NGC Active FTPServer 2002 Multiple Command Remote DoS

critical Nessus Plugin ID 11757



The remote FTP server is affected by a remote denial of service vulnerability.


The remote host is running Active FTP server, a shareware FTP server for Windows-based systems.

There is a flaw in the version of ActiveFTP which may allow an attacker to crash this service remotely by sending an overly long argument to various FTP commands (USER, CWD, and more). The attack can only be performed without authentication through the USER command.

A successful exploit will result in a denial of service and may potentially allow the attacker to execute arbitrary code in the context of the affected application.


There is no known solution at this time.

See Also

Plugin Details

Severity: Critical

ID: 11757

File Name: activeftp_overflows.nasl

Version: 1.18

Type: remote

Family: FTP

Published: 6/18/2003

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information


Risk Factor: Critical

Base Score: 10

Temporal Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Information

Exploit Ease: No known exploits are available

Reference Information

BID: 7900

Secunia: 9036