IBM Power Ideas Portal
This portal is to open public enhancement requests against IBM Power Systems products, including IBM i. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (https://ideas.ibm.com).
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Welcome to the IBM Ideas Portal (https://www.ibm.com/ideas) - Use this site to find out additional information and details about the IBM Ideas process and statuses.
IBM Unified Ideas Portal (https://ideas.ibm.com) - Use this site to view all of your ideas, create new ideas for any IBM product, or search for ideas across all of IBM.
ideasibm@us.ibm.com - Use this email to suggest enhancements to the Ideas process or request help from IBM for submitting your Ideas.
An idea for the implementation could be to use RBAC domains. For example, if a user has a specific RBAC domain assigned, the RBAC domain could limit the list of users that a requester can SU to. A stanza-based file could list the stanza of an RBAC domain name and the values could be user ids. When a script/executable that is a privileged command in RBAC uses needs to su into a user account, the Kernel could check if the requester has a domain assigned that allows the requester to switch to the target user.
Example:
/etc/security/privsu
domainsu1:
sapadmin
fwadmin
domainsu2:
webadmin
dbadmin
A kernel privilege could be created, i.e. PV_SU_LIMIT, that is assigned as an innate privilege to a privileged command.
If a calling user runs the privileged command and the command performs a su, the domain is checked and if the target user of the su operation is listed in one of the assigned domains, the su succeeds.