Mozilla security researcher Christian Holler discovered several issues while fuzzing the parsing of SSL certificates. Two of these issues were a result of using characters that are not UTF-8 in certificates when various functions expected all strings to be UTF-8 format. The third issue was a result of using characters that were not ASCII in certificates while a function expected only ASCII formatted text. All of these issues causes the certificates to be incorrectly parsed, leading to a potential inability to use valid SSL certificates.



External Reference:

http://www.mozilla.org/security/announce/2014/mfsa2014-65.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Christian Holler as the original reporter.

Statement:

This issue does not affect the version of thunderbird as shipped with Red Hat Enterprise Linux 5 and 6, or the version of firefox as shipped with Red Hat Enterprise Linux 5, 6, and 7.