Vulnerability-Lookup

GHSA-J9WF-VVM6-4R9W

Vulnerability from github – Published: 2022-02-08 21:50 – Updated: 2026-06-09 10:51

Summary

Unverified Ownership in Kubernetes

Details

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.

Severity

5.0 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "k8s.io/kubernetes"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.22.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-8554"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-283"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-12T21:42:11Z",
    "nvd_published_at": "2021-01-21T17:15:00Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-j9wf-vvm6-4r9w",
  "modified": "2026-06-09T10:51:30Z",
  "published": "2022-02-08T21:50:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8554"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kubernetes/kubernetes/issues/97076"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kubernetes/kubernetes/issues/97110"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rdb223e1b82e3d7d8e4eaddce8dd1ab87252e3935cc41c859f49767b6@%3Ccommits.druid.apache.org%3E"
    },
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      "url": "https://lists.apache.org/thread.html/rdb223e1b82e3d7d8e4eaddce8dd1ab87252e3935cc41c859f49767b6%40%3Ccommits.druid.apache.org%3E"
    },
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    },
    {
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      "url": "https://lists.apache.org/thread.html/rcafa485d63550657f068775801aeb706b7a07140a8ebbdef822b3bb3%40%3Ccommits.druid.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r1975078e44d96f2a199aa90aa874b57a202eaf7f25f2fde6d1c44942@%3Ccommits.druid.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r1975078e44d96f2a199aa90aa874b57a202eaf7f25f2fde6d1c44942%40%3Ccommits.druid.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r0c76b3d0be348f788cd947054141de0229af00c540564711e828fd40@%3Ccommits.druid.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r0c76b3d0be348f788cd947054141de0229af00c540564711e828fd40%40%3Ccommits.druid.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://kubernetes.io/blog/2026/05/26/reconciling-unfixed-kubernetes-cves"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/kubernetes-security-announce/c/iZWsF9nbKE8"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/kubernetes/kubernetes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Unverified Ownership in Kubernetes"
}

CVE-2020-8554 (GCVE-0-2020-8554)

Vulnerability from cvelistv5 – Published: 2021-01-21 17:09 – Updated: 2026-06-01 21:44

Title

Kubernetes man in the middle using LoadBalancer or ExternalIPs

Summary

Severity

6.3 (Medium)


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

CWE

CWE-283 - Unverified Ownership

Assigner

kubernetes mitre root

References

10 references

URL	Tags
https://kubernetes.io/blog/2026/05/26/reconciling…	x_refsource_MISC
https://groups.google.com/g/kubernetes-security-a…	x_refsource_MISC
https://github.com/kubernetes/kubernetes/issues/97076	x_refsource_MISC
https://lists.apache.org/thread.html/rcafa485d635…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r0c76b3d0be3…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rdb223e1b82e…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r1975078e44d…	mailing-listx_refsource_MLIST
https://www.oracle.com//security-alerts/cpujul2021.html	x_refsource_MISC
https://www.oracle.com/security-alerts/cpujan2022.html	x_refsource_MISC
https://www.oracle.com/security-alerts/cpuapr2022.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Kubernetes	Kubernetes	Affected: 0 , < * (semver)

Date Public

2020-12-07 00:00

Credits

Etienne Champetier (@champtar) of Anevia

Show details on NVD website

JSON

To clipboard

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            "integrityImpact": "LOW",
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          "value": "To restrict the use of external IPs we are providing an admission webhook container: k8s.gcr.io/multitenancy/externalip-webhook:v1.0.0. The source code and deployment instructions are published at https://github.com/kubernetes-sigs/externalip-webhook.\n\nAlternatively, external IPs can be restricted using OPA Gatekeeper. A sample ConstraintTemplate and Constraint can be found here: https://github.com/open-policy-agent/gatekeeper-library/tree/master/library/general/externalip."
        }
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    "datePublished": "2021-01-21T17:09:21.169Z",
    "dateReserved": "2020-02-03T00:00:00.000Z",
    "dateUpdated": "2026-06-01T21:44:19.351Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.