RHEL 9 must configure SELinux context type to allow the use of a nondefault faillock tally directory.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-258080 | RHEL-09-431020 | SV-258080r1045162_rule | Medium |
| Description |
| Not having the correct SELinux context on the faillock directory may lead to unauthorized access to the directory. |
| STIG | Date |
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2024-12-04 |
Details
| Check Text (C-61821r1045160_chk) |
| Verify the location of the nondefault tally directory for the pam_faillock module with the following command: Note: If the system does not have SELinux enabled and enforcing a targeted policy, or if the pam_faillock module is not configured for use, this requirement is Not Applicable. $ sudo grep -w dir /etc/security/faillock.conf dir = /var/log/faillock Check the security context type of the nondefault tally directory with the following command: $ ls -Zd /var/log/faillock unconfined_u:object_r:faillog_t:s0 /var/log/faillock If the security context type of the nondefault tally directory is not "faillog_t", this is a finding. |
| Fix Text (F-61745r1045161_fix) |
| Configure RHEL 9 to allow the use of a nondefault faillock tally directory while SELinux enforces a targeted policy. First enable the feature using the following command: $ sudo authselect enable-feature with-faillock Create a nondefault faillock tally directory (if it does not already exist) with the following example: $ sudo mkdir /var/log/faillock Then add/modify the "/etc/security/faillock.conf" file to match the following line: dir = /var/log/faillock Update the /etc/selinux/targeted/contexts/files/file_contexts.local with "faillog_t" context type for the nondefault faillock tally directory with the following command: $ sudo semanage fcontext -a -t faillog_t "/var/log/faillock(/.*)?" Next, update the context type of the nondefault faillock directory/subdirectories and files with the following command: $ sudo restorecon -R -v /var/log/faillock |