cis-ubuntu1804-v220-5-1-1-1-2

DevOps & Security

Ensure systemd-journal-remote is configured

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5.1.1.1.2 Ensure systemd-journal-remote is configured (Manual)

Profile

Level: 1 - Server
Level: 1 - Workstation
Assessment Status: Manual

Description

Journald (via systemd-journal-remote) supports the ability to send log events it gathers to a remote log host or to receive messages from remote hosts, thus enabling centralised log management.

Rationale

Storing log data on a remote host protects log integrity from local attacks. If an attacker gains root access on the local system, they could tamper with or remove log data that is stored on the local system.

Audit Procedure

Command Line

Verify systemd-journal-remote is configured. Run the following command:

grep -P "^ *URL=|^ *ServerKeyFile=|^ *ServerCertificateFile=|^ *TrustedCertificateFile=" /etc/systemd/journal-upload.conf

Verify the output matches per your environments certificate locations and the URL of the log server. Example:

URL=192.168.50.42
ServerKeyFile=/etc/ssl/private/journal-upload.pem
ServerCertificateFile=/etc/ssl/certs/journal-upload.pem
TrustedCertificateFile=/etc/ssl/ca/trusted.pem

Expected Result

Output should show URL, ServerKeyFile, ServerCertificateFile, and TrustedCertificateFile configured per your environment.

Remediation

Command Line

Edit the /etc/systemd/journal-upload.conf file and ensure the following lines are set per your environment:

URL=192.168.50.42
ServerKeyFile=/etc/ssl/private/journal-upload.pem
ServerCertificateFile=/etc/ssl/certs/journal-upload.pem
TrustedCertificateFile=/etc/ssl/ca/trusted.pem

Restart the service:

systemctl restart systemd-journal-upload

Default Value

systemd-journal-remote is not configured by default.

References

NIST SP 800-53 Rev. 5: AU-2, AU-12, SI-5

CIS Controls

Controls Version	Control
v8	8.2 Collect Audit Logs - Collect audit logs. Ensure that logging, per the enterprise's audit log management process, has been enabled across enterprise assets.
v7	6.2 Activate audit logging - Ensure that local logging has been enabled on all systems and networking devices.
v7	6.3 Enable Detailed Logging - Enable system logging to include detailed information such as an event source, date, user, timestamp, source addresses, destination addresses, and other useful elements.