CVE-2024-49620 Overview
CVE-2024-49620 is a blind SQL injection vulnerability in the ferma-ru-net-checkout WordPress plugin developed by mrcheck116. The flaw affects all versions of FERMA.ru.net up to and including 1.3.3. An authenticated attacker with low privileges can inject arbitrary SQL statements into database queries through unsanitized input parameters. Successful exploitation leads to disclosure of database contents, modification of records, and potential full compromise of the WordPress backend. The vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command).
Critical Impact
Attackers with low-privileged accounts can extract, alter, or destroy WordPress database contents through blind SQL injection over the network.
Affected Products
- FERMA.ru.net WordPress plugin (ferma-ru-net-checkout) versions up to and including 1.3.3
- WordPress sites running the plugin developed by mrcheck116 / naudinvladimir
- E-commerce checkout integrations relying on the vulnerable FERMA.ru.net component
Discovery Timeline
- 2024-10-20 - CVE-2024-49620 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-49620
Vulnerability Analysis
The vulnerability resides in the FERMA.ru.net checkout plugin, which integrates the FERMA fiscal service with WordPress-based storefronts. User-supplied parameters reach SQL query construction paths without adequate sanitization or parameter binding. Because the flaw manifests as blind SQL injection, the application does not echo query results directly. Attackers infer database contents through boolean-based or time-based side channels. Exploitation requires only low-privilege authentication, meaning any registered account, including basic customer or subscriber roles, may qualify depending on the plugin's endpoint exposure.
Root Cause
The root cause is improper neutralization of special elements in SQL commands, tracked as CWE-89. The plugin concatenates untrusted input into SQL statements instead of using prepared statements or WordPress's $wpdb->prepare() API. Special characters such as single quotes, semicolons, and SQL keywords pass through to the database engine unaltered.
Attack Vector
Exploitation occurs over the network against the WordPress HTTP interface. The attacker authenticates with a low-privilege account, then submits crafted parameters to plugin endpoints that trigger vulnerable query execution. Because the injection is blind, attackers typically automate extraction using tools that measure response timing or content differences to reconstruct data one bit at a time. Consult the Patchstack SQL Injection Advisory for technical details on the affected endpoint.
Detection Methods for CVE-2024-49620
Indicators of Compromise
- Unusual HTTP requests to ferma-ru-net-checkout plugin endpoints containing SQL keywords such as UNION, SLEEP, BENCHMARK, or AND 1=1
- Repeated authenticated POST or GET requests from a single account exhibiting incremental parameter mutations characteristic of automated blind SQLi tools
- Elevated database query latency correlated with requests to plugin URLs
- New administrator accounts or modified WordPress wp_users and wp_options rows following suspicious plugin activity
Detection Strategies
- Deploy a web application firewall with WordPress-aware rules to identify SQL injection payloads targeting plugin parameters
- Enable MySQL general query logging or slow query logging temporarily to spot injected patterns in queries originating from the plugin
- Correlate authenticated WordPress session activity with abnormal query volume or timing anomalies
Monitoring Recommendations
- Alert on HTTP requests to /wp-admin/admin-ajax.php or plugin routes containing SQL metacharacters from low-privilege accounts
- Monitor for outbound data exfiltration attempts following suspicious authenticated requests
- Track privilege changes and content modifications in the WordPress database as post-exploitation indicators
How to Mitigate CVE-2024-49620
Immediate Actions Required
- Deactivate the ferma-ru-net-checkout plugin until a fixed version is confirmed installed
- Audit all WordPress user accounts and revoke access for unknown or unused low-privilege users
- Rotate WordPress database credentials and administrator passwords if exploitation is suspected
- Review WordPress and database logs for signs of blind SQL injection activity dating back to plugin installation
Patch Information
The advisory covers versions up to and including 1.3.3. Administrators should consult the Patchstack SQL Injection Advisory for the latest patched version and upgrade guidance. Apply the vendor-supplied update as soon as it is available.
Workarounds
- Restrict access to plugin endpoints via web server rules or WAF policies until patched
- Enforce strict role separation and disable open user registration on affected WordPress sites
- Deploy virtual patching through a WAF to block SQL injection payload patterns targeting the plugin
- Remove the plugin entirely if the FERMA.ru.net checkout functionality is not required
# Example: temporarily disable the vulnerable plugin via WP-CLI
wp plugin deactivate ferma-ru-net-checkout
wp plugin status ferma-ru-net-checkout
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
