CVE-2023-42501: Apache Superset: Unnecessary read permissions within the Gamma role

[Daniel Gaspar <dpgaspar () apache org>]

Affected versions:

- Apache Superset before 2.1.2

Description:

Unnecessary read permissions within the Gamma role would allow authenticated users to read configured CSS templates and 
annotations.
This issue affects Apache Superset: before 2.1.2.
Users should upgrade to version or above 2.1.2 and run `superset init` to reconstruct the Gamma role or remove 
`can_read` permission from the mentioned resources.

Credit:

Miguel Segovia Gil (finder)

References:

https://superset.apache.org
https://www.cve.org/CVERecord?id=CVE-2023-42501