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The time synchronization configuration file (such as /etc/ntp.conf) must not have an extended ACL.


Overview

Finding ID Version Rule ID IA Controls Severity
V-22297 GEN000253 SV-38301r1_rule ECLP-1 Medium
Description
A synchronized system clock is critical for the enforcement of time-based policies and the correlation of logs and audit records with other systems. If an illicit time source is used for synchronization, the integrity of system logs and the security of the system could be compromised. If the configuration files controlling time synchronization are not protected, unauthorized modifications could result in the failure of time synchronization.
STIG Date
HP-UX 11.23 Security Technical Implementation Guide 2015-12-02

Details

Check Text ( C-36243r1_chk )
Verify the NTP configuration file has no extended ACL.
# ls -lL /etc/ntp.conf
If the permissions include a "+" the file has an extended ACL and this is a finding.
Fix Text (F-31500r1_fix)
Remove the optional ACL from the file.
# chacl -z /etc/ntp.conf