Integer overflow, leading to heap-based buffer overflow flaw was found in the GIMP's GIF (Graphics Interchange Format) image file plug-in. An attacker could create a specially-crafted GIF image file that, when opened, could cause the GIF plug-in to crash or, potentially, execute arbitrary code with the privileges of the user running the GIMP.
Acknowledgements:
Red Hat would like to thank Matthias Weckbecker of the SUSE Security Team for reporting this issue.