SMTP proxy in WatchGuard Firebox (2500 and 4500) 4.5 and 4.6 allows a remote attacker to bypass firewall filtering via a base64 MIME encoded email attachment whose boundary name ends in two dashes.
| Software | From | Fixed in |
|---|---|---|
| watchguard / firebox_2500 | 4.6 | 4.6.x |
| watchguard / firebox_4500 | 4.5 | 4.5.x |
| watchguard / firebox_2500 | 4.5 | 4.5.x |
| watchguard / firebox_4500 | 4.6 | 4.6.x |