Red Hat Bugzilla – Bug 1023840
CVE-2013-5596 Mozilla: Writing to cycle collected object during image decoding (MFSA 2013-97)
Last modified: 2013-10-29 13:12:57 EDT
Mozilla community member Ezra Pool reported a potentially exploitable crash on extremely large pages. This was caused when a cycle collected image object was released on the wrong thread during decoding, creating a race condition.
In general this flaw cannot be exploited through email in the Thunderbird and Seamonkey products because scripting is disabled, but is potentially a risk in browser or browser-like contexts.
Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Ezra Pool as the original reporter.
This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5 and 6