Webmin / Usermin - chooser.cgi script insertion vulnerability

Tuesday, 6 March 2007

Vendor: Webmin
Product: Webmin / Usermin
Affected versions:
Usermin 1.x
Webmin 1.x
Class: Input validation error
Vulnerability: Script insertion

Description:
A vulnerability has been reported in Webmin and Usermin, which can be exploited by malicious, local users to conduct script insertion attacks.

The vulnerability is caused due to an input validation error and can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site when browsing a file system containing a specially crafted filename.

Successful exploitation requires write privileges to the file system.

The vulnerability is reported in the following versions:
* Webmin versions prior to 1.330
* Usermin versions prior to 1.260

Solution:
Webmin:
Update to version 1.330.

Usermin:
Update to version 1.260.

Original advisories:
http://secunia.com/advisories/24321/
http://www.webmin.com/security.html