Title

RHEL 9 must define default permissions for all authenticated users in such a way that the user can only read and modify their own files. (Cat II impact)

Discussion

Setting the most restrictive default permissions ensures that when new accounts are created, they do not have unnecessary access.

Check Content

Verify RHEL 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 "/etc/login.defs" file, the Severity is raised to a CAT I. # grep -i 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.

Fix Text

Configure RHEL 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

Additional Identifiers

Rule ID: SV-258074r926209_rule

Vulnerability ID: V-258074

Group Title: SRG-OS-000480-GPOS-00228

Expert Comments

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