AlmaLinux OS 9 must define default permissions for PAM users.
An XCCDF Rule
Description
Setting the most restrictive default permissions ensures that when new accounts are created they do not have unnecessary access. With a UMASK of 077, files will be created with 0600 permissions (owner read/write only) and directories will have 0700 permissions (owner read/write/execute only).
- ID
- SV-269236r1050118_rule
- Version
- ALMA-09-017730
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Configure AlmaLinux OS 9 to define default permissions for all authenticated users so the user can only read and modify their own files.
Add or edit the following line at the top of /etc/pam.d/postlogin:
session optional pam_umask.so silent