RHEL 8 must disable the kernel.core_pattern.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-230311	RHEL-08-010671	SV-230311r627750_rule		Medium

Description
It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

STIG	Date
Red Hat Enterprise Linux 8 Security Technical Implementation Guide	2021-03-04

Details

Check Text ( C-32980r567679_chk )
Verify RHEL 8 disables storing core dumps with the following commands: $ sudo sysctl kernel.core_pattern kernel.core_pattern = |/bin/false If the returned line does not have a value of "|/bin/false", or a line is not returned and the need for core dumps is not documented with the Information System Security Officer (ISSO) as an operational requirement, this is a finding.

Fix Text (F-32955r567680_fix)
Configure RHEL 8 to disable storing core dumps by adding the following line to a file in the "/etc/sysctl.d" directory: kernel.core_pattern = |/bin/false The system configuration files need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command: $ sudo sysctl --system