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


Overview

Finding ID Version Rule ID IA Controls Severity
V-22308 GEN000850 SV-64327r1_rule ECLP-1 Low
Description
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.
STIG Date
Oracle Linux 5 Security Technical Implementation Guide 2015-03-26

Details

Check Text ( C-52739r2_chk )
Check /etc/pam.d/su uses pam_wheel.
# grep pam_wheel /etc/pam.d/su

If pam_wheel is not present, or is commented out, this is a finding.
Fix Text (F-54915r1_fix)
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.