zt_id_016 — Guest users have excessive directory permissions¶
Summary
Severity: High · Pillar: Identity · Chain role: ENABLER
Description¶
Guest users with assigned directory roles violate least-privilege principles. External identities should access resources through scoped entitlements, not broad directory roles that enable lateral movement and privilege escalation.
Mapping¶
| Framework | Control / Reference |
|---|---|
| NIST 800-53 | AC-6 |
| NIST 800-207 | Tenet 6 - Dynamic access policy and least privilege |
| CIS Azure | — |
| MITRE ATT&CK Technique | T1078.004 |
| MITRE ATT&CK Tactic | Privilege Escalation |
| Zero-Trust Tenet | Tenet 6 |
| Framework tags | nist-800-207, argus-zt |
Source¶
Rule defined at policies/azure/zt/identity/zt_id_016.rego.