IvanHunters 64a3edff01 fix(api): prevent IDOR in TenantNamespace Get and Watch handlers
Fixed two IDOR vulnerabilities allowing authenticated users to access
metadata of any tenant namespace without proper authorization.

Changes:
- Added hasAccessToNamespace() for efficient single-namespace access checks
- Get() now verifies access before returning namespace metadata
- Watch() filters events per-namespace with proper authorization
- Returns NotFound (not Forbidden) to prevent tenant enumeration

Performance optimization:
- hasAccessToNamespace() lists RoleBindings only in target namespace
  instead of listing all cluster RoleBindings (order of magnitude faster)
- Watch handler logs authorization errors for security audit

Additional fixes:
- Handle ServiceAccount subjects with empty namespace correctly
- Add klog error logging for failed authorization checks

Signed-off-by: IvanHunters <xorokhotnikov@gmail.com>
2026-04-23 18:13:10 +03:00
2025-10-08 09:43:34 +05:00
2025-04-01 18:48:14 +02:00
2024-02-08 12:04:32 +01:00
2026-04-16 14:30:51 +05:00
2026-03-17 02:57:52 +05:00

Cozystack Cozystack

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Cozystack

Cozystack is a free platform and framework for building clouds.

Cozystack is a CNCF Sandbox Level Project that was originally built and sponsored by Ænix.

With Cozystack, you can transform a bunch of servers into an intelligent system with a simple REST API for spawning Kubernetes clusters, Database-as-a-Service, virtual machines, load balancers, HTTP caching services, and other services with ease.

Use Cozystack to build your own cloud or provide a cost-effective development environment.

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