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


Overview

Finding ID Version Rule ID IA Controls Severity
V-77375 SLES-12-020500 SV-92071r2_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, SRG-OS-000458-GPOS-00203
STIG Date
SLES 12 Security Technical Implementation Guide 2018-09-27

Details

Check Text ( C-76931r2_chk )
Verify the SUSE operating system generates an audit record for all uses of the "truncate" command.

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 truncate /etc/audit/audit.rules


-a always,exit -F arch=b32 -S truncate -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access
-a always,exit -F arch=b64 -S truncate -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access

-a always,exit -F arch=b32 -S truncate -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access
-a always,exit -F arch=b64 -S truncate -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access

If the command does not return any output, this is a finding.
Fix Text (F-84017r2_fix)
Configure the SUSE operating system to generate an audit record for all uses of the "truncate" command.

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


-a always,exit -F arch=b32 -S truncate -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access
-a always,exit -F arch=b64 -S truncate -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access

-a always,exit -F arch=b32 -S truncate -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access
-a always,exit -F arch=b64 -S truncate -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access

The audit daemon must be restarted for the changes to take effect.

# sudo systemctl restart auditd.service