The system must restrict the ability to switch to the root user to members of a defined group.

From Red Hat Enterprise Linux 5 Security Technical Implementation Guide

Part of GEN000850

Associated with IA controls: ECLP-1

Associated with: CCI-000009

SV-37345r1_rule The system must restrict the ability to switch to the root user to members of a defined group.

Vulnerability discussion

Configuring a supplemental group for users permitted to switch to the root user prevents unauthorized users from accessing the root account, even with knowledge of the root credentials.

Check content

Fix text

Edit /etc/pam.d/su and uncomment or add a line such as "auth required pam_wheel.so". If necessary, create a "wheel" group and add administrative users to the group.

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