Security researcher pa_kt reported a flaw via TippingPoint's Zero Day Initiative that an integer overflow is possible when calculating the length for a Javascript string concatenation, which is then used for memory allocation. This results in a buffer overflow, leading to a potentially exploitable memory corruption. In general these flaws cannot be exploited through email in the Thunderbird and SeaMonkey products because scripting is disabled, but are potentially a risk in browser or browser-like contexts in those products. External Reference: http://www.mozilla.org/security/announce/2013/mfsa2013-12.html Acknowledgements: Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges pa_kt as the original reporter.
This issue has been addressed in following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Via RHSA-2013:0145 https://rhn.redhat.com/errata/RHSA-2013-0145.html
This issue has been addressed in following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Via RHSA-2013:0144 https://rhn.redhat.com/errata/RHSA-2013-0144.html