CVE-2020-8554 - CVE House
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Status published Medium CVE-2020-8554

Kubernetes man in the middle using LoadBalancer or ExternalIPs

Vulnerability Description

Kubernetes API server in all versions allow an attacker who is able to create a ClusterIP service and set the spec.externalIPs field, to intercept traffic to that IP address. Additionally, an attacker who is able to patch the status (which is considered a privileged operation and should not typically be granted to users) of a LoadBalancer service can set the status.loadBalancer.ingress.ip to similar effect.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Etienne Champetier (@champtar) of Anevia

References

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Affected Vendor

Affected Software

Kubernetes
Vulnerable Versions:
0

Timeline

Official Publish: January 21st, 2021
Last Modified: June 1st, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Weaknesses (CWE)

CWE-283

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.