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Threat Model Analysis for nektos/act

Threat: Privilege Escalation via act

Description: Vulnerabilities in act's code or execution logic could be exploited by a malicious actor to gain elevated privileges on the local system or within the Docker environment where act is running. This could involve bypassing security checks within act or exploiting flaws in how act interacts with the Docker daemon. An attacker might craft specific workflows or inputs to act that trigger these vulnerabilities.

  • Impact: Full system compromise, unauthorized access to sensitive data on the host system, ability to execute arbitrary commands with elevated privileges, potential for persistent backdoor installation, complete control over the local machine used for development or CI/CD.
  • Affected Component: act core code, act execution logic, act's interaction with Docker API and runtime environment.
  • Risk Severity: Critical
  • Mitigation Strategies:
    • Keep act updated to the latest version. Security updates often patch discovered vulnerabilities that could lead to privilege escalation. Regularly check for new releases and apply updates promptly.
    • Monitor security advisories for act. Stay informed about known vulnerabilities and recommended mitigations by subscribing to security mailing lists or monitoring the act project's security channels (if any).
    • Run act with least privileges whenever possible. Avoid running act as root or with unnecessary administrative privileges. If possible, configure your environment to execute act under a less privileged user account.
    • Carefully review act's execution environment and dependencies. Understand the security implications of the environment where act is running and any external libraries or components it relies on.
    • Report any suspected vulnerabilities in act to the project maintainers immediately. Responsible disclosure helps the community and maintainers address security issues promptly and prevent potential exploitation.
    • Consider using security scanning tools to analyze act's codebase for potential vulnerabilities. While this might be more relevant for act developers, users with sufficient technical expertise could also perform or commission security audits.