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#VERSION,2.09
# $Id: nikto_httpoptions.plugin 632 2011-02-19 02:49:31Z sullo $
###############################################################################
# Copyright (C) 2006 CIRT, Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 2
# of the License only.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
###############################################################################
# PURPOSE:
# HTTP options check
###############################################################################
sub nikto_httpoptions_init {
my $id = { name => "httpoptions",
full_name => "HTTP Options",
author => "Sullo",
description =>
"Performs a variety of checks against the HTTP options returned from the server.",
hooks => { scan => { method => \&nikto_httpoptions,
weight => 20,
},
},
copyright => "2008 CIRT Inc."
};
return $id;
}
# This just gets the HTTP options & checks 'em out.
# See RFC 2626 for more info...
sub nikto_httpoptions {
return if $mark->{'terminate'};
my ($mark) = @_;
my %headers;
# test for both OPTIONS / and OPTIONS * as they may give different results
(my $res, $content) =
nfetch($mark, "*", "OPTIONS", "", \%headers, "", "httpoptions: OPTIONS *");
my $aoptions = "$headers{'allow'}, ";
my $poptions = "$headers{'public'}, ";
my ($allow_methods, $public_methods);
my $txt = "";
my $dbarray;
$dbarray = init_db("db_httpoptions");
($res, $content) = nfetch($mark, "/", "OPTIONS", "", \%headers, "", "httpoptions: OPTIONS /");
$aoptions .= $headers{'allow'};
$poptions .= $headers{'public'};
foreach my $o (split(/,[ ]?/, $aoptions)) {
$allow_methods .= ", $o" unless ($allow_methods =~ /\b$o\b/ || $o eq '');
}
$allow_methods =~ s/^[ ]?, //;
foreach my $o (split(/,[ ]?/, $poptions)) {
$public_methods .= ", $o" unless ($public_methods =~ /\b$o\b/ || $o eq '');
}
$public_methods =~ s/^[ ]?, //;
# proxy can impose its methods... should actually check this not just warn
if ($CLI{'useproxy'} ne "") { $txt = "(May be proxy's methods, not server's)"; }
%davmethods = ();
if ($allow_methods ne "") {
add_vulnerability($mark, "Allowed HTTP Methods: $allow_methods $txt", 999990, 0);
foreach my $m (split /,? /, $allow_methods) {
my $method = eval_methods($m, "Allow", $dbarray, $mark);
if ($method ne "") { $davmethods{$method} = 1 }
}
}
if ($public_methods ne "") {
add_vulnerability($mark, "Public HTTP Methods: $public_methods $txt", 999985, 0);
foreach my $m (split /,? /, $public_methods) {
my $method = eval_methods($m, "Public", $dbarray, $mark);
if ($method ne "") { $davmethods{$method} = 1 }
}
}
if (scalar(keys(%davmethods)) > 0) {
$message = "WebDAV enabled (";
for my $key (keys %davmethods) {
$message .= "$key ";
}
$message .= "listed as allowed)";
add_vulnerability($mark, "$message", "999977", "0");
}
# Check for other weirdness
# IIS Debug
return if $mark->{'terminate'};
($res, $content) = nfetch($mark, "/", "DEBUG", "", "", "", "httpoptions: DEBUG");
if ($res == 200) {
add_vulnerability(
$mark,
"DEBUG HTTP verb may show server debugging information. See http://msdn.microsoft.com/en-us/library/e8z01xdh%28VS.80%29.aspx for details.",
999972,
0,
"DEBUG"
);
}
# IIS PROPFIND HEADER
return if $mark->{'terminate'};
%headers = ("Host" => "",
"Content-Length" => "0",);
($res, $content) =
nfetch($mark, "/", "PROPFIND", "", \%headers, { noclean => 1 }, "httpoptions: PROPFIND");
if ($res == 207) {
if ($content =~ "<a:href>http://") {
my $ipfound = $content;
$ipfound =~ s/^.*<a:href>//g;
$ipfound =~ s/<\/a:href>.*$//g;
add_vulnerability($mark,
"PROPFIND HTTP verb may show the server's internal IP address: $ipfound",
999973, 13431);
}
}
# Special checks for TRACE/TRACK to see whether its vulnerable
%headers = ("Host" => "Nikto",);
foreach my $method (split(/ /, "TRACE TRACK")) {
# Check for all flavours of HTTP
foreach my $version (split(/ /, "1.0 1.1")) {
return if $mark->{'terminate'};
$request{'whisker'}{'version'} = $version;
($res, $content) =
nfetch($mark, "/", $method, "", \%headers, "", "httpoptions: $method");
if ($res == 200) {
if ($content =~ "Nikto") {
add_vulnerability($mark,
"HTTP $method method is active, suggesting the host is vulnerable to XST",
999971, 877);
# now we know its vulnerable stop testing
last;
}
}
}
}
$request{'whisker'}->{'version'} = $NIKTOCONFIG{'DEFAULTHTTPVER'};
# Now release memory for the dbarray
undef @$dbarray;
return;
}
sub eval_methods {
my $method = $_[0] || return;
my $type = $_[1];
my $dbarray = $_[2];
my $mark = $_[3];
my $message;
$method = uc($method);
# Now search database for the method.
foreach my $item (@$dbarray) {
if ( $method eq "PROPPATCH"
|| $method eq "SEARCH"
|| $method eq "PROPFIND"
|| $method eq "COPY"
|| $method eq "LOCK"
|| $method eq "UNLOCK") {
return $method;
}
if ($item->{'method'} eq $method) {
if ($item->{'nikto_id'} eq "0") {
# is webdav
return $method;
}
else {
$message = $item->{'message'};
$message =~ s/\@TYPE\@/$type/;
add_vulnerability($mark, "$message", $item->{'nikto_id'}, $item->{'osvdb'});
}
}
}
return "";
}
1;
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