CVE-2019-3893: Foreman: Compute resource credentials exposed during deletion on API

[Tomer Brisker <tbrisker () redhat com>]

Hello,

An information disclosure vulnerability has been discovered in the Foreman API.

When deleting a compute resource via the API, the API responded with
details of the compute resource, including credentials in clear text.

Users not able to upgrade should ensure the `delete_compute_resource`
permission is not granted to users not trusted with the credentials.

This issue affects Foreman 1.1 and higher. The fix has been released
with Foreman 1.21.1.
Further details are available at https://projects.theforeman.org/issues/26450.

-- 
Have a nice day,
Tomer Brisker
Red Hat Engineering