Title

All RHEL 8 networked systems must have SSH installed. (Cat II impact)

Discussion

Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188, SRG-OS-000425-GPOS-00189, SRG-OS-000426-GPOS-00190

Check Content

Verify SSH is installed with the following command: $ sudo yum list installed openssh-server openssh-server.x86_64 8.0p1-5.el8 @anaconda If the "SSH server" package is not installed, this is a finding.

Fix Text

Install SSH packages onto the host with the following command: $ sudo yum install openssh-server.x86_64

Additional Identifiers

Rule ID: SV-244549r916422_rule

Vulnerability ID: V-244549

Group Title: SRG-OS-000423-GPOS-00187

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.