Security researcher ilxu1a reported, through HP Zero Day Initiative's Pwn2Own contest, a flaw in Mozilla's implementation of typed array bounds checking in JavaScript just-in-time compilation (JIT) and its management of bounds checking for heap access. This flaw can be leveraged into the reading and writing of memory allowing for arbitary code execution on the local system. External Reference: https://www.mozilla.org/en-US/security/advisories/mfsa2015-29 Acknowledgements: Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges ilxu1a as the original reporter. Statement: This issue does not affect the version of thunderbird package as shipped with Red Hat Enterprise Linux 5, 6 and 7.
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Via RHSA-2015:0718 https://rhn.redhat.com/errata/RHSA-2015-0718.html