RHEL 9 /etc/gshadow file must have mode 0000 or less permissive to prevent unauthorized access.

STIG ID: RHEL-09-232065  |  SRG: SRG-OS-000480-GPOS-00227 |  Severity: medium |  CCI: CCI-000366 |  Vulnerability Id: V-257893

Vulnerability Discussion

The "/etc/gshadow" file contains group password hashes. Protection of this file is critical for system security.

Check

Verify that the "/etc/gshadow" file has mode "0000" with the following command:

$ sudo stat -c "%a %n" /etc/gshadow

0 /etc/gshadow

If a value of "0" is not returned, this is a finding.

Fix

Change the mode of the file "/etc/gshadow" to "0000" by running the following command:

$ sudo chmod 0000 /etc/gshadow
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