cyberstrikeus CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 - Control 4.2.1.4
Profile
- Level: 1 - Server
- Level: 1 - Workstation
- Assessment Status: Automated
Description
rsyslog will create logfiles that do not already exist on the system. This setting controls what permissions will be applied to these newly created files.
Rationale
It is important to ensure that log files have the correct permissions to ensure that sensitive data is archived and protected.
Impact
None.
Audit Procedure
Run the following command and verify that every instance of $FileCreateMode is 0640 or more restrictive:
Command Line
grep ^\s*\$FileCreateMode /etc/rsyslog.conf /etc/rsyslog.d/*.conf
Expected Result
If $FileCreateMode is not found, the default value 0644 is used and at least one $FileCreateMode has to be added.
Remediation
Edit the /etc/rsyslog.conf and /etc/rsyslog.d/*.conf files and set every instance of $FileCreateMode to 0640 or more restrictive:
Command Line
# Add or update the following line in /etc/rsyslog.conf or /etc/rsyslog.d/*.conf:
$FileCreateMode 0640
Default Value
The default value for $FileCreateMode is 0644 if not explicitly set.
References
- See the rsyslog.conf(5) man page for more information.
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v7 | 5.1 Establish Secure ConfigurationsMaintain documented, standard security configuration standards for all authorized operating systems and software. |