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← Back to Canonical Ubuntu 24.04 LTS Security Technical Implementation Guide

V-270764

CAT II (Medium)

Ubuntu 24.04 LTS must configure the files used by the system journal to be owned by "root"

Rule ID

SV-270764r1184080_rule

STIG

Canonical Ubuntu 24.04 LTS Security Technical Implementation Guide

Version

V1R5

CCIs

CCI-001314

Discussion

Only authorized personnel are to be made aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify Ubuntu 24.04 LTS or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives. The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.

Check Content

Verify the /run/log/journal and /var/log/journal files are owned by "root" with the following command:

$ sudo find /run/log/journal /var/log/journal  -type f -exec stat -c "%n %U" {} \; 
/var/log/journal/d5745ad455d34fb8b6f78be37c1fcd3e/system.journal root
/var/log/journal/d5745ad455d34fb8b6f78be37c1fcd3e/user-1000@0005f97cd4a8c9b5-f088232c3718485a.journal~ root
/var/log/journal/d5745ad455d34fb8b6f78be37c1fcd3e/system@0005f97cd2a1e0a7-d58b848af46813a4.journal~ root
/var/log/journal/d5745ad455d34fb8b6f78be37c1fcd3e/system@0005f97cb900e501-55ea053b7f75ae1c.journal~ root
/var/log/journal/d5745ad455d34fb8b6f78be37c1fcd3e/user-1000.journal root

If any output returned is not owned by "root", this is a finding.

Fix Text

Configure the system to set the appropriate ownership to the files used by the systemd journal.

Create a drop-in file if it does not already exist with the following command:

$ sudo vi /etc/tmpfiles.d/zzz-systemd-stig.conf
 
Add or modify the following lines in the "/usr/lib/tmpfiles.d/zzz-systemd-stig.conf" file: 

Z /run/log/journal/%m ~0640 root systemd-journal - -
z /var/log/journal/%m 0640 root systemd-journal - -
z /var/log/journal/%m/system.journal 0640 root systemd-journal - -

Note: Restart the system for these settings to take effect.