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Check: RHEL-09-232165

RHEL 9 STIG: RHEL-09-232165 (in versions v1 r3 through v1 r1)

Title

RHEL 9 /etc/shadow- file must be group-owned by root. (Cat II impact)

Discussion

The "/etc/shadow-" file is a backup file of "/etc/shadow", and as such, contains the list of local system accounts and password hashes. Protection of this file is critical for system security.

Check Content

Verify the group ownership of the "/etc/shadow-" file with the following command: $ sudo stat -c "%G %n" /etc/shadow- root /etc/shadow- If "/etc/shadow-" file does not have a group owner of "root", this is a finding.

Fix Text

Change the group of the file /etc/shadow- to root by running the following command: $ sudo chgrp root /etc/shadow-

Additional Identifiers

Rule ID: SV-257913r925726_rule

Vulnerability ID: V-257913

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000366	The organization implements the security configuration settings.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
CM-6	Configuration Settings