CVE-2024-6027: Themify Product Filter SQLI Vulnerability

CVE-2024-6027 Overview

The Themify – WooCommerce Product Filter plugin for WordPress is vulnerable to time-based SQL Injection via the 'conditions' parameter in all versions up to, and including, 1.4.9. This vulnerability is due to insufficient escaping on the user-supplied parameter and lack of sufficient preparation on the existing SQL query. Unauthenticated attackers can exploit this issue to append additional SQL queries to extract sensitive information from the database.

Critical Impact

This vulnerability allows attackers to compromise sensitive database information without authentication.

Affected Products

• Themify Product Filter 1.4.9

Discovery Timeline

• 2024-06-21 - CVE CVE-2024-6027 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-6027

Vulnerability Analysis

The vulnerability stems from improper handling of the 'conditions' parameter, leading to the possibility of an SQL Injection attack. The attacker can inject time-based, blind SQL queries to manipulate database responses, thereby gaining unauthorized access to sensitive information.

Root Cause

Lack of input sanitization and parameterized queries in processing the 'conditions' parameter results in this vulnerability.

Attack Vector

The attack can be carried out remotely via the network by sending manipulated requests to the vulnerable parameter without authentication.

-- Example exploitation code (sanitized)
SELECT * FROM wp_options WHERE option_name = 'siteurl' AND (SELECT SLEEP(5)) #

Detection Methods for CVE-2024-6027

Indicators of Compromise

• Unusual slow response times in the web application
• Unexpected queries in database logs
• Modifications in database records without admin activity

Detection Strategies

Implement monitoring for anomalous SQL query patterns and delays in response times. Use network-based intrusion detection systems (NIDS) to identify potential injection exploits.

Monitoring Recommendations

Regularly review server logs for patterns associated with time-based SQL Injection. Employ database activity monitoring tools to detect and alert on suspicious queries.

How to Mitigate CVE-2024-6027

Immediate Actions Required

• Disable the 'Themify Product Filter' plugin until patched
• Implement web application firewall (WAF) rules to block SQL injection attempts
• Conduct security assessments on exposed web interfaces

Patch Information

Monitor the Themify Release Notes for updates and apply patches as soon as they are released.

Workarounds

Until a patch is available, restrict access to the WordPress plugin by using network-level controls and ensure strict validation and sanitation of user inputs.

# Configuration example for mitigating SQL injection
location / {
    if ($query_string ~* "\b(UNION|SELECT|INSERT|UPDATE|DELETE|SLEEP)\b") {
        return 403;
    }
}