An issue was discovered in SaltStack Salt before 3002.5. The salt-api's ssh client is vulnerable to a shell injection by including ProxyCommand in an argument, or via ssh_options provided in an API request.
https://github.com/saltstack/salt/releases
https://lists.debian.org/debian-lts-announce/2021/11/msg00009.html
https://lists.debian.org/debian-lts-announce/2022/01/msg00000.html
https://security.gentoo.org/glsa/202103-01