CVE-2021-25746: Ingress-nginx directive injection via annotations
First published: Fri Apr 22 2022(Updated: )
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.
Credit: jordan@liggitt.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Kubernetes ingress-nginx | <1.2.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-25746?
CVE-2021-25746 is a security issue discovered in ingress-nginx that allows a user to obtain the credentials of the ingress-nginx controller.
How does CVE-2021-25746 impact Kubernetes ingress-nginx?
CVE-2021-25746 allows a user that can create or update ingress objects to access the credentials of the ingress-nginx controller.
What is the severity of CVE-2021-25746?
CVE-2021-25746 has a severity rating of 7.1 (high).
How can I fix CVE-2021-25746 in Kubernetes ingress-nginx?
To fix CVE-2021-25746, update ingress-nginx to a version higher than 1.2.0.
Where can I find more information about CVE-2021-25746?
More information about CVE-2021-25746 can be found in the references provided: [link 1], [link 2], [link 3].
- collector/nvd-index
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/references
- agent/severity
- agent/weakness
- agent/author
- agent/title
- agent/description
- agent/first-publish-date
- agent/tags
- agent/event
- vendor/kubernetes
- canonical/kubernetes ingress-nginx