PT-2013-70: Multiple Cross-Site Scripting (XSS) in Serv-U File Server

Vulnerable software

Serv-U File Server
Version: and earlier


Severity level

Severity level: Medium
Impact: Cross-Site Scripting
Access Vector: Remote

CVSS v2:
Base Score: 4.3
Vector: (AV:N/AC:M/Au:N/C:N/I:P/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 Multiple Cross-Site Scripting vulnerabilities in Serv-U File Server.

The application does not perform sufficient validation of parameters, which are sent by client and used in HTM scripts. This vulnerability allows an attacker to execute an arbitrary JavaScript code in user's browser session, conduct content spoofing or redirect traffic to an arbitrary resource via tricking a user into clicking a specially crafted link.


How to fix

Update your sofware up to the latest version

Advisory status

02.10.2013 - Vulnerability details were sent to CERT
03.06.2014 - 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: