STIGQter STIGQter: STIG Summary: Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide Version: 1 Release: 7 Benchmark Date: 01 Jul 2026:

AlmaLinux OS 9 must define default permissions for all authenticated users in such a way that the user can only read and modify their own files.

DISA Rule

SV-269235r1050117_rule

Vulnerability Number

V-269235

Group Title

SRG-OS-000480-GPOS-00228

Rule Version

ALMA-09-017620

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure AlmaLinux OS 9 to define default permissions for all authenticated users in such a way that the user can only read and modify their own files.

Add or edit the lines for the "UMASK" parameter in the "/etc/login.defs" file to "077":

UMASK 077

Check Contents

Verify AlmaLinux OS 9 defines default permissions for all authenticated users in such a way that the user can only read and modify their own files with the following command:

Note: If the value of the "UMASK" parameter is set to "000" in the "/etc/login.defs" file, the severity is raised to a CAT I.

$ grep UMASK /etc/login.defs

UMASK 077

If the value for the "UMASK" parameter is not "077", or the "UMASK" parameter is missing or is commented out, this is a finding.

Vulnerability Number

V-269235

Documentable

False

Rule Version

ALMA-09-017620

Severity Override Guidance

Verify AlmaLinux OS 9 defines default permissions for all authenticated users in such a way that the user can only read and modify their own files with the following command:

Note: If the value of the "UMASK" parameter is set to "000" in the "/etc/login.defs" file, the severity is raised to a CAT I.

$ grep UMASK /etc/login.defs

UMASK 077

If the value for the "UMASK" parameter is not "077", or the "UMASK" parameter is missing or is commented out, this is a finding.

Check Content Reference

M

Target Key

5664