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

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECLP-1

Associated with: CCI-000009

SV-38680r1_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

Examine the sugroups of the root user. Generally only users in the adm group should have su to root capacity. Procedure: #lsuser -a sugroups root If this is blank or ALL, this is a finding.

Fix text

Use the chsec command to only allow users in the adm group to su to root. #chsec -f /etc/security/user -s root -a sugroups=adm

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