Security researcher Arthur Gerkis, via TippingPoint's Zero Day Initiative, reported a use-after-free during image processing from sites with specific content types in concert with the imgRequestProxy function. This causes a potentially exploitable crash. In general this flaw cannot be exploited through email in the Thunderbird and Seamonkey products because scripting is disabled in mail, but is potentially a risk in browser or browser-like contexts. External Reference: http://www.mozilla.org/security/announce/2014/mfsa2014-08.html Acknowledgements: Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Arthur Gerkis as the original reporter.
This issue has been addressed in following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Via RHSA-2014:0133 https://rhn.redhat.com/errata/RHSA-2014-0133.html
This issue has been addressed in following products: Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 5 Via RHSA-2014:0132 https://rhn.redhat.com/errata/RHSA-2014-0132.html