Title

The macOS system must require users to reauthenticate for privilege escalation when using the "sudo" command. (Cat II impact)

Discussion

Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When operating systems provide the capability to escalate a functional capability, it is critical the user reauthenticate. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158

Check Content

Verify the macOS system requires reauthentication when using the "sudo" command to elevate privileges with the following command: /usr/bin/sudo /usr/bin/grep -r "timestamp_timeout" /etc/sudoers* /etc/sudoers.d/<customfile>:Defaults timestamp_timeout=0 If conflicting results are returned, this is a finding. If "timestamp_timeout" is set to a negative number, is commented out, or no results are returned, this is a finding.

Fix Text

Configure the macOS system to require reauthentication when using the "sudo" command by creating a plain text file in the /private/etc/sudoers.d/ directory containing the following: Defaults timestamp_timeout=0

Additional Identifiers

Rule ID: SV-257239r922880_rule

Vulnerability ID: V-257239

Group Title: SRG-OS-000373-GPOS-00156

Expert Comments

CCIs tied to check.

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