Kernel core dumps must be disabled unless needed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22404	GEN003510	SV-64421r1_rule		Medium

Description
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. The kernel core dump process may increase the amount of time a system is unavailable due to a crash. Kernel core dumps can be useful for kernel debugging.

Description

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. The kernel core dump process may increase the amount of time a system is unavailable due to a crash. Kernel core dumps can be useful for kernel debugging.

STIG	Date
Oracle Linux 5 Security Technical Implementation Guide	2020-02-25

Details

Check Text ( C-52859r1_chk )
Verify the kdump service is not running. Procedure: # service kdump status If "Kdump is operational" is returned, this is a finding.

Fix Text (F-55039r1_fix)
Disable kdump. # service kdump stop # chkconfig kdump off