Version 2015.8.13 is a bugfix release for 2015.8.0.
CVE-2017-5192 local_batch client external authentication not respected
LocalClient.cmd_batch() method client does not accept
credentials and so access to it from salt-api has been removed for now. This
vulnerability allows code execution for already-authenticated users and is only
in effect when running salt-api as the
CVE-2017-5200 Salt-api allows arbitrary command execution on a salt-master via Salt's ssh_client
Users of Salt-API and salt-ssh could execute a command on the salt master via a hole when both systems were enabled.
We recommend everyone on the 2015.8 branch upgrade to a patched release as soon as possible.