STIGQter: STIG Summary: Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 10 Mar 2021:

The Ubuntu operating system must disable account identifiers (individuals, groups, roles, and devices) after 35 days of inactivity.

DISA Rule

SV-238330r654165_rule

Vulnerability Number

V-238330

Group Title

SRG-OS-000118-GPOS-00060

Rule Version

UBTU-20-010409

Severity

CAT II

CCI(s)

• CCI-000795 - The organization manages information system identifiers by disabling the identifier after an organization-defined time period of inactivity.

Weight

10

Fix Recommendation

Configure the Ubuntu operating system to disable account identifiers after 35 days of inactivity after the password expiration.

Run the following command to change the configuration for adduser:

$ sudo useradd -D -f 35

Note: DoD recommendation is 35 days, but a lower value is acceptable. The value "0" will disable the account immediately after the password expires.

Check Contents

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 INACTIVE /etc/default/useradd

INACTIVE=35

If "INACTIVE" is not set to a value 0<[VALUE]<=35, or is commented out, this is a finding.

Vulnerability Number

V-238330

Documentable

False

Rule Version

UBTU-20-010409

Severity Override Guidance

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 INACTIVE /etc/default/useradd

INACTIVE=35

If "INACTIVE" is not set to a value 0<[VALUE]<=35, or is commented out, this is a finding.

Check Content Reference

M

Target Key

5318

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