The salt master in Salt (aka SaltStack) 0.11.0 through 0.17.0 does not properly drop group privileges, which makes it easier for remote attackers to gain privileges.
The default configuration for salt-ssh in Salt (aka SaltStack) 0.17.0 does not validate the SSH host key of requests, which allows remote attackers to have unspecified impact via a man-in-the-middle (MITM) attack.