DISA STIGS Viewer

Finding ID	Version	Rule ID	IA Controls	Severity
V-269182	ALMA-09-011680	SV-269182r1050064_rule		Medium

Description

A core dump includes a memory image taken at the time the operating system terminates an application. The memory image could contain sensitive data and is generally useful only for developers trying to debug problems.

STIG	Date
CloudLinux AlmaLinux OS 9 Security Technical Implementation Guide	2025-05-22

Check Text (C-73213r1049273_chk)

Verify AlmaLinux OS 9 disables storing core dumps with the following commands: $ 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. Check that the configuration files are present to disable core dump storage. $ /usr/lib/systemd/systemd-sysctl --cat-config | egrep -v '^(#|;)' | grep -F kernel.core_pattern | tail -1 kernel.core_pattern = |/bin/false If "kernel.core_pattern" is not set to "|/bin/false" and is not documented with the ISSO as an operational requirement, or is missing, this is a finding.

Fix Text (F-73114r1049274_fix)

Configure AlmaLinux OS 9 to disable storing core dumps. Create a numbered *.conf file in /etc/sysctl.d/ with the following content: 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: $ sysctl –system