CVE-2022-39321 – GitHub Actions Runner vulnerable to Docker Command Escaping

https://notcve.org/view.php?id=CVE-2022-39321

GitHub Actions Runner is the application that runs a job from a GitHub Actions workflow. The actions runner invokes the docker cli directly in order to run job containers, service containers, or container actions. A bug in the logic for how the environment is encoded into these docker commands was discovered in versions prior to 2.296.2, 2.293.1, 2.289.4, 2.285.2, and 2.283.4 that allows an input to escape the environment variable and modify that docker command invocation directly. Jobs that use container actions, job containers, or service containers alongside untrusted user inputs in environment variables may be vulnerable. The Actions Runner has been patched, both on `github.com` and hotfixes for GHES and GHAE customers in versions 2.296.2, 2.293.1, 2.289.4, 2.285.2, and 2.283.4. • https://github.com/actions/runner/pull/2107 https://github.com/actions/runner/pull/2108 https://github.com/actions/runner/security/advisories/GHSA-2c6m-6gqh-6qg3 • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •