STIGUI
V-280961CAT II — Medium severitySV-280961r1165238_rule

RHEL 10 must disable network management of the chrony daemon.

Rule version RHEL-10-200543 · STIG v1 · 2026-09-17

Discussion

Not exposing the management interface of the chrony daemon on the network diminishes the attack space.

Satisfies: SRG-OS-000096-GPOS-00050, SRG-OS-000095-GPOS-00049

Check

Verify RHEL 10 disables network management of the chrony daemon with the following command:

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

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

Fix

Configure RHEL 10 to disable network management of the chrony daemon by adding/modifying the following line in the "/etc/chrony.conf" file:

cmdport 0

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

$ sudo systemctl restart chronyd

Identifiers

Group ID
V-280961
Group title
SRG-OS-000096-GPOS-00050
Rule ID
SV-280961r1165238_rule
Check ID
C-85522r1165236_chk
Fix ID
F-85427r1165237_fix