Check: SLES-15-030520
SUSE Linux Enterprise Server 15 STIG:
SLES-15-030520
(in versions v2 r3 through v1 r1)
Title
The SUSE operating system must generate audit records for all uses of the delete_module system call. (Cat II impact)
Discussion
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
Check Content
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. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix Text
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
Additional Identifiers
Rule ID: SV-234951r958412_rule
Vulnerability ID: V-234951
Group Title: SRG-OS-000037-GPOS-00015
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000130 |
Ensure that audit records contain information that establishes what type of event occurred. |
| CCI-000169 |
Provide audit record generation capability for the event types the system is capable of auditing as defined in AU-2 a on organization-defined information system components. |
| CCI-000172 |
Generate audit records for the event types defined in AU-2 c that include the audit record content defined in AU-3. |
| CCI-002884 |
Log organization-defined audit events for nonlocal maintenance and diagnostic sessions. |