[v15] Fix active session filtering for legacy sessions #47563
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This code never worked correctly, but mostly went unnoticed because it is only triggered when using legacy roles prior to RoleV5. Prior to moderated sessions, RBAC for viewing active sessions was based on whether or not you could join a session as the OS login that is being used, along with a pseudo-resource of kind "ssh_session". With moderated sessions we introduced more flexible RBAC semantics that allow you to join sessions in different modes (peer, observer, moderator), even if you don't actually have permission to start sessions. In #11223 we decided that we need to support both types of RBAC checks (legacy checks against the "ssh_session" resource, and newer checks against the session_tracker and join_sessions policies). The code that was doing the legacy checks was flawed for two reasons: 1. It used (types.SessionTracker).GetKind() (which will always be "session_tracker") instead of (types.SessionTracker).GetSessionKind(). 2. When checking whether the session was SSH, it was checking for the legacy "ssh_session" value, instead of the "ssh" value that session trackers actually use.
rosstimothy
approved these changes
Oct 14, 2024
marcoandredinis
approved these changes
Oct 15, 2024
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Backport #47448 to branch/v15
changelog: fixed a bug that could allow users to list active sessions even when prohibited by RBAC.