circleci ssh-config exposure

What is the "circleci ssh-config exposure?"

The "circleci ssh-config exposure" module is designed to detect misconfigurations in the CircleCI software. It focuses on identifying potential vulnerabilities related to the exposure of sensitive SSH configuration files. This module has a low severity level and was authored by geeknik.

Impact

If the CircleCI SSH configuration files are exposed, it could potentially lead to unauthorized access to sensitive information, such as host names, IP addresses, and identity files. This exposure could be exploited by malicious actors to gain unauthorized access to the system or perform other malicious activities.

How the module works?

The module works by sending an HTTP GET request to the "/.circleci/ssh-config" path. It then applies matching conditions to determine if the response contains specific keywords, such as "Host," "HostName," and "IdentityFile." Additionally, it checks if the response status is 200 (OK). If both conditions are met, the module identifies a potential misconfiguration or vulnerability related to the exposure of CircleCI SSH configuration files.

Example HTTP request:

GET /.circleci/ssh-config

The module's matching conditions:

- The response must contain all of the following keywords: "Host," "HostName," and "IdentityFile." - The response status must be 200 (OK).

When these conditions are satisfied, the module reports a potential vulnerability or misconfiguration related to the exposure of CircleCI SSH configuration files.