Ingress-nginx custom snippets allows retrieval of ingress-nginx serviceaccount token and secrets across all namespaces
CVE-2021-25742

7.6HIGH

Key Information:

Vendor

Kubernetes
Status
Kubernetes Ingress-nginx
Vendor
CVE Published:
29 October 2021

What is CVE-2021-25742?

A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use the custom snippets feature to obtain all secrets in the cluster.

Affected Version(s)

Kubernetes ingress-nginx <= 0.49.0

Kubernetes ingress-nginx <= 1.0.0

References

https://groups.google.com/g/kubernetes-security-announce/...
x_refsource_MISC
https://github.com/kubernetes/ingress-nginx/issues/7837
x_refsource_MISC
https://security.netapp.com/advisory/ntap-20211203-0001/
x_refsource_CONFIRM

CVSS V3.1

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mitch Hulscher
.