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RHEL-09-412055 - RHEL 9 must define default permissions for the bash shell.

Information

The umask controls the default access mode assigned to newly created files. A umask of 077 limits new files to mode 600 or less permissive. Although umask can be represented as a four-digit number, the first digit representing special access modes is typically ignored or required to be "0". This requirement applies to the globally configured system defaults and the local interactive user defaults for each account on the system.

Satisfies: SRG-OS-000480-GPOS-00228, SRG-OS-000480-GPOS-00227

Solution

Configure RHEL 9 to define default permissions for all authenticated users using the bash shell.

Add or edit the lines for the "umask" parameter in the "/etc/bashrc" file to "077":

umask 077

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_RHEL_9_V2R8_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-258072r1184320_rule, STIG-ID|RHEL-09-412055, Vuln-ID|V-258072

Plugin: Unix

Control ID: 29b5672c8835a3313288dafc0b851c53b32d247d3ad11581260165ef66a7931f