The Photon operating system must disable new accounts immediately upon password expiration.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-256511	SRG-OS-000118-GPOS-00060	PHTN-30-000035	SV-256511r982189_rule	2024-12-16	1

Description
Inactive identifiers pose a risk to systems and applications because attackers may exploit an inactive identifier and potentially obtain undetected access to the system. Owners of inactive accounts will not notice if unauthorized access to their user account has been obtained. Disabling inactive accounts ensures accounts that may not have been responsibly removed are not available to attackers who may have compromised their credentials.

Description

Inactive identifiers pose a risk to systems and applications because attackers may exploit an inactive identifier and potentially obtain undetected access to the system. Owners of inactive accounts will not notice if unauthorized access to their user account has been obtained. Disabling inactive accounts ensures accounts that may not have been responsibly removed are not available to attackers who may have compromised their credentials.

ℹ️ Check
At the command line, run the following command: # grep INACTIVE /etc/default/useradd Expected result: INACTIVE=0 If the output does not match the expected result, this is a finding.

✔️ Fix
Navigate to and open: /etc/default/useradd Remove an existing "INACTIVE" line and add the following line: INACTIVE=0