Title

The Red Hat Enterprise Linux operating system must be configured so that users must provide a password for privilege escalation. (Cat II impact)

Discussion

Without re-authentication, 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 re-authenticate. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158

Check Content

Verify the operating system requires users to supply a password for privilege escalation. Check the configuration of the "/etc/sudoers" and "/etc/sudoers.d/*" files with the following command: # grep -i nopasswd /etc/sudoers /etc/sudoers.d/* If any occurrences of "NOPASSWD" are returned from the command and have not been documented with the Information System Security Officer (ISSO) as an organizationally defined administrative group utilizing MFA, this is a finding.

Fix Text

Configure the operating system to require users to supply a password for privilege escalation. Check the configuration of the "/etc/sudoers" file with the following command: # visudo Remove any occurrences of "NOPASSWD" tags in the file. Check the configuration of the /etc/sudoers.d/* files with the following command: # grep -i nopasswd /etc/sudoers.d/* Remove any occurrences of "NOPASSWD" tags in the file.

Additional Identifiers

Rule ID: SV-204429r603261_rule

Vulnerability ID: V-204429

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.