TOSS 5 must disable the kernel.core_pattern.

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.

Verify TOSS 5 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.

Configure TOSS 5 to disable storing core dumps.

Add or edit the following line in a system configuration file in the "/etc/sysctl.d/" directory:

kernel.core_pattern = |/bin/false

Reload the system configuration files for the changes to take effect.

$ sudo sysctl --system