Vulnerability-Lookup

GHSA-X45C-CVP8-Q4FM

Vulnerability from github – Published: 2022-12-05 23:08 – Updated: 2022-12-06 16:20

Summary

Capsule vulnerable to privilege escalation by ServiceAccount deployed in a Tenant Namespace

Details

Capsule implements a multi-tenant and policy-based environment in a Kubernetes cluster. A ServiceAccount deployed in a Tenant Namespace, when granted with PATCH capabilities on its own Namespace, is able to edit it and remove the Owner Reference, breaking the reconciliation of the Capsule Operator and removing all the enforcement like Pod Security annotations, Network Policies, Limit Range and Resource Quota items.

With that said, an attacker could detach the Namespace from a Tenant that is forbidding starting privileged Pods using the Pod Security labels by removing the OwnerReference, removing the enforcement labels, and being able to start privileged containers that would be able to start a generic Kubernetes privilege escalation.

Patches

Patches have been released for version 0.1.3 and all users must upgrade to this release.

Workarounds

N.A.

References

N.A.

For more information

If you have any questions or comments about this advisory: * Open an issue in github.com/clastix/capsule * Reach out on #capsule channel available on Kubernetes Slack workspace

Severity ?

8.8 (High)


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

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JSON

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.1.2"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/clastix/capsule"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-46167"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-12-05T23:08:37Z",
    "nvd_published_at": "2022-12-02T19:15:00Z",
    "severity": "HIGH"
  },
  "details": "Capsule implements a multi-tenant and policy-based environment in a Kubernetes cluster. A ServiceAccount deployed in a Tenant Namespace, when granted with `PATCH` capabilities on its own Namespace, is able to edit it and remove the Owner Reference, breaking the reconciliation of the Capsule Operator and removing all the enforcement like Pod Security annotations, Network Policies, Limit Range and Resource Quota items.\n\nWith that said, an attacker could detach the Namespace from a Tenant that is forbidding starting privileged Pods using the Pod Security labels by removing the OwnerReference, removing the enforcement labels, and being able to start privileged containers that would be able to start a generic Kubernetes privilege escalation.\n\n### Patches\n\nPatches have been released for version 0.1.3 and all users must upgrade to this release.\n\n### Workarounds\n\nN.A.\n\n### References\n\nN.A.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [github.com/clastix/capsule](https://github.com/clastix/capsule)\n* Reach out on [#capsule](https://kubernetes.slack.com/archives/C03GETTJQRL) channel available on Kubernetes Slack workspace\n",
  "id": "GHSA-x45c-cvp8-q4fm",
  "modified": "2022-12-06T16:20:39Z",
  "published": "2022-12-05T23:08:37Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/clastix/capsule/security/advisories/GHSA-x45c-cvp8-q4fm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-46167"
    },
    {
      "type": "WEB",
      "url": "https://github.com/clastix/capsule/commit/1df430e71be8c4778c82eca3459978ad7d0b4b7b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/clastix/capsule/commit/75525ac19254b0c5111e34d7985e2be7bc8b1ac1"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/clastix/capsule"
    },
    {
      "type": "WEB",
      "url": "https://github.com/clastix/capsule/releases/tag/v0.1.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Capsule vulnerable to privilege escalation by ServiceAccount deployed in a Tenant Namespace"
}

CVE-2022-46167 (GCVE-0-2022-46167)

Vulnerability from cvelistv5 – Published: 2022-12-02 18:22 – Updated: 2025-04-23 16:32

Title

Capsule vulnerable to privilege escalation by ServiceAccount deployed in a Tenant Namespace

Summary

Capsule is a multi-tenancy and policy-based framework for Kubernetes. Prior to version 0.1.3, a ServiceAccount deployed in a Tenant Namespace, when granted with `PATCH` capabilities on its own Namespace, is able to edit it and remove the Owner Reference, breaking the reconciliation of the Capsule Operator and removing all the enforcement like Pod Security annotations, Network Policies, Limit Range and Resource Quota items. An attacker could detach the Namespace from a Tenant that is forbidding starting privileged Pods using the Pod Security labels by removing the OwnerReference, removing the enforcement labels, and being able to start privileged containers that would be able to start a generic Kubernetes privilege escalation. Patches have been released for version 0.1.3. No known workarounds are available.

Severity ?

8.8 (High)


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

CWE

CWE-863 - Incorrect Authorization

Assigner

GitHub_M

References

URL

Tags

	https://github.com/clastix/capsule/security/advis…	x_refsource_CONFIRM
	https://github.com/clastix/capsule/commit/1df430e…	x_refsource_MISC
	https://github.com/clastix/capsule/commit/75525ac…	x_refsource_MISC
	https://github.com/clastix/capsule/releases/tag/v0.1.3	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	clastix	capsule	Affected: < 0.1.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T14:24:03.369Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/clastix/capsule/security/advisories/GHSA-x45c-cvp8-q4fm",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/clastix/capsule/security/advisories/GHSA-x45c-cvp8-q4fm"
          },
          {
            "name": "https://github.com/clastix/capsule/commit/1df430e71be8c4778c82eca3459978ad7d0b4b7b",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/clastix/capsule/commit/1df430e71be8c4778c82eca3459978ad7d0b4b7b"
          },
          {
            "name": "https://github.com/clastix/capsule/commit/75525ac19254b0c5111e34d7985e2be7bc8b1ac1",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/clastix/capsule/commit/75525ac19254b0c5111e34d7985e2be7bc8b1ac1"
          },
          {
            "name": "https://github.com/clastix/capsule/releases/tag/v0.1.3",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/clastix/capsule/releases/tag/v0.1.3"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-46167",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T15:46:12.013257Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T16:32:56.226Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "capsule",
          "vendor": "clastix",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.1.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Capsule is a multi-tenancy and policy-based framework for Kubernetes. Prior to version 0.1.3, a ServiceAccount deployed in a Tenant Namespace, when granted with `PATCH` capabilities on its own Namespace, is able to edit it and remove the Owner Reference, breaking the reconciliation of the Capsule Operator and removing all the enforcement like Pod Security annotations, Network Policies, Limit Range and Resource Quota items. An attacker could detach the Namespace from a Tenant that is forbidding starting privileged Pods using the Pod Security labels by removing the OwnerReference, removing the enforcement labels, and being able to start privileged containers that would be able to start a generic Kubernetes privilege escalation. Patches have been released for version 0.1.3. No known workarounds are available.\n"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-02T18:22:21.817Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/clastix/capsule/security/advisories/GHSA-x45c-cvp8-q4fm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/clastix/capsule/security/advisories/GHSA-x45c-cvp8-q4fm"
        },
        {
          "name": "https://github.com/clastix/capsule/commit/1df430e71be8c4778c82eca3459978ad7d0b4b7b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/clastix/capsule/commit/1df430e71be8c4778c82eca3459978ad7d0b4b7b"
        },
        {
          "name": "https://github.com/clastix/capsule/commit/75525ac19254b0c5111e34d7985e2be7bc8b1ac1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/clastix/capsule/commit/75525ac19254b0c5111e34d7985e2be7bc8b1ac1"
        },
        {
          "name": "https://github.com/clastix/capsule/releases/tag/v0.1.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/clastix/capsule/releases/tag/v0.1.3"
        }
      ],
      "source": {
        "advisory": "GHSA-x45c-cvp8-q4fm",
        "discovery": "UNKNOWN"
      },
      "title": "Capsule vulnerable to privilege escalation by ServiceAccount deployed in a Tenant Namespace"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-46167",
    "datePublished": "2022-12-02T18:22:21.817Z",
    "dateReserved": "2022-11-28T17:27:19.998Z",
    "dateUpdated": "2025-04-23T16:32:56.226Z",
    "requesterUserId": "c184a3d9-dc98-4c48-a45b-d2d88cf0ac74",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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-X45C-CVP8-Q4FM

Patches

Workarounds

References

For more information

CVE-2022-46167 (GCVE-0-2022-46167)

Tags

Sightings

Nomenclature