GitHub Workflow Config Exposure Scanner

GitHub is a widely used platform for version control and collaboration, hosting millions of repositories for developers and organizations worldwide. It enables teams to collaborate on code seamlessly, with features like pull requests, issues, and project boards. Developers and organizations use GitHub to manage their software development workflows and ensure robust version tracking. GitHub's workflow automation features help streamline processes such as continuous integration and deployment. The platform supports a wide range of integrations with other services, enhancing productivity and collaboration. With GitHub, users can safely manage code bases, track changes, and collaborate in an agile manner.

The vulnerability involves the exposure of GitHub workflow configuration files, which can lead to unauthorized access or information leakage. Config Exposure in GitHub can allow attackers to view sensitive workflow configurations, potentially leading to exploited CI/CD processes. This vulnerability can expose internal operations or credentials if workflow files reference them. It is essential to secure these configuration files to maintain the integrity and confidentiality of automated processes. Ensuring access controls and proper configuration is critical to prevent unauthorized exposure. Protecting workflow files helps safeguard automated processes from malicious exploitation.

The vulnerability occurs when GitHub workflow files within a repository are exposed publicly, allowing anyone to view their contents. Workflow configuration files are typically located in the ".github/workflows/" directory of a repository. These files can include sensitive information if not properly secured, such as tokens or environment variables used in CI/CD processes. Attackers can exploit these configurations to manipulate workflows or gain insight into internal processes. The regex patterns in the template help identify the presence of workflow configurations. These files are generally accessible through specific URLs if the repository permissions are misconfigured.

If exploited, this vulnerability could allow an attacker to intercept or alter workflow processes, leading to unauthorized actions. Exposure may allow malicious actors to inject or modify workflows, potentially causing damage or unauthorized changes to repositories. Sensitive operations or secret credentials can be exposed, leading to data breaches or leakage of confidential information. Misconfigured workflows can be exploited to execute unwanted actions, harming system integrity and security. Unauthorized exposure may also result in reputational damage for organizations due to leaked internal processes. Effective security management is crucial to prevent exploitation and ensure only authorized personnel access workflow configurations.

REFERENCES

• https://github.com/detectify/ugly-duckling/blob/master/modules/crowdsourced/github-workflows-disclosure.json