How to upgrade from RHEL 7.2 to 7.3 and not up to 7.4

I have RHEL 7.2 running on an Intel Xeon and a device driver for a tape library that currently supports RHEL 7.2. Another device driver level exists for RHEL 7.3. The device driver support for RHEL 7.4 is not yet available but I want to go to RHEL 7.3 now.
The question is: How can I go from RHEL 7.2 to 7.3 today and not beyond, that is to say not up to 7.4 which is already available right now?
I do not see such capabiity by using yum update. It provides updates to the latest level by default, 7.4, hence the problem.
Is there a mean to have an ISO of RHEL at 7.3 that can be used as repository for 7.3? Or can I connect to a repository at 7.3?
Any hints are quite welcome. Thank you