UCF STIG Viewer Logo
Changes are coming to https://stigviewer.com. Take our survey to help us understand your usage and how we can better serve you in the future.
Take Survey

IBM z/OS PARMLIB CLOCKxx must have the Accuracy PARM properly coded.


Overview

Finding ID Version Rule ID IA Controls Severity
V-98259 RACF-OS-000200 SV-107363r1_rule Medium
Description
Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. Synchronizing internal information system clocks provides uniformity of time stamps for information systems with multiple system clocks and systems connected over a network. Organizations should consider setting time periods for different types of systems (e.g., financial, legal, or mission-critical systems). Organizations should also consider endpoints that may not have regular access to the authoritative time server (e.g., mobile, teleworking, and tactical endpoints). This requirement is related to the comparison done every 24 hours in SRG-OS-000355 because a comparison must be done in order to determine the time difference.
STIG Date
IBM z/OS RACF Security Technical Implementation Guide 2020-06-29

Details

Check Text ( C-97095r1_chk )
Refer to the CLOCKxx member of PARMLIB.

If the ACCURACY parm is not coded, this is a finding.

If the ACCURACY parm is coded to "1000", this is not a finding.
Fix Text (F-103935r1_fix)
Define the CLOCKxx statement to include the ACCURACY parm set to "1000".