| Plugin ID | 5 |
| Plugin name | Sendmail detection |
| Plugin filename | Sendmail detection.plugin |
| Plugin filesize | 2736 bytes |
| Plugin family | SMTP |
| Plugin created name | Marc Ruef |
| Plugin created email | marc dot ruef at computec dot ch |
| Plugin created web | http://www.computec.ch |
| Plugin created company | computec.ch |
| Plugin created date | 2003/11/10 |
| Plugin updated name | Marc Ruef |
| Plugin updated email | marc dot ruef at computec dot ch |
| Plugin updated web | http://www.computec.ch |
| Plugin updated company | computec.ch |
| Plugin updated date | 2004/11/13 |
| Plugin version | 2.0 |
| Plugin changelog | Title and filename changed in version 1.3. Corrected the plugin structure and added the accuracy values in 1.4. Improved the pattern matching and added the changelog in 2.0 |
| Plugin protocol | tcp |
| Plugin port | 25 |
| Plugin procedure detection | open|sleep|close|pattern_exists 220 *Sendmail* |
| Plugin detection accuracy | 85 |
| Plugin comment | This plugin was written with the ATK Attack Editor. |
| Bug affected | Sendmail mail transfer agents |
| Bug not affected | All other mail transfer agents |
| Bug vulnerability class | Configuration |
| Bug description | An attacker who is able to get a direct connection to the port can identify the banner of this mail server as Sendmail. By this knowledge further enumerations and attacks are possible. |
| Bug solution | A service if not needed should be de-installed or disabled. If this is not possible, an access control list (ACL) with firewalling should be applied to this port. Change the application banner to confuse attackers. |
| Bug fixing time | 30 minutes |
| Bug exploit availability | Yes |
| Bug remote | Yes |
| Bug local | Yes |
| Bug severity | Low |
| Bug popularity | 8 |
| Bug simplicity | 8 |
| Bug impact | 4 |
| Bug risk | 6 |
| Bug check tools | There are numerous vulnerabilities in (old) Sendmail versions. Most of them are implemented as checks in the well-known security scanners. |
| Source Literature | Hacking Exposed: Network Security Secrets & Solutions, Stuart McClure, Joel Scambray and George Kurtz, February 25, 2003, 4th Edition, McGraw-Hill Osborne Media, ISBN 0072227427 |
| Source Misc. | http://www.computec.ch |