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The SUSE operating system must generate audit records for all uses of the delete_module system call.


Finding ID Version Rule ID IA Controls Severity
V-234951 SLES-15-030520 SV-234951r854258_rule Medium
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, SRG-OS-000471-GPOS-00216, SRG-OS-000477-GPOS-00222
SUSE Linux Enterprise Server 15 Security Technical Implementation Guide 2022-12-07


Check Text ( C-38139r619122_chk )
Verify the SUSE operating system generates an audit record for all uses of the "delete_module" system call.

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

> sudo auditctl -l | grep -w 'delete_module'

-a always,exit -F arch=b32 -S delete_module -F auid>=1000 -F auid!=-1 -k unload_module
-a always,exit -F arch=b64 -S delete_module -F auid>=1000 -F auid!=-1 -k unload_module

If both the "b32" and "b64" audit rules are not defined for the "unload_module" syscall, this is a finding.

The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix Text (F-38102r619123_fix)
Configure the SUSE operating system to generate an audit record for all uses of the "delete_module" system call.

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

-a always,exit -F arch=b32 -S delete_module -F auid>=1000 -F auid!=4294967295 -k unload_module
-a always,exit -F arch=b64 -S delete_module -F auid>=1000 -F auid!=4294967295 -k unload_module

To reload the rules file, restart the audit daemon

> sudo systemctl restart auditd.service

or issue the following command:

> sudo augenrules --load