info.cgi Environment Variable Disclosure Detection Scanner

The info.cgi script is commonly used in various web servers to output environment variables and configuration details. It is typically utilized by system administrators and developers to troubleshoot and configure servers. The script can provide valuable details, aiding in the understanding and maintenance of server environments. However, if exposed, it can reveal sensitive details that may be exploited by attackers.

Configuration Disclosure in info.cgi can lead to the exposure of critical server environment variables. Variables such as internal IP addresses, system paths, and software versions may be inadvertently exposed. This vulnerability arises when the info.cgi script is accessible without proper access controls. Attackers can exploit this to gain insights into the server's architecture and potential weaknesses.

The technical details of this vulnerability involve accessing specific endpoints where the info.cgi file resides. Vulnerable parameters include script paths that do not correctly handle permissions or authentication checks. This exposure often manifests in URLs that return sensitive system information in response headers or body content.

When exploited, this vulnerability can lead to disclosure of sensitive data, aiding attackers in launching further attacks. Potential effects include privilege escalation, targeted attacks using disclosed information, and exploitation of revealed configurations. Mitigating this exposure is crucial for maintaining server security and preventing unauthorized access to sensitive data.

REFERENCES

• https://www.acunetix.com/vulnerabilities/web/test-cgi-script-leaking-environment-variables/
• https://book.hacktricks.xyz/network-services-pentesting/pentesting-web/cgi