STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide Version: 2 Release: 6 Benchmark Date: 01 Jul 2026:

Successful/unsuccessful uses of the "unix_update" in TOSS must generate an audit record.

DISA Rule

SV-253046r991579_rule

Vulnerability Number

V-253046

Group Title

SRG-OS-000471-GPOS-00215

Rule Version

TOSS-04-031200

Severity

CAT II

CCI(s)

• CCI-000172 - Generate audit records for the event types defined in AU-2 c that include the audit record content defined in AU-3.

Weight

10

Fix Recommendation

Configure the audit system to generate an audit event for any successful/unsuccessful uses of the "unix_update" by adding or updating the following rule in the "/etc/audit/rules.d/audit.rules" file:

-a always,exit -F path=/usr/sbin/unix_update -F perm=x -F auid>=1000 -F auid!=unset -k privileged

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

Check Contents

Verify that an audit event is generated for any successful/unsuccessful use of the "unix_update" by performing the following command to check the file system rules in "/etc/audit/audit.rules":

$ sudo grep -w "unix_update" /etc/audit/audit.rules

-a always,exit -F path=/usr/sbin/unix_update -F perm=x -F auid>=1000 -F auid!=unset -k privileged

If the command does not return a line, or the line is commented out, this is a finding.

Vulnerability Number

V-253046

Documentable

False

Rule Version

TOSS-04-031200

Severity Override Guidance

Verify that an audit event is generated for any successful/unsuccessful use of the "unix_update" by performing the following command to check the file system rules in "/etc/audit/audit.rules":

$ sudo grep -w "unix_update" /etc/audit/audit.rules

-a always,exit -F path=/usr/sbin/unix_update -F perm=x -F auid>=1000 -F auid!=unset -k privileged

If the command does not return a line, or the line is commented out, this is a finding.

Check Content Reference

M

Target Key

5469