CVE-2024-53807
📋 TL;DR
This SQL injection vulnerability in the WP Mailster WordPress plugin allows attackers to execute arbitrary SQL commands through specially crafted inputs. It affects all WP Mailster installations from unknown versions through 1.8.16.0, potentially compromising WordPress sites using this plugin.
💻 Affected Systems
- WP Mailster WordPress Plugin
📦 What is this software?
Wp Mailster by Wpmailster
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, privilege escalation, site takeover, or data destruction.
Likely Case
Unauthorized data access, extraction of sensitive information like user credentials, and potential site defacement.
If Mitigated
Limited impact if proper input validation and parameterized queries are implemented, though risk remains if vulnerable code paths are accessible.
🎯 Exploit Status
Blind SQL injection suggests exploitation requires inference techniques but is still accessible to attackers with basic SQLi knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 1.8.16.0
Vendor Advisory: https://patchstack.com/database/wordpress/plugin/wp-mailster/vulnerability/wordpress-wp-mailster-plugin-1-8-16-0-sql-injection-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find WP Mailster and click 'Update Now' if available. 4. If no update appears, manually download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable WP Mailster Plugin
allTemporarily deactivate the vulnerable plugin until patched.
wp plugin deactivate wp-mailster
Web Application Firewall (WAF) Rules
allImplement WAF rules to block SQL injection patterns targeting WP Mailster endpoints.
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user inputs in custom code.
- Use parameterized queries or prepared statements for all database interactions.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for WP Mailster version. If version is 1.8.16.0 or earlier, you are vulnerable.Check Version:
wp plugin get wp-mailster --field=versionVerify Fix Applied:
After updating, verify WP Mailster version is higher than 1.8.16.0 in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in WordPress debug logs
- Multiple failed login attempts or unusual database queries from single IPs
Network Indicators:
- HTTP requests with SQL injection patterns (UNION, SELECT, etc.) to WP Mailster endpoints
SIEM Query:
source="wordpress.log" AND "wp-mailster" AND ("sql" OR "database error" OR "union select")