Mozilla developer David Keeler reported that the crypto.generateCRFMRequest method did not correctly validate the key type of the KeyParams argument when generating ec-dual-use requests. This could lead to a crash and a denial of service (DOS) attack. External Reference: http://www.mozilla.org/security/announce/2014/mfsa2014-18.html Acknowledgements: Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges David Keeler as the original reporter. Statement: This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5 and 6