CVE-2024-1529
📋 TL;DR
CMS Made Simple 2.2.14 has a cross-site scripting vulnerability in the admin user creation page that allows attackers to inject malicious JavaScript. This could enable session hijacking when authenticated administrators view crafted user data. Only systems running the vulnerable version with admin access are affected.
💻 Affected Systems
- CMS Made Simple
📦 What is this software?
Cms Made Simple by Cmsmadesimple
⚠️ Risk & Real-World Impact
Worst Case
Complete admin account takeover leading to website defacement, data theft, or further server compromise through admin privileges.
Likely Case
Session hijacking of admin accounts allowing unauthorized content changes or data access.
If Mitigated
Limited impact with proper input validation and output encoding in place.
🎯 Exploit Status
Exploitation requires authenticated admin access; XSS payloads can be delivered through user creation forms.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.15 or later
Vendor Advisory: https://forum.cmsmadesimple.org/viewforum.php?f=1
Restart Required: No
Instructions:
1. Backup your CMS installation and database. 2. Download CMS Made Simple 2.2.15+ from official sources. 3. Replace vulnerable files with patched versions. 4. Clear CMS cache. 5. Verify admin functionality works.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation for all user-controlled parameters in adduser.php
Modify /admin/adduser.php to sanitize all POST/GET parameters before processing
Output Encoding
allApply proper HTML encoding to all user-controlled output in admin interface
Update templates to use htmlspecialchars() or equivalent encoding
🧯 If You Can't Patch
- Restrict admin access to trusted IP addresses only
- Implement web application firewall with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check CMS version in admin panel or via version.php file; if version is 2.2.14, system is vulnerable.Check Version:
grep '\$CMS_VERSION' /path/to/cms/version.phpVerify Fix Applied:
After update, confirm version shows 2.2.15+ in admin panel and test XSS payloads no longer execute.📡 Detection & Monitoring
Log Indicators:
- Unusual admin user creation attempts
- Suspicious JavaScript in POST parameters to adduser.php
Network Indicators:
- HTTP requests to /admin/adduser.php with script tags in parameters
SIEM Query:
source="web_logs" AND uri="/admin/adduser.php" AND (param="*<script*" OR param="*javascript:*")