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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

Overview

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

Description

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.

Impact

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

Solution

Upgrade to version 2.1.7 or later of CrushFTP at:

http://www.crushftp.com

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

Vendor Information

110803
Expand all

Ben Spink

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

Status

  Vulnerable

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.

Addendum

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

References

Credit

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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