CVE-2024-1538
📋 TL;DR
This CSRF vulnerability in the WordPress File Manager plugin allows unauthenticated attackers to trick administrators into executing malicious JavaScript, potentially leading to remote code execution. All WordPress sites using File Manager plugin versions up to 7.2.4 are affected. The attack requires social engineering to get an administrator to click a malicious link.
💻 Affected Systems
- WordPress File Manager plugin
📦 What is this software?
File Manager by Filemanagerpro
⚠️ Risk & Real-World Impact
Worst Case
Full site compromise via remote code execution, allowing attacker to install backdoors, deface site, steal data, or pivot to other systems.
Likely Case
Limited file inclusion leading to JavaScript execution in admin context, potentially enabling privilege escalation or data exfiltration.
If Mitigated
Attack fails due to proper nonce validation or administrator not clicking malicious links.
🎯 Exploit Status
Exploit requires social engineering to trick administrator into clicking malicious link. Technical exploitation is straightforward once the link is clicked.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.2.5
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3051451/wp-file-manager
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'File Manager' plugin. 4. Click 'Update Now' if update available. 5. If no update available, manually update to version 7.2.5 or later from WordPress plugin repository.
🔧 Temporary Workarounds
Disable File Manager plugin
allTemporarily deactivate the vulnerable plugin until patched
wp plugin deactivate wp-file-manager
Add CSRF protection headers
allImplement additional CSRF protection at web server level
🧯 If You Can't Patch
- Restrict admin panel access to trusted IP addresses only
- Implement web application firewall rules to block requests with malicious 'lang' parameters
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → File Manager → Version. If version is 7.2.4 or lower, you are vulnerable.Check Version:
wp plugin get wp-file-manager --field=versionVerify Fix Applied:
Verify File Manager plugin version is 7.2.5 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual file inclusion requests with 'lang' parameter
- Multiple failed admin login attempts followed by successful login
Network Indicators:
- HTTP requests to wp-admin/admin.php?page=wp_file_manager with lang parameter
- Outbound connections from WordPress server to unknown IPs
SIEM Query:
source="wordpress.log" AND ("wp_file_manager" AND "lang=")🔗 References
- https://plugins.trac.wordpress.org/changeset/3051451/wp-file-manager
- https://www.wordfence.com/threat-intel/vulnerabilities/id/57cc15a6-2cf5-481f-bb81-ada48aa74009?source=cve
- https://plugins.trac.wordpress.org/changeset/3051451/wp-file-manager
- https://www.wordfence.com/threat-intel/vulnerabilities/id/57cc15a6-2cf5-481f-bb81-ada48aa74009?source=cve
