Successful/unsuccessful attempts to modify categories of information (e.g., classification levels) must generate audit records.

From SLES 12 Security Technical Implementation Guide

Part of SRG-OS-000037-GPOS-00015

Associated with: CCI-000130 CCI-000169 CCI-000172 CCI-002884

SV-92097r2_rule Successful/unsuccessful attempts to modify categories of information (e.g., classification levels) must generate audit records.

Vulnerability discussion

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

Check content

Verify audit records are generated when successful/unsuccessful attempts to modify categories of information (e.g., classification levels) occur. Check that 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 'chcon' /etc/audit/audit.rules -a always,exit -F arch=b32 path=/usr/bin/chcon -F perm=x -F auid>=500 -F auid!=4294967295 -k prim_mod -a always,exit -F arch=b64 path=/usr/bin/chcon -F perm=x -F auid>=500 -F auid!=4294967295 -k prim_mod If command does not return any output, this is a finding.

Fix text

Configure the SUSE operating system to generate audit records when successful/unsuccessful attempts to modify categories of information (e.g., classification levels) occur. Add or update the following rule in the "/etc/audit/audit.rules" file: -a always,exit -F arch=b32 path=/usr/bin/chcon -F perm=x -F auid>=500 -F auid!=4294967295 -k prim_mod -a always,exit -F arch=b64 path=/usr/bin/chcon -F perm=x -F auid>=500 -F auid!=4294967295 -k prim_mod The audit daemon must be restarted for the changes to take effect. # sudo systemctl restart auditd.service

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