Account identifiers (individuals, groups, roles, and devices) must disabled after 35 days of inactivity.

From Canonical Ubuntu 16.04 Security Technical Implementation Guide

Associated with: CCI-000795

SV-90165r3_rule Account identifiers (individuals, groups, roles, and devices) must disabled after 35 days of inactivity.

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

Fix text

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 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.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.