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os_sudoers_timestamp_type_configure Configure Sudoers Timestamp Type

NIST macOS Security Compliance Project Sequoia Guidance, Revision 4.0 (be5491f)
All changes in this version
first version loaded macOS

Title

Configure Sudoers Timestamp Type

Control

/usr/bin/sudo /usr/bin/sudo -V | /usr/bin/awk -F": " '/Type of authentication timestamp record/{print $2}'

Discussion

The file /etc/sudoers _MUST_ be configured to not include a timestamp_type of global or ppid and be configured for timestamp record types of tty.

This rule ensures that the "sudo" command will prompt for the administrator's password at least once in each newly opened terminal window. This prevents a malicious user from taking advantage of an unlocked computer or an abandoned logon session by bypassing the normal password prompt requirement.

Related controls

cm-5.1, ia-11

Fix

[source,bash]
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/usr/bin/find /etc/sudoers* -type f -exec sed -i '' '/timestamp_type/d; /!tty_tickets/d' '{}' \;
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