CVE-2024-49624
📋 TL;DR
This CVE describes a PHP object injection vulnerability in the Smartdevth Advanced Advertising System WordPress plugin. Attackers can exploit insecure deserialization to execute arbitrary code, potentially compromising affected WordPress sites. All users running versions up to 1.3.1 are vulnerable.
💻 Affected Systems
- Smartdevth Advanced Advertising System WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, website defacement, or installation of persistent backdoors.
Likely Case
Unauthenticated attackers achieving remote code execution to install malware, create admin accounts, or steal sensitive data.
If Mitigated
Attack blocked at WAF level or plugin disabled, preventing exploitation but potentially breaking functionality.
🎯 Exploit Status
Public exploit details available on Patchstack; CVSS 9.8 indicates trivial exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Advanced Advertising System'. 4. Click 'Update Now' if available. 5. If no update appears, manually download version 1.3.2+ from WordPress repository and replace files.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily deactivate the vulnerable plugin until patched.
wp plugin deactivate advanced-advertising-system
WAF Rule for Deserialization
allBlock requests containing serialized PHP objects in parameters.
Modify WAF to block patterns like O:[0-9]+:"
Block base64 encoded serialized data
🧯 If You Can't Patch
- Disable the Advanced Advertising System plugin immediately.
- Implement strict WAF rules to block deserialization attempts and monitor for exploitation.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Advanced Advertising System → Version. If version is 1.3.1 or earlier, system is vulnerable.Check Version:
wp plugin get advanced-advertising-system --field=versionVerify Fix Applied:
Verify plugin version is 1.3.2 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress admin-ajax.php or plugin endpoints
- PHP errors related to unserialize() or object injection
- Unexpected file creations in wp-content/uploads
Network Indicators:
- HTTP requests containing serialized PHP objects (O:8:"stdClass") in parameters
- Base64 encoded payloads in POST data to plugin endpoints
SIEM Query:
source="wordpress.log" AND ("unserialize" OR "O:" OR "advanced-advertising-system") AND status=200