PR07-13: Cross-site Scripting / HTML injection on F5 FirePass 4100 SSL VPN 'download_plugin.php3' server-side script
Date Found: 19th June 2007
Successfully tested on: version 5.5.2
F5 Networks has confirmed the following versions to be vulnerable:
FirePass versions 5.4 - 5.5.2
FirePass versions 6.0 - 6.0.1
Description:
F5 Networks FirePass 4100 SSL VPN is vulnerable to XSS within the "backurl"
parameter processed by the "download_plugin.php3" server-side script.
No authentication is required to exploit this vulnerability.
Consequences:
An attacker may be able to cause execution of malicious scripting code in the
browser of a user who visits a specially-crafted URL to an F5 Firepass device,
or visits a malicious page that makes a request to such URL. Such code would
run within the security context of the target domain.
This type of attack can result in non-persistent defacement of the target site,
or the redirection of confidential information (i.e. admin session IDs) to
unauthorised third parties.
Severity: Medium/High
Credits: Jan Fry [jan.fry [at] procheckup.com] and Adrian Pastor [adrian.pastor
[at] procheckup.com] of ProCheckUp Ltd
Fix:
F5 Networks has issued SOL7498:
https://support.f5.com/kb/en-us/solutions/public/7000/400/sol7498.html
More information, including proof of concept can be found on:
http://www.procheckup.com/Vulnerability_PR07-13.php