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CERT Coordination Center

CrushFTP Server does not adequately filter user input thereby permitting directory traversal

Vulnerability Note VU#110803

Original Release Date: 2001-12-20 | Last Revised: 2001-12-20


CrushFTP allows access to files outside the FTP root directory through directory traversal.


CrushFTP is a Java-based FTP server available for Linux, Mac OS, and Windows. CrushFTP can be configured to limit access to files under a designated FTP root directory. However, CrushFTP allows an attacker to get files outside this directory through '../' directory traversal.


CrushFTP allows an attacker to see any file in the filesystem, including potentially sensitive and critical system files.


Upgrade to version 2.1.7 or later of CrushFTP at:

Use chroot if available on your system, to limit the scope of CrushFTP's access to the filesystem.

Vendor Information

Affected   Unknown   Unaffected

Ben Spink

Notified:  August 29, 2001 Updated:  November 17, 2001



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A



Thanks to Joe Testa for discovering this vulnerability.

This document was written by Shawn Van Ittersum.

Other Information

CVE IDs: CVE-2001-0582
Severity Metric: 0.11
Date Public: 2001-05-23
Date First Published: 2001-12-20
Date Last Updated: 2001-12-20 16:50 UTC
Document Revision: 12

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