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RHEL-10-400295 RHEL 10 must enforce mode "0000" for "/etc/shadow" to prevent unauthorized access.

DISA STIG library V1R3
All changes in this version
first version loaded CAT II

Maps to AC-3 via CCI-000213

Title

RHEL 10 must enforce mode "0000" for "/etc/shadow" to prevent unauthorized access.

Control

Verify RHEL 10 is configured so that the "/etc/shadow" file has mode "0000" with the following command: $ sudo stat -c "%a %n" /etc/shadow 0 /etc/shadow If a value of "0" is not returned, this is a finding.

Discussion

The "/etc/shadow" file contains the list of local system accounts and stores password hashes. Protection of this file is critical for system security. Failure to give ownership of this file to "root" provides the designated owner with access to sensitive information, which could weaken the system security posture.

Related controls

CCI-000213

Fix

Configure RHEL 10 to enforce mode "0000" for "/etc/shadow" to prevent unauthorized access. Change the mode of the file "/etc/shadow" to "0000" by running the following command: $ sudo chmod 0000 /etc/shadow