Title

TOSS must disable account identifiers (individuals, groups, roles, and devices) after 35 days of inactivity. (Cat II impact)

Discussion

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. Operating systems need to track periods of inactivity and disable application identifiers after 35 days of inactivity.

Check Content

Verify the account identifiers (individuals, groups, roles, and devices) are disabled after 35 days of inactivity with the following command: Check the account inactivity value by performing the following command: $ sudo grep -i inactive /etc/default/useradd INACTIVE=35 If "INACTIVE" is set to "-1", a value greater than "35", or is commented out, this is a finding.

Fix Text

Configure TOSS to disable account identifiers after 35 days of inactivity after the password expiration. Run the following command to change the configuration for useradd: $ sudo useradd -D -f 35 DOD recommendation is 35 days, but a lower value is acceptable. The value "-1" will disable this feature, and "0" will disable the account immediately after the password expires.

Additional Identifiers

Rule ID: SV-252953r986584_rule

Vulnerability ID: V-252953

Group Title: SRG-OS-000118-GPOS-00060

Expert Comments

CCIs tied to check.

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