The SUSE operating system must generate audit records for all uses of the crontab command.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-77417	SLES-12-020710	SV-92113r2_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. Audit records can be generated from various components within the information system (e.g., module or policy filter). Satisfies: SRG-OS-000037-GPOS-00015, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215

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. Audit records can be generated from various components within the information system (e.g., module or policy filter). Satisfies: SRG-OS-000037-GPOS-00015, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215

STIG	Date
SLES 12 Security Technical Implementation Guide	2018-09-27

Details

Check Text ( C-76973r2_chk )
Verify an audit record is generated for all uses of the "crontab" command. Check for the following command call is being audited by performing the following command to check the file system rules in "/etc/audit/audit.rules": # sudo grep -i 'crontab' /etc/audit/audit.rules -a always,exit -F arch=b32 path=/usr/bin/crontab -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged-crontab -a always,exit -F arch=b64 path=/usr/bin/crontab -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged-crontab If command does not return any output, this is a finding.

Check Text ( C-76973r2_chk )

Verify an audit record is generated for all uses of the "crontab" command.

Check for the following command call is being audited by performing the following command to check the file system rules in "/etc/audit/audit.rules":

# sudo grep -i 'crontab' /etc/audit/audit.rules

-a always,exit -F arch=b32 path=/usr/bin/crontab -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged-crontab
-a always,exit -F arch=b64 path=/usr/bin/crontab -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged-crontab

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

Fix Text (F-84057r2_fix)
Configure the SUSE operating system to generate an audit record for all uses of the "crontab" command. Add or update the following rules to "/etc/audit/audit.rules": -a always,exit -F arch=b32 path=/usr/bin/crontab -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged-crontab -a always,exit -F arch=b64 path=/usr/bin/crontab -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged-crontab The audit daemon must be restarted for the changes to take effect. # sudo systemctl restart auditd.service

Fix Text (F-84057r2_fix)

Configure the SUSE operating system to generate an audit record for all uses of the "crontab" command.

Add or update the following rules to "/etc/audit/audit.rules":

-a always,exit -F arch=b32 path=/usr/bin/crontab -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged-crontab
-a always,exit -F arch=b64 path=/usr/bin/crontab -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged-crontab

The audit daemon must be restarted for the changes to take effect.

# sudo systemctl restart auditd.service