225
TYPSoft FTP up to 1.10 ntdll.dll empty user name denial of service
FTP
2004/09/14
Marc Ruef
marc dot ruef at computec dot ch
http://www.computec.ch
computec.ch
Marc Ruef
marc dot ruef at computec dot ch
http://www.computec.ch
computec.ch
2004/11/13
1.1
Corrected the plugin structure and added the accuracy values in 1.1
tcp
21
open|sleep|close|pattern_exists *TYPSoft FTP Server 0.#* OR *TYPSoft FTP Server 1.0#* OR *TYPSoft FTP Server 1.10*
80
Check is inspired by the Nessus plugin (see Nessus ID listed in the sources).
intuit bug_hunter
intuit at linuxmail dot org
http://code.unixserver.at
2004/02/04
http://www.securityfocus.com/archive/1/352530
TYPSoft FTP up to 1.10
TYPSoft FTP newer than 1.10 or other ftp servers
Configuration
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.
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.
Approx. 40 minutes
Yes
http://www.securityfocus.com/bid/9573/exploit/
Yes
Yes
Medium
7
7
7
7
High
Nessus is able to do and exploit the same check.
9573
6613
14707
Hacking Exposed: Network Security Secrets & Solutions, Stuart McClure, Joel Scambray and George Kurtz, February 25, 2003, 4th Edition, McGraw-Hill Osborne Media, ISBN 0072227427
http://www.typsoft.com
