Postfix 1.1.11 and earlier allows remote attackers to use Postfix to conduct bounce scans or DDos attacks of other hosts via an email address to the local host containing the target IP address and service name followed by a ! string, which causes Postfix to attempt to use SMTP to communicate with the target on the associated port.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Postfix | Wietse_venema | 1.0.21 (including) | 1.0.21 (including) |
| Postfix | Wietse_venema | 1.1.11 (including) | 1.1.11 (including) |
| Postfix | Wietse_venema | 1999-09-06 (including) | 1999-09-06 (including) |
| Postfix | Wietse_venema | 1999-12-31 (including) | 1999-12-31 (including) |
| Postfix | Wietse_venema | 2000-02-28 (including) | 2000-02-28 (including) |
| Postfix | Wietse_venema | 2001-11-15 (including) | 2001-11-15 (including) |
| Linux | Conectiva | 7.0 (including) | 7.0 (including) |
| Linux | Conectiva | 8.0 (including) | 8.0 (including) |
| Red Hat Linux 7.3 | RedHat | * | |
| Red Hat Linux 8.0 | RedHat | * | |
| Red Hat Linux 9 | RedHat | * |