pam_google_authenticator.c in the PAM module in Google Authenticator before 1.0 requires user-readable permissions for the secret file, which allows local users to bypass intended access restrictions and discover a shared secret via standard filesystem operations, a different vulnerability than CVE-2013-0258.

References

• https://nvd.nist.gov/vuln/detail/CVE-2012-6140
• https://bugzilla.redhat.com/show_bug.cgi?id=953505
• https://code.google.com/p/google-authenticator/source/detail?r=c3414e9857ad64e52283f3266065ef3023fc69a8
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666129
• http://openwall.com/lists/oss-security/2013/04/18/10