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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-234941	SLES-15-030420	SV-234941r622137_rule		Medium

Description
Without generating audit records 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 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
SUSE Linux Enterprise Server 15 Security Technical Implementation Guide	2021-06-14

Details

Check Text ( C-38129r619092_chk )
Verify the SUSE operating system generates an audit record for all uses of the "chmod" command. Check that the command is being audited by performing the following command: > sudo auditctl -l \| grep -w '/usr/bin/chmod' -a always,exit -S all -F path=/usr/bin/chmod -F perm=x -F auid>=1000 -F auid!=-1 -k prim_mod If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.

Check Text ( C-38129r619092_chk )

Verify the SUSE operating system generates an audit record for all uses of the "chmod" command.

Check that the command is being audited by performing the following command:

> sudo auditctl -l | grep -w '/usr/bin/chmod'

-a always,exit -S all -F path=/usr/bin/chmod -F perm=x -F auid>=1000 -F auid!=-1 -k prim_mod

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

Note:
The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.

Fix Text (F-38092r619093_fix)
Configure the SUSE operating system to generate an audit record for all uses of the "chmod" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/chmod -F perm=x -F auid>=1000 -F auid!=4294967295 -k prim_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load

Fix Text (F-38092r619093_fix)

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

Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/bin/chmod -F perm=x -F auid>=1000 -F auid!=4294967295 -k prim_mod

To reload the rules file, restart the audit daemon

> sudo systemctl restart auditd.service

or issue the following command:

> sudo augenrules --load