CVE-2024-13899
📋 TL;DR
The Mambo Importer WordPress plugin is vulnerable to PHP object injection via deserialization of untrusted input, allowing authenticated administrators to inject PHP objects. This vulnerability only has impact if another plugin or theme containing a POP chain is installed on the site. Sites using Mambo Importer version 1.0 or earlier are affected.
💻 Affected Systems
- Mambo Importer WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
If a POP chain is present via another plugin/theme, attackers could execute arbitrary code, delete files, or steal sensitive data, potentially leading to complete site compromise.
Likely Case
Limited impact since no POP chain exists in the vulnerable software itself; exploitation requires specific additional vulnerable components to be present on the target system.
If Mitigated
With proper access controls limiting administrator accounts and monitoring for suspicious activity, impact can be minimized even if exploitation occurs.
🎯 Exploit Status
Exploitation requires administrator credentials and depends on availability of POP chains in other installed components.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.0 (plugin appears abandoned with no official fix)
Vendor Advisory: https://www.wordfence.com/threat-intel/vulnerabilities/id/b6d448c2-5acc-47f8-8e86-9ef10fa01513
Restart Required: No
Instructions:
1. Remove the Mambo Importer plugin completely. 2. No official patch exists as plugin appears abandoned. 3. Consider alternative migration tools if needed.
🔧 Temporary Workarounds
Remove vulnerable plugin
WordPressCompletely remove the Mambo Importer plugin from WordPress installation
wp plugin delete mambo-joomla-importer
🧯 If You Can't Patch
- Restrict administrator accounts to only trusted personnel
- Monitor for suspicious administrator activity and file modifications
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins for 'Mambo Importer' plugin. If installed and version is 1.0 or earlier, system is vulnerable.Check Version:
wp plugin get mambo-joomla-importer --field=versionVerify Fix Applied:
Verify plugin is no longer installed in WordPress plugins list📡 Detection & Monitoring
Log Indicators:
- Unusual administrator activity, especially related to plugin management or import functions
- PHP errors related to deserialization or object injection
Network Indicators:
- HTTP requests to WordPress admin-ajax.php or admin-post.php with suspicious serialized data parameters
SIEM Query:
source="wordpress" AND (uri_path="/wp-admin/admin-ajax.php" OR uri_path="/wp-admin/admin-post.php") AND (param="data" OR param="fImportMenu")