CVE-2023-27634
📋 TL;DR
This Cross-Site Request Forgery (CSRF) vulnerability in the Shingo Intrepidity WordPress plugin allows attackers to trick authenticated administrators into uploading arbitrary files. This could lead to remote code execution or website compromise. Only WordPress sites using the Intrepidity plugin version 1.5.1 or earlier are affected.
💻 Affected Systems
- Shingo Intrepidity WordPress Plugin
📦 What is this software?
Intrepidity by Intrepidity Project
⚠️ Risk & Real-World Impact
Worst Case
Complete website takeover through arbitrary file upload leading to remote code execution, data theft, defacement, or malware distribution.
Likely Case
Unauthorized file upload allowing backdoor installation, content manipulation, or privilege escalation.
If Mitigated
No impact if proper CSRF protections are implemented or plugin is updated/disabled.
🎯 Exploit Status
Exploitation requires tricking an authenticated admin into visiting a malicious page. CSRF attacks are well-understood and easy to weaponize.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.5.2 or later
Vendor Advisory: https://patchstack.com/database/vulnerability/intrepidity/wordpress-intrepidity-theme-1-5-1-cross-site-request-forgery-csrf?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Intrepidity' plugin. 4. Click 'Update Now' if available. 5. If no update is available, download version 1.5.2+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Intrepidity Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate intrepidity
Implement CSRF Tokens
allAdd CSRF protection to file upload endpoints if custom code modifications are possible.
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block CSRF attacks targeting file upload endpoints.
- Restrict admin access to trusted networks only and enforce strong authentication for admin accounts.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Intrepidity plugin version 1.5.1 or earlier.Check Version:
wp plugin get intrepidity --field=versionVerify Fix Applied:
Verify plugin version is 1.5.2 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads via admin endpoints
- CSRF token validation failures in web server logs
Network Indicators:
- POST requests to /wp-admin/admin-ajax.php or similar endpoints without referrer headers
- File uploads from unexpected sources
SIEM Query:
source="wordpress.log" AND ("admin-ajax.php" OR "file upload") AND status=200 AND user_agent NOT IN ["expected_browsers"]