CVE-2024-40336
📋 TL;DR
CVE-2024-40336 is a cross-site scripting (XSS) vulnerability in idccms v1.35's Image Advertising Management module. Attackers can inject malicious scripts that execute in users' browsers when viewing manipulated advertisements. This affects all users of idccms v1.35 with the vulnerable module enabled.
💻 Affected Systems
- idccms
📦 What is this software?
Idccms by Idccms
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, take over administrative accounts, deface websites, or redirect users to malicious sites, potentially leading to complete system compromise.
Likely Case
Attackers inject malicious scripts to steal user session cookies or credentials, perform actions on behalf of authenticated users, or deface the advertising content.
If Mitigated
With proper input validation and output encoding, the impact is limited to minor content manipulation without privilege escalation.
🎯 Exploit Status
Exploitation requires access to the Image Advertising Management interface, typically requiring authentication. The vulnerability is in the content management functionality where user input is not properly sanitized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement input validation and output encoding in the affected module.
🔧 Temporary Workarounds
Implement Input Validation and Output Encoding
allAdd server-side validation to sanitize all user inputs in the Image Advertising Management module and implement proper output encoding for HTML contexts.
Disable Image Advertising Management Module
allTemporarily disable the vulnerable module until a proper fix is available.
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with XSS protection rules to block malicious payloads.
- Restrict access to the Image Advertising Management interface to trusted IP addresses only.
🔍 How to Verify
Check if Vulnerable:
Check if idccms version is 1.35 and the Image Advertising Management module is enabled. Test by attempting to inject script tags in advertisement content fields.Check Version:
Check the CMS version in the admin panel or configuration files.Verify Fix Applied:
Verify that script injection attempts in advertisement content are properly sanitized and do not execute in user browsers.📡 Detection & Monitoring
Log Indicators:
- Unusual modifications to advertisement content, especially containing script tags or JavaScript code
Network Indicators:
- HTTP requests with suspicious parameters containing script tags or encoded payloads to the advertising management endpoints
SIEM Query:
Search for POST requests to */admin/advertisement* endpoints with parameters containing <script> tags or JavaScript code.