CVE-2021-24827
📋 TL;DR
CVE-2021-24827 is an unauthenticated SQL injection vulnerability in the Asgaros Forum WordPress plugin. Attackers can exploit this to execute arbitrary SQL commands on affected WordPress sites, potentially compromising the database. All WordPress sites running vulnerable versions of Asgaros Forum are affected.
💻 Affected Systems
- Asgaros Forum WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, privilege escalation, site takeover, or remote code execution via database functions.
Likely Case
Data exfiltration, user information theft, and potential administrative access to the WordPress site.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only data viewing without modification.
🎯 Exploit Status
SQL injection via subscription functionality requires no authentication, making exploitation straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.15.13
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/2611560/asgaros-forum
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Asgaros Forum. 4. Click 'Update Now' if available. 5. Alternatively, download version 1.15.13+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the Asgaros Forum plugin until patched.
wp plugin deactivate asgaros-forum
WAF Rule
allImplement web application firewall rules to block SQL injection patterns targeting subscription endpoints.
🧯 If You Can't Patch
- Implement strict input validation and parameterized queries in custom code.
- Restrict database user permissions to minimum required privileges.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Asgaros Forum version number.Check Version:
wp plugin get asgaros-forum --field=versionVerify Fix Applied:
Confirm plugin version is 1.15.13 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed subscription attempts with SQL syntax
Network Indicators:
- HTTP POST requests to /wp-admin/admin-ajax.php with SQL payloads in parameters
SIEM Query:
source="web_logs" AND uri="/wp-admin/admin-ajax.php" AND (param="action"="subscribe_topic" OR param="topic_id" CONTAINS SQL keywords)