github - ghsa-w2rr-38wv-8rrp

GHSA-W2RR-38WV-8RRP

Vulnerability from github – Published: 2025-03-20 18:49 – Updated: 2025-03-20 18:49

Summary

kcp allows unauthorized creation and deletion of objects in arbitrary workspaces through APIExport Virtual Workspace

Details

Impact

The APIExport Virtual Workspace can be used to manage objects in workspaces that bind that APIExport for resources defined in the APIExport or specified and accepted via permission claims. This allows an API provider (via their APIExport) scoped down access to workspaces of API consumers to provide their services properly.

The identified vulnerability allows creating or deleting an object via the APIExport VirtualWorkspace in any arbitrary target workspace for pre-existing resources. By design, this should only be allowed when the workspace owner decides to give access to an API provider by creating an APIBinding.

With this vulnerability, it is possible for an attacker to create and delete objects even if none of these requirements are satisfied, i.e. even if there is no APIBinding in that workspace at all or the workspace owner has created an APIBinding, but rejected a permission claim.

Patches

A fix for this issue has been identified and has been published with kcp 0.26.3 and 0.27.0.

Workarounds

For users unable to upgrade to one of the patched versions, the following guidance can be given:

Minimise the set of people with apiexport/content sub-resource access to APIExport resources. Be aware that this has to apply to all workspaces to be effective.
Filter incoming requests in a reverse proxy with a similar logic as the authorizer added in the referenced pull request.

References

See pull request (https://github.com/kcp-dev/kcp/pull/3338).

Severity ?

9.6 (Critical)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/kcp-dev/kcp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.26.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-29922"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-285"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-20T18:49:06Z",
    "nvd_published_at": "2025-03-20T18:15:19Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\n\nThe `APIExport` Virtual Workspace can be used to manage objects in workspaces that bind that `APIExport` for resources defined in the `APIExport` or specified and accepted via permission claims. This allows an API provider (via their `APIExport`) scoped down access to workspaces of API consumers to provide their services properly.\n\nThe identified vulnerability allows creating or deleting an object via the `APIExport` VirtualWorkspace in any arbitrary target workspace for pre-existing resources. By design, this should only be allowed when the workspace owner decides to give access to an API provider by creating an APIBinding.\n\nWith this vulnerability, it is possible for an attacker to create and delete objects even if none of these requirements are satisfied, i.e. even if there is no APIBinding in that workspace at all or the workspace owner has created an APIBinding, but rejected a permission claim.\n\n### Patches\n\nA fix for this issue has been identified and has been published with kcp 0.26.3 and 0.27.0.\n\n### Workarounds\n\nFor users unable to upgrade to one of the patched versions, the following guidance can be given:\n\n- Minimise the set of people with `apiexport/content` sub-resource access to `APIExport` resources. Be aware that this has to apply to all workspaces to be effective.\n- Filter incoming requests in a reverse proxy with a similar logic as the authorizer added in the referenced pull request.\n\n### References\n\nSee pull request (https://github.com/kcp-dev/kcp/pull/3338).",
  "id": "GHSA-w2rr-38wv-8rrp",
  "modified": "2025-03-20T18:49:06Z",
  "published": "2025-03-20T18:49:06Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/kcp-dev/kcp/security/advisories/GHSA-w2rr-38wv-8rrp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-29922"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kcp-dev/kcp/pull/3338"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kcp-dev/kcp/commit/614ecbf35f11db00f65391ab6fbb1547ca8b5d38"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/kcp-dev/kcp"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kcp allows unauthorized creation and deletion of objects in arbitrary workspaces through APIExport Virtual Workspace"
}

CVE-2025-29922 (GCVE-0-2025-29922)

Vulnerability from cvelistv5 – Published: 2025-03-20 17:49 – Updated: 2025-03-20 18:16

Summary

kcp is a Kubernetes-like control plane for form-factors and use-cases beyond Kubernetes and container workloads. Prior to 0.26.3, the identified vulnerability allows creating or deleting an object via the APIExport VirtualWorkspace in any arbitrary target workspace for pre-existing resources. By design, this should only be allowed when the workspace owner decides to give access to an API provider by creating an APIBinding. With this vulnerability, it is possible for an attacker to create and delete objects even if none of these requirements are satisfied, i.e. even if there is no APIBinding in that workspace at all or the workspace owner has created an APIBinding, but rejected a permission claim. A fix for this issue has been identified and has been published with kcp 0.26.3 and 0.27.0.

Severity ?

9.6 (Critical)


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

CWE

CWE-285 - Improper Authorization

Assigner

GitHub_M

References

URL

Tags

	https://github.com/kcp-dev/kcp/security/advisorie…	x_refsource_CONFIRM
	https://github.com/kcp-dev/kcp/pull/3338	x_refsource_MISC
	https://github.com/kcp-dev/kcp/commit/614ecbf35f1…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	kcp-dev	kcp	Affected: < 0.26.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-29922",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-20T18:15:51.138004Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-20T18:16:20.624Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kcp",
          "vendor": "kcp-dev",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.26.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "kcp is a Kubernetes-like control plane for form-factors and use-cases beyond Kubernetes and container workloads. Prior to 0.26.3, the identified vulnerability allows creating or deleting an object via the APIExport VirtualWorkspace in any arbitrary target workspace for pre-existing resources. By design, this should only be allowed when the workspace owner decides to give access to an API provider by creating an APIBinding. With this vulnerability, it is possible for an attacker to create and delete objects even if none of these requirements are satisfied, i.e. even if there is no APIBinding in that workspace at all or the workspace owner has created an APIBinding, but rejected a permission claim. A fix for this issue has been identified and has been published with kcp 0.26.3 and 0.27.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-285",
              "description": "CWE-285: Improper Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-03-20T17:49:57.425Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/kcp-dev/kcp/security/advisories/GHSA-w2rr-38wv-8rrp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/kcp-dev/kcp/security/advisories/GHSA-w2rr-38wv-8rrp"
        },
        {
          "name": "https://github.com/kcp-dev/kcp/pull/3338",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kcp-dev/kcp/pull/3338"
        },
        {
          "name": "https://github.com/kcp-dev/kcp/commit/614ecbf35f11db00f65391ab6fbb1547ca8b5d38",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kcp-dev/kcp/commit/614ecbf35f11db00f65391ab6fbb1547ca8b5d38"
        }
      ],
      "source": {
        "advisory": "GHSA-w2rr-38wv-8rrp",
        "discovery": "UNKNOWN"
      },
      "title": "kcp allows unauthorized creation and deletion of objects in arbitrary workspaces through APIExport Virtual Workspace"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-29922",
    "datePublished": "2025-03-20T17:49:57.425Z",
    "dateReserved": "2025-03-12T13:42:22.135Z",
    "dateUpdated": "2025-03-20T18:16:20.624Z",
    "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-W2RR-38WV-8RRP

Impact

Patches

Workarounds

References

CVE-2025-29922 (GCVE-0-2025-29922)

Tags

Sightings

Nomenclature