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Overview

k8s.io/kubernetes/plugin/pkg/auth/authorizer/rbac/bootstrappolicy is a package rbac that implements the authorizer.Authorizer interface using roles base access control.

Affected versions of this package are vulnerable to Access Restriction Bypass. Endpoint & EndpointSlice permissions allow cross-Namespace forwarding. If a potential attacker can create or edit Endpoints or EndpointSlices in the Kubernetes API, they can potentially direct a LoadBalancer or Ingress implementation to expose backend IPs the attacker should not have access to.

Remediation

There is no fixed version for k8s.io/kubernetes/plugin/pkg/auth/authorizer/rbac/bootstrappolicy.

References

CVSS Score

3.1
low severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    Low
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    Low
  • Integrity
    None
  • Availability
    None
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Credit
Unknown
CVE
CVE-2021-25740
CWE
CWE-284
Snyk ID
SNYK-GOLANG-K8SIOKUBERNETESPLUGINPKGAUTHAUTHORIZERRBACBOOTSTRAPPOLICY-1318920
Disclosed
15 Jul, 2021
Published
15 Jul, 2021