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V-230310

CAT II (Medium)

RHEL 8 must disable kernel dumps unless needed.

Rule ID

SV-230310r1155383_rule

STIG

Red Hat Enterprise Linux 8 Security Technical Implementation Guide

Version

V2R7

CCIs

CCI-000366

Discussion

Kernel core dumps may contain the full contents of system memory at the time of the crash. Kernel core dumps may consume a considerable amount of disk space and may result in denial of service by exhausting the available space on the target file system partition. RHEL 8 installation media presents the option to enable or disable the kdump service at the time of system installation.

Check Content

Verify RHEL 8 kernel core dumps are disabled unless needed with the following command:

$ sudo systemctl status kdump.service

o kdump.service - Crash recovery kernel arming
   Loaded: loaded (/usr/lib/systemd/system/kdump.service; disabled; vendor preset: enabled)
   Active: inactive (dead)

If the "kdump" service is active, ask the system administrator if the use of the service is required and documented with the information system security officer (ISSO).

If the service is active and is not documented, this is a finding.

Fix Text

If kernel core dumps are not required, disable the "kdump" service with the following command:

# systemctl disable kdump.service

If kernel core dumps are required, document the need with the ISSO.