Plugin ID | 225 |
Plugin name | TYPSoft FTP up to 1.10 ntdll.dll empty user name denial of service |
Plugin filename | TYPSoft FTP up to 1.10 ntdll.dll empty user name denial of service.plugin |
Plugin filesize | 3640 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 | 2004/09/14 |
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 *TYPSoft FTP Server 0.#* OR *TYPSoft FTP Server 1.0#* OR *TYPSoft FTP Server 1.10* |
Plugin detection accuracy | 80 |
Plugin comment | Check is inspired by the Nessus plugin (see Nessus ID listed in the sources). |
Bug published name | intuit bug_hunter |
Bug published email | intuit at linuxmail dot org |
Bug published web | http://code.unixserver.at |
Bug published date | 2004/02/04 |
Bug advisory | http://www.securityfocus.com/archive/1/352530 |
Bug affected | TYPSoft FTP up to 1.10 |
Bug not affected | TYPSoft FTP newer than 1.10 or other ftp servers |
Bug vulnerability class | Configuration |
Bug description | The remote host seems to be running TYPSoft FTP, a small FTP server. The software version up to 1.10 has a denial of service vulnerability if an empty user name is given during the account authentication. An attacker may crash the remote server and probably 100 % employment of computer resources. |
Bug solution | The server should be deactivated or de-installed if not necessary. If this is not possible, you should upgrade the software to the latest version. To make it harder to find the server the daemon could be configured to listen at another port (e.g. 8021). Try to prevent unwanted connection attempts by filtering traffic with firewalling. Alternation of the application banner can confuse an attacker and let him determine the wrong software. |
Bug fixing time | Approx. 40 minutes |
Bug exploit availability | Yes |
Bug exploit url | http://www.securityfocus.com/bid/9573/exploit/ |
Bug remote | Yes |
Bug local | Yes |
Bug severity | Medium |
Bug popularity | 7 |
Bug simplicity | 7 |
Bug impact | 7 |
Bug risk | 7 |
Bug Nessus risk | High |
Bug check tools | Nessus is able to do and exploit the same check. |
Source SecurityFocus BID | 9573 |
Source OSVDB ID | 6613 |
Source Nessus ID | 14707 |
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.typsoft.com |