Provide references for CVE-2012-6140.
Where can I find more information about CVE-2012-6140?
References are available at: https://bugzilla.redhat.com/show_bug.cgi?id=953505, https://code.google.com/p/google-authenticator/source/detail?r=c3414e9857ad64e52283f3266065ef3023fc69a8, http://openwall.com/lists/oss-security/2013/04/18/10, http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666129.