA-2012:165 | vendor advisory |
| http://graphicsmagick.hg.sourceforge.net/hgweb/graphicsmagick/graphicsmagick/rev/d6e469d02cd2 | patch exploit |
| http://secunia.com/advisories/50090 | third party advisory vendor advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/77259 | vdb entry |
| http://lists.opensuse.org/opensuse-updates/2013-03/msg00102.html | vendor advisory |
| http://www.securityfocus.com/bid/54716 | vdb entry |
| https://bugzilla.redhat.com/show_bug.cgi?id=844105 | patch |