CVE-2021-25746 Information

Description

A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use .metadata.annotations in an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration that credential has access to all secrets in the cluster.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Reference

https://groups.google.com/g/kubernetes-security-announce/c/hv2-SfdqcfQ https://github.com/kubernetes/ingress-nginx/issues/8503

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

LOW

Base Score

NONE

Base Severity

7.1