Add new rule audit_rules_var_log_journal

- New rule for auditing /var/log/journal directory
- Satisfies STIG requirement UBTU-22-654190
- Uses template `audit_rules_watch`

components/audit.yml

@@ -260,6 +260,7 @@ rules:
 - audit_rules_usergroup_modification_opasswd
 - audit_rules_usergroup_modification_passwd
 - audit_rules_usergroup_modification_shadow
+- audit_rules_var_log_journal
 - audit_sudo_log_events
 - auditd_audispd_configure_remote_server
 - auditd_audispd_configure_sufficiently_large_partition

linux_os/guide/auditing/auditd_configure_rules/audit_rules_var_log_journal/rule.yml

@@ -0,0 +1,55 @@
+documentation_complete: true
+
+title: 'Ensure auditd Collects records for events that affect "/var/log/journal"'
+
+description: |-
+ Auditing the systemd journal files provides logging that can be used for
+ forensic purposes. Verify the system generates audit records for all events
+ that affect "/var/log/journal" by using the following command:
+
+ <pre>
+ $ sudo auditctl -l | grep journal
+ -w /var/log/journal/ -p wa -k systemd_journal
+ </pre>
+
+ If the command does not return a line that matches the example or the line
+ is commented out, this is a finding.
+
+ Note: The "-k" value is arbitrary and can be different from the example
+ output above.
+
+rationale: |-
+ Once an attacker establishes access to a system, the attacker often attempts
+ to create a persistent method of reestablishing access. One way to accomplish
+ this is for the attacker to modify system level binaries and their operation.
+ Auditing the systemd journal files provides logging that can be used for
+ forensic purposes.
+
+severity: medium
+
+references:
+ disa: CCI-000366
+ stigid@ubuntu2204: UBTU-22-654190
+
+ocil_clause: 'the command does not return a line, or the line is commented out'
+
+ocil: |-
+ Verify the system generates audit records for all events
+ that affect "/var/log/journal" by using the following command:
+
+ <pre>
+ $ sudo auditctl -l | grep journal
+ -w /var/log/journal/ -p wa -k systemd_journal
+ </pre>
+
+ If the command does not return a line that matches the example or the line
+ is commented out, this is a finding.
+
+fixtext: '{{{ fixtext_audit_file_watch_rule("/var/log/journal/", "systemd_journal", "/etc/audit/rules.d/audit.rules") }}}'
+
+srg_requirement: '{{{ srg_requirement_audit_file_watch_rule("/var/log/journal/") }}}'
+
+template:
+ name: audit_rules_watch
+ vars:
+ path: /var/log/journal/

products/ubuntu2204/profiles/stig.profile

@@ -622,9 +622,8 @@ selections:
  # UBTU-22-611055 The Ubuntu operating system must store only encrypted representations of passwords
  - set_password_hashing_algorithm_systemauth
 
- ### TODO (rule needed)
- # Analogous to audit_rules_login_events_lastlog
  # UBTU-22-654190 The Ubuntu operating system must generate audit records for all events that affect the systemd journal files
+ - audit_rules_var_log_journal
 
  ### TODO (rule needed)
  # Analogous to package_telnetd_removed