SUSE Security Announcement SUSE-SA:2006:055: If an RSA key with exponent 3 is used it may be possible to forge a PKCS verify the certificate if they are not checking for excess data in the RSA exponentiation result of the signature.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/50364/SUSE-SA-2006-055.txt
Source: https://packetstormsecurity.com/files/50364/SUSE-SA-2006-055.txt.html