github - ghsa-v8hv-78vf-x9fr

GHSA-V8HV-78VF-X9FR

Vulnerability from github – Published: 2022-05-24 19:21 – Updated: 2022-07-13 00:01

Details

** DISPUTED ** Styra Open Policy Agent (OPA) Gatekeeper through 3.7.0 mishandles concurrency, sometimes resulting in incorrect access control. The data replication mechanism allows policies to access the Kubernetes cluster state. During data replication, OPA/Gatekeeper does not wait for the replication to finish before processing a request, which might cause inconsistencies between the replicated resources in OPA/Gatekeeper and the resources actually present in the cluster. Inconsistency can later be reflected in a policy bypass. NOTE: the vendor disagrees that this is a vulnerability, because Kubernetes states are only eventually consistent.

Severity ?

5.3 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-43979"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-670",
      "CWE-755"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-11-17T19:15:00Z",
    "severity": "MODERATE"
  },
  "details": "** DISPUTED ** Styra Open Policy Agent (OPA) Gatekeeper through 3.7.0 mishandles concurrency, sometimes resulting in incorrect access control. The data replication mechanism allows policies to access the Kubernetes cluster state. During data replication, OPA/Gatekeeper does not wait for the replication to finish before processing a request, which might cause inconsistencies between the replicated resources in OPA/Gatekeeper and the resources actually present in the cluster. Inconsistency can later be reflected in a policy bypass. NOTE: the vendor disagrees that this is a vulnerability, because Kubernetes states are only eventually consistent.",
  "id": "GHSA-v8hv-78vf-x9fr",
  "modified": "2022-07-13T00:01:49Z",
  "published": "2022-05-24T19:21:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43979"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hkerma/opa-gatekeeper-concurrency-issue"
    },
    {
      "type": "WEB",
      "url": "https://github.com/open-policy-agent/gatekeeper/releases"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-43979 (GCVE-0-2021-43979)

Vulnerability from cvelistv5 – Published: 2021-11-17 18:26 – Updated: 2024-08-04 04:10

Summary

Styra Open Policy Agent (OPA) Gatekeeper through 3.7.0 mishandles concurrency, sometimes resulting in incorrect access control. The data replication mechanism allows policies to access the Kubernetes cluster state. During data replication, OPA/Gatekeeper does not wait for the replication to finish before processing a request, which might cause inconsistencies between the replicated resources in OPA/Gatekeeper and the resources actually present in the cluster. Inconsistency can later be reflected in a policy bypass. NOTE: the vendor disagrees that this is a vulnerability, because Kubernetes states are only eventually consistent

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://github.com/hkerma/opa-gatekeeper-concurre…	x_refsource_MISC
	https://github.com/open-policy-agent/gatekeeper/r…	x_refsource_MISC

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              "x_transferred"
            ],
            "url": "https://github.com/hkerma/opa-gatekeeper-concurrency-issue"
          },
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            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/open-policy-agent/gatekeeper/releases"
          }
        ],
        "title": "CVE Program Container"
      }
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        "shortName": "mitre"
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          ],
          "url": "https://github.com/open-policy-agent/gatekeeper/releases"
        }
      ],
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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-V8HV-78VF-X9FR

CVE-2021-43979 (GCVE-0-2021-43979)

Tags

Sightings

Nomenclature