RHEL 9 must disable core dumps for all users.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-257814	RHEL-09-213095	SV-257814r925429_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
Red Hat Enterprise Linux 9 Security Technical Implementation Guide	2023-12-01

Details

Check Text ( C-61555r925427_chk )
Verify RHEL 9 disables core dumps for all users by issuing the following command: $ grep -r -s core /etc/security/limits.conf /etc/security/limits.d/.conf /etc/security/limits.conf: hard core 0 This can be set as a global domain (with the * wildcard) but may be set differently for multiple domains. If the "core" item is missing, commented out, or the value is anything other than "0" and the need for core dumps is not documented with the information system security officer (ISSO) as an operational requirement for all domains that have the "core" item assigned, this is a finding.

Check Text ( C-61555r925427_chk )

Verify RHEL 9 disables core dumps for all users by issuing the following command:

$ grep -r -s core /etc/security/limits.conf /etc/security/limits.d/*.conf

/etc/security/limits.conf:* hard core 0

This can be set as a global domain (with the * wildcard) but may be set differently for multiple domains.

If the "core" item is missing, commented out, or the value is anything other than "0" and the need for core dumps is not documented with the information system security officer (ISSO) as an operational requirement for all domains that have the "core" item assigned, this is a finding.

Fix Text (F-61479r925428_fix)
Configure the operating system to disable core dumps for all users. Add the following line to the top of the /etc/security/limits.conf or in a single ".conf" file defined in /etc/security/limits.d/: * hard core 0