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Cron logging must be implemented.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-215142 | UBTU-16-030460 | SV-215142r508033_rule | Medium |
| Description |
|---|
| Cron logging can be used to trace the successful or unsuccessful execution of cron jobs. It can also be used to spot intrusions into the use of the cron facility by unauthorized and malicious users. |
| STIG | Date |
|---|---|
| Canonical Ubuntu 16.04 LTS Security Technical Implementation Guide | 2020-09-03 |
Details
| Check Text ( C-16341r285294_chk ) |
|---|
| Verify that "rsyslog" is configured to log cron events. Check the configuration of "/etc/rsyslog.d/50-default.conf" for the cron facility with the following commands: Note: If another logging package is used, substitute the utility configuration file for "/etc/rsyslog.d/50-default.conf". # grep cron /etc/rsyslog.d/50-default.conf cron.* /var/log/cron.log If the commands do not return a response, check for cron logging all facilities by inspecting the "/etc/rsyslog.d/50-default.con" file: # more /etc/rsyslog.conf Look for the following entry: *.* /var/log/messages If "rsyslog" is not logging messages for the cron facility or all facilities, this is a finding. |
| Fix Text (F-16339r285295_fix) |
|---|
| Configure "rsyslog" to log all cron messages by adding or updating the following line to "/etc/rsyslog.d/50-default.conf": cron.* /var/log/cron.log Note: The line must be added before the following entry if it exists in "/etc/rsyslog.d/50-default.conf": *.* ~ # discards everything |