Mozilla Foundation Security Advisory 2011-09
Title: Crash caused by corrupted JPEG image
Announced: March 1, 2011
Reporter: Jordi Chancel
Products: Firefox, Thunderbird
Fixed in: Firefox 3.6.14
Security researcher Jordi Chancel reported that a JPEG image could be constructed that would be decoded incorrectly, causing data to be written past the end of a buffer created to store the image. An attacker could potentially craft such an image that would cause malicious code to be stored in memory and then later executed on a victim's computer.
Firefox 3.5 was not affected by this issue.