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Check: RHEL-09-232085

RHEL 9 STIG: RHEL-09-232085 (in versions v1 r3 through v1 r1)

Title

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

Fix Text

Change the mode of the file "/etc/shadow-" to "0000" by running the following command: $ sudo chmod 0000 /etc/shadow-

Additional Identifiers

Rule ID: SV-257897r925678_rule

Vulnerability ID: V-257897

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

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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