OL 8 default permissions must be defined in such a way that all authenticated users can read and modify only their own files.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-248719 | OL08-00-020351 | SV-248719r991590_rule | CCI-000366 | medium |
| Description | ||||
| Setting the most restrictive default permissions ensures that when new accounts are created, they do not have unnecessary access. | ||||
| STIG | Date | |||
| Oracle Linux 8 Security Technical Implementation Guide | 2025-05-13 | |||
Related Frameworks
4 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
CM-6
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1712 mappings
3.4.1
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.4.2
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000366
1.00
- DISA · 2 · disa_xccdf · related
Details
Check Text (C-248719r991590_chk)
Verify OL 8 defines default permissions for all authenticated users in such a way that the user can read and modify only their own files with the following command:
$ sudo grep -i "umask" /etc/login.defs
UMASK 077
If the "UMASK" variable is set to "000", this is a finding with the severity raised to a CAT I.
If the value of "UMASK" is not set to "077", "UMASK" is commented out, or "UMASK" is missing completely, this is a finding.
Fix Text (F-52107r779722_fix)
Configure OL 8 to define the default permissions for all authenticated users in such a way that the user can read and modify only their own files.
Edit the "UMASK" parameter in the "/etc/login.defs" file to match the example below:
UMASK 077