The Ubuntu operating system must generate records for successful/unsuccessful uses of init_module or finit

The Ubuntu operating system must generate records for successful/unsuccessful uses of init_module or finit_module syscalls.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-219296	UBTU-18-010387	SV-219296r648693_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-000064-GPOS-00033

STIG	Date
Canonical Ubuntu 18.04 LTS Security Technical Implementation Guide	2021-03-10

Details

Check Text ( C-21021r305216_chk )
Verify if the Ubuntu operating system is configured to audit the "init_module" and "finit_module" syscalls, by running the following command: # sudo auditctl -l \| grep -E 'init_module\|finit_module' -a always,exit -F arch=b64 -S init_module -S finit_module -F key=modules -a always,exit -F arch=b32 -S init_module -S finit_module -F key=modules If the command does not return lines that match the example or the lines are commented out, this is a finding. Notes: For 32-bit architectures, only the 32-bit specific output lines from the commands are required. The '-k' allows for specifying an arbitrary identifier and the string after it does not need to match the example output above.

Check Text ( C-21021r305216_chk )

Verify if the Ubuntu operating system is configured to audit the "init_module" and "finit_module" syscalls, by running the following command:

# sudo auditctl -l | grep -E 'init_module|finit_module'

-a always,exit -F arch=b64 -S init_module -S finit_module -F key=modules
-a always,exit -F arch=b32 -S init_module -S finit_module -F key=modules

If the command does not return lines that match the example or the lines are commented out, this is a finding.

Notes:
For 32-bit architectures, only the 32-bit specific output lines from the commands are required.
The '-k' allows for specifying an arbitrary identifier and the string after it does not need to match the example output above.

Fix Text (F-21020r305217_fix)
Configure the audit system to generate an audit event for any use of the "init_module" or "finit_module" system calls. Add or update the following rules in the "/etc/audit/rules.d/stig.rules" file: -a always,exit -F arch=b32 -S init_module -S finit_module -F key=modules -a always,exit -F arch=b64 -S init_module -S finit_module -F key=modules Notes: For 32-bit architectures, only the 32-bit specific entries are required. The "root" account must be used to view/edit any files in the /etc/audit/rules.d/ directory. In order to reload the rules file, issue the following command: # sudo augenrules --load

Fix Text (F-21020r305217_fix)

Configure the audit system to generate an audit event for any use of the "init_module" or "finit_module" system calls.

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

-a always,exit -F arch=b32 -S init_module -S finit_module -F key=modules
-a always,exit -F arch=b64 -S init_module -S finit_module -F key=modules

Notes: For 32-bit architectures, only the 32-bit specific entries are required.
The "root" account must be used to view/edit any files in the /etc/audit/rules.d/ directory.

In order to reload the rules file, issue the following command:

# sudo augenrules --load