Kubernetes ingress-nginx Compromise of auth via subset/superset namespace names
CVE-2020-8553

5.9MEDIUM

Key Information:

Vendor

Kubernetes
Status
Ingress-nginx
Vendor
CVE Published:
29 July 2020

What is CVE-2020-8553?

The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and to read and create ingress objects to overwrite the password file of another ingress which uses nginx.ingress.kubernetes.io/auth-type: basic and which has a hyphenated namespace or secret name.

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Deploy the Patch

Affected Version(s)

ingress-nginx < 0.28.0

References

https://github.com/kubernetes/ingress-nginx/issues/5126
x_refsource_CONFIRM

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Alex Orange
JSON
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