Plugin ID | 213 |
Plugin name | Cat Soft Serv-U FTP server prior 2.5f zero string denial of service |
Plugin filename | Cat Soft Serv-U FTP server prior 2.5f zero string denial of service.plugin |
Plugin filesize | 3280 bytes |
Plugin family | FTP |
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 | 2004/09/13 |
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 | 1.1 |
Plugin changelog | Corrected the plugin structure and added the accuracy values in 1.1 |
Plugin protocol | tcp |
Plugin port | 21 |
Plugin procedure detection | open|sleep|close|pattern_exists 220 Serv-U FTP-Server v2.[0-5]* |
Plugin detection accuracy | 80 |
Plugin comment | This plugin is not as accurate as like the Nessus plugin because we do not exploit the potential flaw here. It is strange because the SecurityFocus BID could not be found but this one is saved in the Nessus plugin too. |
Bug affected | Serv-U FTP server prior 2.5f |
Bug not affected | Serv-U FTP server newer than 2.5f or other ftp servers |
Bug vulnerability class | Denial Of Service |
Bug description | The Serv-U FTP server is a well-known ftp server for Windows operating systems. It is possible to crash the server by sending more than 5'000 zeros to the target. This vulnerability allows an attacker to prevent you from sharing data through FTP and may even crash this host. |
Bug solution | If the ftp server is not used it should be de-installed or de-activated. Install the newest patch or bugfix to solve the problem or upgrade to the latest software version which is not vulnerable anymore. Additionally limit unwanted connections and communications with firewalling. |
Bug fixing time | Approx. 20 minutes |
Bug exploit availability | Yes |
Bug exploit url | http://www.securityfocus.com/bid/1543/exploit/ |
Bug remote | Yes |
Bug local | Yes |
Bug severity | Medium |
Bug popularity | 7 |
Bug simplicity | 7 |
Bug impact | 8 |
Bug risk | 7 |
Bug Nessus risk | High |
Bug check tools | Nessus is able to same check and exploit the vulnerability with a denial of service plugin. |
Source CVE | CVE-2000-0837 |
Source SecurityFocus BID | 1543 |
Source Nessus ID | 10488 |
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 |