SSH login with "MACs=hmac-md5" option from RHEL7.4 SSH client to RHEL7.4 SSH server is not rejected

Solution Verified - Updated -

Issue

SSH login with "MACs=hmac-md5" option from RHEL7.4 SSH client to RHEL7.4 SSH server is not rejected. Release Notes for Red Hat Enterprise Linux 7.4 (Chapter 53) states that hmac-md5 has been removed.
Therefore, we expect that SSH login with "MACs=hmac-md5" option is rejected. In addition, SSH login with "MACs=hmac-md5" option from RHEL7.3 SSH client to RHEL7.4 SSH server was rejected with a message "no matching mac found: client hmac-md5 server...".

Environment

  • Red Hat Enterprise Linux 7.4
  • openssh-7.4p1-16.el7

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content