Vulnerability Discussion

The file /etc/sudoers must include a timestamp_timout of 0.

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 or change user authenticators, it is critical the user reauthenticate.

Satisfies: SRG-OS-000373-GPOS-00156,SRG-OS-000373-GPOS-00157,SRG-OS-000373-GPOS-00158

Check

Verify the macOS system requires reauthentication when using the "sudo" command to elevate privileges with the following command:

/usr/bin/sudo /usr/bin/sudo -V | /usr/bin/grep -c "Authentication timestamp timeout: 0.0 minutes"

If the result is not "1", this is a finding.

Fix

Configure the macOS system to require reauthentication when using "sudo" with the following command:

/usr/bin/find /etc/sudoers* -type f -exec sed -i '' '/timestamp_timeout/d' '{}' \;
/bin/echo "Defaults timestamp_timeout=0" >> /etc/sudoers.d/mscp