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Cerberus FTP Server web interface cross-site request forgery vulnerability

Vulnerability Note VU#989684

Original Release Date: 2012-10-04 | Last Revised: 2012-10-04

Overview

The Cerberus FTP Server web interface contains a cross-site request forgery vulnerability

Description

CWE-352: Cross-Site Request Forgery (CSRF):
The Cerberus FTP Server web interface is vulnerable to CSRF using the HTTP POST method in the <targetip>:10000/usermanager/users/modify. The application has web based administration which allows authorized administrators to perform certain actions via HTTP requests without making proper validity checks to verify the source of the requests.This can be exploited to add, delete, modify or stop the FTP service, for example to add a user.

Impact

An attacker with access to the Cerberus FTP Server web interface can conduct a cross-site scripting, cross-site request forgery which could be used to result in information leakage, privilege escalation, and/or denial of service.

Solution

Update

The vendor has stated that these vulnerabilities have been addressed in Cerberus FTP Server version 5.0.5. Users are advised to upgrade to version 5.0.5 or higher.

Restrict access

As a general good security practice, only allow connections from trusted hosts and networks. Note that restricting access does not prevent CSRF attacks since the attack comes as an HTTP request from a legitimate user's host. Restricting access would prevent an attacker from accessing the Cerberus FTP Server web interface using stolen credentials from a blocked network location.

Vendor Information

989684
 
Affected   Unknown   Unaffected

Cerberus LLC

Notified:  September 14, 2012 Updated:  September 24, 2012

Status

  Affected

Vendor Statement

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

Vendor Information

The vendor has stated that these vulnerabilities have been addressed in Cerberus FTP Server version 5.0.5. Users are advised to upgrade to version 5.0.5 or higher.


CVSS Metrics

Group Score Vector
Base 3.8 AV:L/AC:H/Au:S/C:C/I:N/A:N
Temporal 3.0 E:POC/RL:OF/RC:C
Environmental 0.9 CDP:L/TD:L/CR:ND/IR:ND/AR:ND

References

Credit

Thanks to redro0cky of Beijing Leadsec Technology Co., Ltd for reporting this vulnerability.

This document was written by Michael Orlando.

Other Information

CVE IDs: CVE-2012-2999
Date Public: 2012-09-26
Date First Published: 2012-10-04
Date Last Updated: 2012-10-04 11:33 UTC
Document Revision: 9

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