SSH Authorized Keys Exposure Scanner

SSH, standing for Secure Shell, is a protocol used to securely connect to remote systems. It is widely used by system administrators and developers to manage servers and transfer files. This protocol is essential for various tasks that require secure access and execution of commands on remote machines. The SSH authorized keys feature allows for key-based authentication, which is a secure method of login. Companies of all sizes across the world utilize SSH to enhance their cybersecurity. Proper management of SSH configurations is critical to maintaining a secure IT infrastructure.

Config Exposure refers to the inadvertent disclosure of configuration files that can potentially lead to unauthorized access or system manipulation. When SSH authorized keys files are exposed, it can allow attackers to access systems without the need for passwords. This type of vulnerability is significant as it could provide unauthorized users with administrative level access. Detecting such exposure is crucial because it helps in preemptively securing the systems. Maintaining the confidentiality of SSH keys is a fundamental aspect of safeguarding system integrity. Config Exposure could represent a significant risk if not identified and rectified.

The vulnerability involves the exposure of SSH authorized keys files, which are intended to enable secure key-based authentication for SSH. These files should remain confidential and accessible only to users with the necessary permissions. The template checks for public availability of the `.ssh/authorized_keys` file in common directories. If detected, it indicates a misconfiguration that exposes critical authentication mechanisms to potential exploitations. The endpoint paths specified for the vulnerability are indicative of oversight in file permission settings. An accurate configuration and access policy can help mitigate this vulnerability.

If exploited, exposed SSH authorized keys can lead to unauthorized access, data breaches, and system compromise. The attacker could gain legitimate access to the server, bypassing password authentication. It can also lead to lateral movement within networks, allowing attackers to infiltrate various systems. Tampering with sensitive data, injection of malicious software, and execution of arbitrary code could be possible outcomes of successful exploitation. The overall impact depends on the permissions associated with the exposed SSH keys. Consequently, addressing such configuration exposures is important for preventing potential security incidents.

REFERENCES

• https://www.ssh.com/academy/ssh/authorized-key