fix(PROJ-55): Tenant-Isolation für Rolle "auditor" + Audit-Log korrigieren
Kritischer Sicherheitsbug: Auditoren mit zugewiesenem Tenant sahen Mails und Audit-Log-Einträge anderer Tenants (DSGVO-relevant). auditor wird jetzt analog zu domain_auditor pro Tenant gescoped, sofern tenant_id gesetzt ist (Abwärtskompatibilität: ohne tenant_id bleibt der bisherige globale Zugriff erhalten). Betrifft Mail-Suche, Mail-Detailzugriff, Export, eDiscovery, Threads, OCR sowie das Audit-Log (DB + tamper-evidentes Flat-File), inkl. Befüllung von tenant_id an allen Audit-Log-Schreibstellen.
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@@ -38,8 +38,10 @@ func (s *Server) handleGetOCRText(w http.ResponseWriter, r *http.Request) {
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}
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}
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// Auditor: only mails with no tenant assignment.
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if sess.Role == userstore.RoleAuditor {
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// Global auditor (no tenant_id): only mails with no tenant assignment.
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// A tenant-scoped auditor is already constrained by the tenant-isolation
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// block above (sess.TenantID != nil) — PROJ-55.
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if auditorIsGlobal(sess) {
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ok, err := s.store.IsWithoutTenant(r.Context(), id)
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if err != nil || !ok {
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writeError(w, http.StatusForbidden, "access denied")
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@@ -143,6 +145,7 @@ func (s *Server) handleGetOCRText(w http.ResponseWriter, r *http.Request) {
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s.audlog.Log(audit.Entry{
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EventType: audit.EventOCRDownload,
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Username: sess.Username,
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TenantID: sess.TenantID,
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IPAddress: s.remoteIP(r),
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MailID: id,
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Success: true,
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