Detections
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1.172 RHEL-09-252025

Information

RHEL 9 must disable the chrony daemon from acting as a server.

GROUP ID: V-257946
RULE ID: SV-257946r958480

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

Solution

Configure RHEL 9 to disable the chrony daemon from acting as a server by adding/modifying the following line in the /etc/chrony.conf file:

port 0

See Also

https://workbench.cisecurity.org/benchmarks/22008

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-7, 800-53|CM-7a., 800-53|CM-7b., CAT|II, CCI|CCI-000381, CCI|CCI-000382, Rule-ID|SV-257946r958480_rule, STIG-ID|RHEL-09-252025, Vuln-ID|V-257946

Plugin: Unix

Control ID: c89b95625b2996a0c22eee712cdf81e3813a3ceac32053d7d7cabf1e9e1b764c