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V-280960

CAT II (Medium)

RHEL 10 must disable the chrony daemon from acting as a server.

Rule ID

SV-280960r1165235_rule

STIG

Red Hat Enterprise Linux 10 Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-000382 CCI-000381

Discussion

Minimizing the exposure of the server functionality of the chrony daemon diminishes the attack surface. Satisfies: SRG-OS-000096-GPOS-00050, SRG-OS-000095-GPOS-00049

Check Content

Verify RHEL 10 disables the chrony daemon from acting as a server with the following command:

$ sudo grep -w port /etc/chrony.conf
port 0

If the "port" option is not set to "0", is commented out, or is missing, this is a finding.

Fix Text

Configure RHEL 10 to disable the chrony daemon from acting as a server by adding/modifying the following line in the "/etc/chrony.conf" file:

port 0

Restart the chronyd service with the following command for the changes to take effect:

$ sudo systemctl restart chronyd