CVE-2024-46998
📋 TL;DR
baserCMS versions before 5.1.2 contain a cross-site scripting (XSS) vulnerability in the Edit Email Form Settings feature. This allows attackers to inject malicious scripts that execute in users' browsers when they view the affected settings page. Administrators and users with access to email form settings are primarily affected.
💻 Affected Systems
- baserCMS
📦 What is this software?
Basercms by Basercms
⚠️ Risk & Real-World Impact
Worst Case
An attacker could steal administrator session cookies, perform actions as the administrator, deface the website, or redirect users to malicious sites.
Likely Case
Attackers inject malicious scripts to steal session cookies or credentials from administrators accessing the email form settings.
If Mitigated
With proper input validation and output encoding, the malicious scripts would be neutralized before execution.
🎯 Exploit Status
Exploitation requires the attacker to have access to inject malicious input into the email form settings, typically requiring some level of access or social engineering.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.1.2
Vendor Advisory: https://basercms.net/security/JVN_98693329
Restart Required: No
Instructions:
1. Backup your baserCMS installation and database. 2. Download baserCMS version 5.1.2 from the official repository. 3. Replace the existing files with the new version. 4. Clear any caching mechanisms. 5. Verify the update was successful.
🔧 Temporary Workarounds
Disable Email Form Settings Access
allRestrict access to the Edit Email Form Settings feature to only trusted administrators.
Implement Input Validation
allAdd server-side input validation to sanitize user inputs in the email form settings.
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to mitigate script execution.
- Use web application firewalls (WAF) to filter malicious input patterns.
🔍 How to Verify
Check if Vulnerable:
Check the baserCMS version in the admin panel or via the system information page.Check Version:
Check the version in the admin dashboard or inspect the baserCMS configuration files.Verify Fix Applied:
After updating, confirm the version is 5.1.2 or later and test the Edit Email Form Settings for any script injection.📡 Detection & Monitoring
Log Indicators:
- Unusual input patterns in email form settings logs, such as script tags or JavaScript code.
Network Indicators:
- Unexpected outbound connections from the baserCMS server after accessing email settings.
SIEM Query:
Search for logs containing 'email_form_settings' with suspicious payloads like <script> or javascript: