The Red Hat Enterprise Linux operating system must audit all uses of the pam_timestamp

The Red Hat Enterprise Linux operating system must audit all uses of the pam_timestamp_check command.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-204558	RHEL-07-030810	SV-204558r833166_rule		Medium

Description
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. When a user logs on, the auid is set to the uid of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to -1. The auid representation is an unsigned 32-bit integer, which equals 4294967295. The audit system interprets -1, 4294967295, and "unset" in the same way.

Description

Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. When a user logs on, the auid is set to the uid of the account that is being authenticated. Daemons are not user sessions and have the loginuid set to -1. The auid representation is an unsigned 32-bit integer, which equals 4294967295. The audit system interprets -1, 4294967295, and "unset" in the same way.

STIG	Date
Red Hat Enterprise Linux 7 Security Technical Implementation Guide	2022-12-06

Details

Check Text ( C-4682r833164_chk )
Verify the operating system generates audit records when successful/unsuccessful attempts to use the "pam_timestamp_check" command occur. Check the auditing rules in "/etc/audit/audit.rules" with the following command: $ sudo grep -w "/usr/sbin/pam_timestamp_check" /etc/audit/audit.rules -a always,exit -F path=/usr/sbin/pam_timestamp_check -F perm=x -F auid>=1000 -F auid!=unset -k privileged-pam If the command does not return any output, this is a finding.

Check Text ( C-4682r833164_chk )

Verify the operating system generates audit records when successful/unsuccessful attempts to use the "pam_timestamp_check" command occur.

Check the auditing rules in "/etc/audit/audit.rules" with the following command:

$ sudo grep -w "/usr/sbin/pam_timestamp_check" /etc/audit/audit.rules

-a always,exit -F path=/usr/sbin/pam_timestamp_check -F perm=x -F auid>=1000 -F auid!=unset -k privileged-pam

If the command does not return any output, this is a finding.

Fix Text (F-4682r833165_fix)
Configure the operating system to generate audit records when successful/unsuccessful attempts to use the "pam_timestamp_check" command occur. Add or update the following rule in "/etc/audit/rules.d/audit.rules": -a always,exit -F path=/usr/sbin/pam_timestamp_check -F perm=x -F auid>=1000 -F auid!=unset -k privileged-pam The audit daemon must be restarted for the changes to take effect.