Integer overflow in the ReadImage function in plug-ins/common/file-gif-load.c in the GIF image format plug-in in GIMP 2.8.x and earlier allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via crafted height and len properties in a GIF image file, which triggers a heap-based buffer overflow. NOTE: some of these details are obtained from third party information.

A heap-based buffer overflow flaw, leading to invalid free, was found in the way KISS CEL file format plug-in of Gimp, the GNU Image Manipulation Program, performed loading of certain palette files. A remote attacker could provide a specially-crafted KISS palette file that, when opened in Gimp would cause the CEL plug-in to crash or, potentially, execute arbitrary code with the privileges of the user running the gimp executable.

Issue found by: Murray McAllister, Red Hat Security Response Team