Puppet Enterprise Web Interface Open Redirect

`[+] Credits: John Page aka hyp3rlinx  
  
[+] Website: hyp3rlinx.altervista.org  
  
[+] Source:  
http://hyp3rlinx.altervista.org/advisories/PUPPET-AUTHENTICATION-REDIRECT.txt  
  
[+] ISR: ApparitionSec  
  
  
  
Vendor:  
==============  
www.puppet.com  
  
  
  
Product:  
================================  
Puppet Enterprise Web Interface  
Version < 2016.4.0  
  
Puppet Enterprise is the leading platform for automatically delivering,  
operating and securing your infrastructure.  
  
  
Vulnerability Type:  
=========================  
Authentication Redirect  
  
  
  
CVE Reference:  
==============  
CVE-2016-5715  
  
  
  
Vulnerability Details:  
=====================  
  
When logging into Puppet Enterprise Web Interface, users can be redirected  
to attacker controlled servers, if a user logs in  
using an attacker supplied authentication link it can result in credential  
theft etc.  
  
Fixed in version 2016.4.0  
  
References:  
https://puppet.com/security/cve/cve-2016-5715  
  
  
Exploit code(s):  
===============  
  
Bypass character filters you need to pass double forward slashes "//" or  
the redirect will fail.  
  
https://victim-puppet-server/auth/login?redirect=//attacker-server  
  
  
  
Disclosure Timeline:  
======================================  
Vendor Notification: August 23, 2016  
Vendor Acknowledgement: August 23, 2016  
Vendor Releases Fix: in version 2016.4.0  
October 17, 2016 : Public Disclosure  
  
  
  
  
Exploitation Technique:  
=======================  
Remote  
  
  
  
Severity Level:  
================  
Medium  
  
  
  
  
[+] Disclaimer  
The information contained within this advisory is supplied "as-is" with no  
warranties or guarantees of fitness of use or otherwise.  
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 accepts no responsibility  
for any damage caused by the use or misuse of this information. The author  
prohibits any malicious use of security related information  
or exploits by the author or elsewhere.  
  
hyp3rlinx  
`