FKIE_CVE-2022-24817

Vulnerability from fkie_nvd - Published: 2022-05-06 00:15 - Updated: 2024-11-21 06:51
Severity ?
9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
Flux2 is an open and extensible continuous delivery solution for Kubernetes. Flux2 versions between 0.1.0 and 0.29.0, helm-controller 0.1.0 to v0.19.0, and kustomize-controller 0.1.0 to v0.23.0 are vulnerable to Code Injection via malicious Kubeconfig. In multi-tenancy deployments this can also lead to privilege escalation if the controller's service account has elevated permissions. Workarounds include disabling functionality via Validating Admission webhooks by restricting users from setting the `spec.kubeConfig` field in Flux `Kustomization` and `HelmRelease` objects. Additional mitigations include applying restrictive AppArmor and SELinux profiles on the controller’s pod to limit what binaries can be executed. This vulnerability is fixed in kustomize-controller v0.23.0 and helm-controller v0.19.0, both included in flux2 v0.29.0
References
security-advisories@github.comhttps://github.com/fluxcd/flux2/security/advisories/GHSA-vvmq-fwmg-2gjcPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/fluxcd/flux2/security/advisories/GHSA-vvmq-fwmg-2gjcPatch, Third Party Advisory
Impacted products
Vendor Product Version
fluxcd flux2 *
fluxcd helm-controller *
fluxcd kustomize-controller *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:fluxcd:flux2:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3B093724-43C4-4D99-A3B7-D0BC5680B9AE",
              "versionEndExcluding": "0.29.0",
              "versionStartIncluding": "0.1.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:fluxcd:helm-controller:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C6A8DB05-A4C1-4E2A-93DA-610265FFC1BF",
              "versionEndExcluding": "0.19.0",
              "versionStartIncluding": "0.2.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:fluxcd:kustomize-controller:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E49D128E-5A7E-4B2D-85E6-B1643A7ACC04",
              "versionEndExcluding": "0.23.0",
              "versionStartIncluding": "0.1.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Flux2 is an open and extensible continuous delivery solution for Kubernetes. Flux2 versions between 0.1.0 and 0.29.0, helm-controller 0.1.0 to v0.19.0, and kustomize-controller 0.1.0 to v0.23.0 are vulnerable to Code Injection via malicious Kubeconfig. In multi-tenancy deployments this can also lead to privilege escalation if the controller\u0027s service account has elevated permissions. Workarounds include disabling functionality via Validating Admission webhooks by restricting users from setting the `spec.kubeConfig` field in Flux `Kustomization` and `HelmRelease` objects. Additional mitigations include applying restrictive AppArmor and SELinux profiles on the controller\u2019s pod to limit what binaries can be executed. This vulnerability is fixed in kustomize-controller v0.23.0 and helm-controller v0.19.0, both included in flux2 v0.29.0"
    },
    {
      "lang": "es",
      "value": "Flux2 es una soluci\u00f3n de entrega continua abierta y extensible para Kubernetes. Las versiones de Flux2 entre 0.1.0 y 0.29.0, helm-controller versiones 0.1.0 a v0.19.0, y kustomize-controller versiones 0.1.0 a v0.23.0 son vulnerables a la inyecci\u00f3n de c\u00f3digo por medio de un Kubeconfig malicioso. En los despliegues multi-tenancy esto tambi\u00e9n puede conllevar una escalada de privilegios si la cuenta de servicio del controlador presenta permisos elevados. Las mitigaciones incluyen deshabilitar la funcionalidad por medio de los webhooks de Comprobaci\u00f3n de Admisi\u00f3n restringiendo a los usuarios la configuraci\u00f3n del campo \"spec.kubeConfig\" en los objetos Flux \"Kustomization\" y \"HelmRelease\". Las mitigaciones adicionales incluyen la aplicaci\u00f3n de perfiles restrictivos de AppArmor y SELinux en el pod del controlador para limitar los binarios que pueden ejecutarse. Esta vulnerabilidad est\u00e1 corregida en kustomize-controller versi\u00f3n v0.23.0 y helm-controller versi\u00f3n v0.19.0, ambos incluidos en flux2 versi\u00f3n v0.29.0"
    }
  ],
  "id": "CVE-2022-24817",
  "lastModified": "2024-11-21T06:51:09.863",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.9,
          "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:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.9,
          "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:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2022-05-06T00:15:07.637",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/fluxcd/flux2/security/advisories/GHSA-vvmq-fwmg-2gjc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/fluxcd/flux2/security/advisories/GHSA-vvmq-fwmg-2gjc"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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