cis-ubuntu2004-v300-6-2-3-3

DevOps & Security

Ensure journald is configured to send logs to rsyslog

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Source SKILL.md: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Operating_Systems/Ubuntu/CIS_Ubuntu_Linux_20.04_LTS_Benchmark_v3.0.0/cis-ubuntu2004-v300-6-2-3-3/SKILL.md

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6.2.3.3 Ensure journald is configured to send logs to rsyslog (Automated)

Profile

Level 1 - Server
Level 1 - Workstation

Description

Data from systemd-journald may be stored in volatile memory or persisted locally on the server. Utilities exist to accept remote export of systemd-journald logs, however, use of the rsyslog service provides a consistent means of log collection and export.

Rationale

IF - rsyslog is the preferred method for capturing logs, all logs of the system should be sent to it for further processing.

Note: This recommendation only applies if rsyslog is the chosen method for client side logging. Do not apply this recommendation if systemd-journald is used.

Audit Procedure

Command Line

IF - rsyslog is the preferred method for capturing logs

Run the following command to verify systemd-journald.service and rsyslog.service are loaded and active:

# systemctl list-units --type service | grep -P -- '(journald|rsyslog)'

Output should be similar to:

rsyslog.service                loaded active running System Logging Service
systemd-journald.service       loaded active running Journal Service

Run the following command to verify that logs are forwarded to rsyslog by setting ForwardToSyslog to yes in the systemd-journald configuration:

# grep -Psi "^ForwardToSyslog=yes" /etc/systemd/journal.conf /etc/systemd/journald.conf.d/*

Expected Result

ForwardToSyslog=yes

Remediation

Command Line

IF - Journald is the preferred method for capturing logs, this section and Recommendation should be skipped and the "Configure Journald" section followed.
IF - rsyslog is the preferred method for capturing logs:

Set the following parameter in the [Journal] section in /etc/systemd/journald.conf or a file in /etc/systemd/journald.conf.d/ ending in .conf:

ForwardToSyslog=yes

Note: If this setting appears in a canonically later file, or later in the same file, the setting will be overwritten.

Run to following command to update the parameters in the service: Restart systemd-journald.service:

# systemctl reload-or-restart systemd-journald.service

Default Value

ForwardToSyslog=no

References

NIST SP 800-53 Rev. 5: AC-3, AU-2, AU-4, AU-12, MP-2
SYSTEMD-JOURNALD.SERVICE(8)
JOURNALD.CONF(5)

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	8.2 Collect Audit Logs
v8	8.9 Centralize Audit Logs
v7	6.2 Activate audit logging
v7	6.3 Enable Detailed Logging
v7	6.5 Central Log Management

MITRE ATT&CK Mappings

Techniques / Sub-techniques	Tactics	Mitigations
T1070, T1070.002, T1562, T1562.006, T1565	TA0040	M1029