Title

SLEM 5 kernel core dumps must be disabled unless needed. (Cat II impact)

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 (DoS) by exhausting the available space on the target file system partition.

Check Content

Verify that SLEM 5 kernel core dumps are disabled unless needed with the following command: > systemctl status kdump.service kdump.service - Load kdump kernel and initrd Loaded: loaded (/usr/lib/systemd/system/kdump.service; disabled; vendor preset: disabled) Active: inactive (dead) If "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 SLEM 5 kernel core dumps are not required, disable the "kdump" service with the following command: > sudo systemctl disable kdump.service If kernel core dumps are required, document the need with the ISSO.

Additional Identifiers

Rule ID: SV-261270r996860_rule

Vulnerability ID: V-261270

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.