CVE-2022-0282
📋 TL;DR
This CVE describes a cross-site scripting (XSS) vulnerability in Microweber CMS versions prior to 1.2.11. Attackers can inject malicious scripts into web pages viewed by other users, potentially stealing session cookies or performing actions on behalf of victims. All Microweber installations running vulnerable versions are affected.
💻 Affected Systems
- Microweber CMS
📦 What is this software?
Microweber by Microweber
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, gain administrative access to the CMS, deface websites, or install backdoors.
Likely Case
Attackers steal user session cookies or credentials, perform unauthorized actions on behalf of users, or redirect users to malicious sites.
If Mitigated
With proper input validation and output encoding, impact is limited to minor data leakage or UI disruption.
🎯 Exploit Status
XSS vulnerabilities are commonly weaponized. The fix commit shows specific input fields that needed sanitization.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.2.11
Vendor Advisory: https://github.com/microweber/microweber/commit/51b5a4e3ef01e587797c0109159a8ad9d2bac77a
Restart Required: No
Instructions:
1. Backup your Microweber installation and database. 2. Update to version 1.2.11 or later via Composer: 'composer require microweber/microweber:^1.2.11'. 3. Clear cache if applicable. 4. Verify the update completed successfully.
🔧 Temporary Workarounds
Input Validation Filter
allImplement custom input validation to sanitize user inputs before processing
Implement server-side validation for all user inputs using PHP's filter_var() or htmlspecialchars() functions
Content Security Policy
allImplement CSP headers to restrict script execution sources
Add 'Content-Security-Policy: default-src 'self'; script-src 'self'' to HTTP headers
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block XSS payloads
- Disable user input fields or implement strict input validation for all forms
🔍 How to Verify
Check if Vulnerable:
Check Microweber version in admin panel or via composer: 'composer show microweber/microweber | grep version'Check Version:
composer show microweber/microweber | grep versionVerify Fix Applied:
Verify version is 1.2.11 or higher and test input fields with basic XSS payloads like '<script>alert(1)</script>'📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests with script tags or JavaScript code in parameters
- Multiple failed login attempts followed by successful login from different IP
Network Indicators:
- HTTP requests containing '<script>' tags in URL parameters or POST data
- Unexpected redirects to external domains
SIEM Query:
source="web_logs" AND ("<script>" OR "javascript:" OR "onload=" OR "onerror=")🔗 References
- https://github.com/microweber/microweber/commit/51b5a4e3ef01e587797c0109159a8ad9d2bac77a
- https://huntr.dev/bounties/8815b642-bd9b-4737-951b-bde7319faedd
- https://github.com/microweber/microweber/commit/51b5a4e3ef01e587797c0109159a8ad9d2bac77a
- https://huntr.dev/bounties/8815b642-bd9b-4737-951b-bde7319faedd
