| Plugin ID | 132 |
| Plugin name | Telnet guest account empy password |
| Plugin filename | Telnet guest account empy password.plugin |
| Plugin filesize | 2776 bytes |
| Plugin family | Backdoors |
| 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 | 2004/09/02 |
| 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 | 2005/01/15 |
| Plugin version | 1.2 |
| Plugin changelog | Corrected the plugin structure and added the accuracy values in 1.1. Added a needed sleep before sending the first data in 1.2 |
| Plugin protocol | tcp |
| Plugin port | 23 |
| Plugin procedure detection | open|sleep|send guest\n|sleep|send \n|sleep|close|pattern_exists Welcome |
| Plugin detection accuracy | 90 |
| Plugin comment | This plugin was written with the ATK Attack Editor and was inspired by Nessus plugin. |
| Bug affected | Some Telnet environments |
| Bug not affected | Hardened Telnet environments |
| Bug vulnerability class | Weak Authentication |
| Bug description | The account guest has no password set. An attacker may use it to gain further privileges on this system |
| Bug solution | The telnet service, if not needed, should be disabled (in /etc/inetd.conf) or if possible firewalled. Set a strong password for every account. |
| Bug fixing time | Approx. 30 minutes |
| Bug exploit availability | Yes |
| Bug exploit url | http://www.nessus.org |
| Bug remote | Yes |
| Bug local | Yes |
| Bug severity | High |
| Bug popularity | 9 |
| Bug simplicity | 9 |
| Bug impact | 9 |
| Bug risk | 8 |
| Bug Nessus risk | High |
| Bug check tools | Nessus and ATK is able to do the same and further check. |
| Source CVE | CAN-1999-0502 |
| Source Nessus ID | 11240 |
| 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 |