Title

SLEM 5 must restrict privilege elevation to authorized personnel. (Cat II impact)

Discussion

The sudo command allows a user to execute programs with elevated (administrator) privileges. It prompts the user for their password and confirms the request to execute a command by checking a file, called sudoers. If the "sudoers" file is not configured correctly, any user defined on the system can initiate privileged actions on the target system.

Check Content

Verify the "sudoers" file restricts sudo access to authorized personnel with the following command: > sudo grep -iw 'ALL' /etc/sudoers /etc/sudoers.d/* root ALL=(ALL) ALL If "ALL ALL=(ALL) ALL" or "ALL ALL=(ALL:ALL) ALL" entries are returned, this is a finding.

Fix Text

Remove the following entries from the "/etc/sudoers" file: ALL ALL=(ALL) ALL ALL ALL=(ALL:ALL) ALL

Additional Identifiers

Rule ID: SV-261375r996562_rule

Vulnerability ID: V-261375

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

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