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WS_FTP Server < 5.04 Hotfix 1 Path Parsing Remote DoS

High

Synopsis

The remote host is vulnerable to a Denial of Service (DoS) attack.

Description

This host is running a vulnerable version of WS_FTP Server. Versions up to and including 5.0.2 are reported prone to a remote denial of service in the processing of the CD command. By providing a malformed path containing '../' characters to the CD command, an attacker may exhaust server resources.

Solution

Upgrade to version 5.04 Hotfix 1 or higher.