PT-2013-67: Sensitive Information Disclosure in Serv-U File Server

Vulnerable software

Serv-U File Server
Version: and earlier


Severity level

Severity level: High
Impact: Information Disclosure
Access Vector: Remote

CVSS v2:
Base Score: 7.8
Vector: (AV:N/AC:L/Au:N/C:C/I:N/A:N)

CVE: not assigned

Software description

Serv-U File Server is a Windows and Linux based multi-protocol FTP, HTTP and SFTP file server.

Vulnerability description

The specialists of the Positive Research center have detected a Sensitive Information Disclosure vulnerability in Serv-U File Server.

This vulnerability allows an attacker to find out the system configuration and obtain users’ authentication information via Serv-U variables values.


Login and password output with ID 9590876:

How to fix

Update your sofware up to the latest version

Advisory status

03.10.2013 - Vulnerability details were sent to CERT
19.02.2014 - Vendor releases fixed version and details
31.07.2014 - Public disclosure


The vulnerability was detected by Sergey Bobrov, Positive Research Center (Positive Technologies Company)


Reports on the vulnerabilities previously discovered by Positive Research:

Visionary WAF – Constant innovation