STIGQter: STIG Summary: Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 10 Mar 2021:

The Ubuntu operating system must be configured so that audit log files are not read or write-accessible by unauthorized users.

DISA Rule

SV-238245r653910_rule

Vulnerability Number

V-238245

Group Title

SRG-OS-000057-GPOS-00027

Rule Version

UBTU-20-010122

Severity

CAT II

CCI(s)

• CCI-000162 - The information system protects audit information from unauthorized access.
• CCI-000163 - The information system protects audit information from unauthorized modification.

Weight

10

Fix Recommendation

Configure the audit log files to have a mode of "0600" or less permissive.

Determine where the audit logs are stored with the following command:

$ sudo grep -iw log_file /etc/audit/auditd.conf
log_file = /var/log/audit/audit.log

Using the path of the directory containing the audit logs, configure the audit log files to have a mode of "0600" or less permissive by using the following command:

$ sudo chmod 0600 /var/log/audit/*

Check Contents

Verify that the audit log files have a mode of "0600" or less permissive.

Determine where the audit logs are stored with the following command:

$ sudo grep -iw log_file /etc/audit/auditd.conf
log_file = /var/log/audit/audit.log

Using the path of the directory containing the audit logs, determine if the audit log files have a mode of "0600" or less by using the following command:

$ sudo stat -c "%n %a" /var/log/audit/*
/var/log/audit/audit.log 600

If the audit log files have a mode more permissive than "0600", this is a finding.

Vulnerability Number

V-238245

Documentable

False

Rule Version

UBTU-20-010122

Severity Override Guidance

Verify that the audit log files have a mode of "0600" or less permissive.

Determine where the audit logs are stored with the following command:

$ sudo grep -iw log_file /etc/audit/auditd.conf
log_file = /var/log/audit/audit.log

Using the path of the directory containing the audit logs, determine if the audit log files have a mode of "0600" or less by using the following command:

$ sudo stat -c "%n %a" /var/log/audit/*
/var/log/audit/audit.log 600

If the audit log files have a mode more permissive than "0600", this is a finding.

Check Content Reference

M

Target Key

5318

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