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CVE-2023-40029

Status: ModifiedCritical (9.6)—

Argo CD is a declarative continuous deployment for Kubernetes. Argo CD Cluster secrets might be managed declaratively using Argo CD / kubectl apply. As a result, the full secret body is stored in`kubectl.kubernetes.io/last-applied-configuration` annotation. pull request #7139 introduced the ability to manage cluster labels and annotations. Since clusters are stored as secrets it also exposes the `kubectl.kubernetes.io/last-applied-configuration` annotation which includes full secret body.

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In order to view the cluster annotations via the Argo CD API, the user must have `clusters, get` RBAC access. **Note:** In many cases, cluster secrets do not contain any actually-secret information. But sometimes, as in bearer-token auth, the contents might be very sensitive. The bug has been patched in versions 2.8.3, 2.7.14, and 2.6.15. Users are advised to upgrade. Users unable to upgrade should update/deploy cluster secret with `server-side-apply` flag which does not use or rely on `kubectl.kubernetes.io/last-applied-configuration` annotation. Note: annotation for existing secrets will require manual removal.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Argoproj — Argo CD

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2023-40029",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "id": "CVE-2023-40029",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
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            {
              "automatable": "no"
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              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2024-09-26T18:21:03.707832Z"
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  "published": "2023-09-07T23:15:09.763",
  "references": [
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      "url": "https://github.com/argoproj/argo-cd/commit/4b2e5b06bff2ffd8ed1970654ddd8e55fc4a41c4",
      "tags": [
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    {
      "url": "https://github.com/argoproj/argo-cd/pull/7139",
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      "url": "https://github.com/argoproj/argo-cd/commit/4b2e5b06bff2ffd8ed1970654ddd8e55fc4a41c4",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "security-advisories@github.com",
      "description": [
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          "lang": "en",
          "value": "CWE-200"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Argo CD is a declarative continuous deployment for Kubernetes. Argo CD Cluster secrets might be managed declaratively using Argo CD / kubectl apply. As a result, the full secret body is stored in`kubectl.kubernetes.io/last-applied-configuration` annotation. pull request #7139 introduced the ability to manage cluster labels and annotations. Since clusters are stored as secrets it also exposes the `kubectl.kubernetes.io/last-applied-configuration` annotation which includes full secret body. In order to view the cluster annotations via the Argo CD API, the user must have `clusters, get` RBAC access. **Note:** In many cases, cluster secrets do not contain any actually-secret information. But sometimes, as in bearer-token auth, the contents might be very sensitive. The bug has been patched in versions 2.8.3, 2.7.14, and 2.6.15. Users are advised to upgrade. Users unable to upgrade should update/deploy cluster secret with `server-side-apply` flag which does not use or rely on `kubectl.kubernetes.io/last-applied-configuration` annotation. Note: annotation for existing secrets will require manual removal.\n\n"
    },
    {
      "lang": "es",
      "value": "Argo CD es una implementación continua declarativa para Kubernetes. Los secretos de Argo CD Cluster se pueden administrar de forma declarativa utilizando Argo CD / kubectl apply. Como resultado, el secret body completo se almacena en la anotación `kubectl.kubernetes.io/last-applied-configuration`. La solicitud de extracción #7139 introdujo la capacidad de administrar etiquetas y anotaciones del clúster. Dado que los clústeres se almacenan como secretos, también expone la anotación `kubectl.kubernetes.io/last-applied-configuration` que incluye el secret body completo. Para ver las anotaciones del clúster a través de la API de Argo CD, el usuario debe tener acceso RBAC \"clusters, get\". **Nota:** En muchos casos, los secretos del clúster no contienen ninguna información realmente secreta. Pero a veces, como en la autenticación de token de portador, el contenido puede ser muy sensible. El error se corrigió en las versiones 2.8.3, 2.7.14 y 2.6.15. Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar deben actualizar/implementar el secreto del clúster con el indicador `server-side-apply` que no utiliza ni depende de la anotación `kubectl.kubernetes.io/last-applied-configuration`. Nota: la anotación de secretos existentes requerirá eliminación manual."
    }
  ],
  "lastModified": "2026-06-17T06:15:50.033",
  "configurations": [
    {
      "nodes": [
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          "negate": false,
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}