Adminer Server Side Request Forgery (SSRF)
Description
Adminer is a popular PHP-based database management tool that provides a web interface for managing various database systems. Versions that bundle all database drivers (such as the standalone adminer.php file) contain a Server Side Request Forgery (SSRF) vulnerability in the Elasticsearch login module. This flaw allows unauthenticated attackers to abuse the server as a proxy to make HTTP requests to arbitrary internal or external systems, potentially exposing sensitive information from networks that should not be directly accessible.
Remediation
Immediately upgrade Adminer to version <strong>4.7.9</strong> or later, which contains a fix for this vulnerability. Follow these steps to remediate:<br/><br/>1. Download the latest version of Adminer from the official website or repository<br/>2. Replace the existing adminer.php file with the updated version<br/>3. Verify the version number by accessing the Adminer interface and checking the footer or login page<br/>4. If immediate patching is not possible, implement network-level controls to restrict access to the Adminer interface using IP whitelisting or VPN requirements<br/>5. Consider using driver-specific versions of Adminer (e.g., adminer-mysql.php) instead of the all-drivers bundle if you only need support for specific database systems<br/><br/>As an additional security measure, ensure Adminer is not deployed in production environments or is protected behind strong authentication mechanisms and network access controls.