The Apache HTTP Server is a widely used web server software that serves as the foundation for many websites and applications. This vulnerability affects how the server handles environment variables set via configuration files, allowing an attacker to potentially execute arbitrary code on the server.
Affected versions: 2.4.65
Upgrade to Apache HTTP Server 2.4.66: Download and install the latest version from the official Apache website: https://httpd.apache.org/download_24.html
- Immediate mitigations:
- Set mod_md configuration options to prevent unintended behavior.
- Monitor for suspicious certificate renewal attempts.