github - ghsa-qwgc-rr35-h4x9

GHSA-QWGC-RR35-H4X9

Vulnerability from github – Published: 2024-09-09 18:16 – Updated: 2024-09-18 18:44

Summary

External Secrets Operator vulnerable to privilege escalation

Details

The external-secrets has a deployment called default-external-secrets-cert-controller, which is bound with a same-name ClusterRole. This ClusterRole has "get/list" verbs of secrets resources(https://github.com/external-secrets/external-secrets/blob/main/deploy/charts/external-secrets/templates/cert-controller-rbac.yaml#L49). It also has path/update verb of validatingwebhookconfigurations resources(https://github.com/external-secrets/external-secrets/blob/main/deploy/charts/external-secrets/templates/cert-controller-rbac.yaml#L27). As a result, if a malicious user can access the worker node which has this deployment. he/she can: 1. For the "get/list secrets" permission, he/she can abuse the SA token of this deployment to retrieve or get ALL secrets in the whole cluster, including the cluster-admin secret if created. After that, he/she can abuse the cluster-admin secret to do whatever he/she likes to the whole cluster, resulting in a cluster-level privilege escalation.

For the patch/update verb of validatingwebhookconfigurations, the malicious user can abuse these permissions to get sensitive data or lanuch DoS attacks:

For the privilege escalation attack, by updating/patching a Webhook to make it listen to Secret update operations, the attacker can capture and log all data from requests attempting to update Secrets. More specifically, when a Secret is updated, this Webhook sends the request data to the logging-service, which can then log the content of the Secret. This way, an attacker could indirectly gain access to the full contents of the Secret.

For the DoS attack, by updating/patching a Webhook, and making it deny all Pod create and update requests, the attacker can prevent any new Pods from being created or existing Pods from being updated, resulting in a Denial of Service (DoS) attack.

PoC

Please see the "Details" section

Impact

Privilege escalation

Severity ?

8.3 (High)


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

8.3 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/external-secrets/external-secrets"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.10.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-45041"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269",
      "CWE-732"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-09-09T18:16:22Z",
    "nvd_published_at": "2024-09-09T15:15:11Z",
    "severity": "HIGH"
  },
  "details": "### Details\nThe external-secrets has a deployment called default-external-secrets-cert-controller, which is bound with a same-name ClusterRole. This ClusterRole has \"get/list\" verbs of secrets resources(https://github.com/external-secrets/external-secrets/blob/main/deploy/charts/external-secrets/templates/cert-controller-rbac.yaml#L49). It also has path/update verb of validatingwebhookconfigurations resources(https://github.com/external-secrets/external-secrets/blob/main/deploy/charts/external-secrets/templates/cert-controller-rbac.yaml#L27). As a result, if a malicious user can access the worker node which has this deployment. he/she can:\n1. For the \"get/list secrets\" permission, he/she can abuse the SA token of this deployment to retrieve or get ALL secrets in the whole cluster, including the cluster-admin secret if created. After that, he/she can abuse the cluster-admin secret to do whatever he/she likes to the whole cluster, resulting in a cluster-level privilege escalation.\n\n2. For the patch/update verb of validatingwebhookconfigurations, the malicious user can abuse these permissions to get sensitive data or lanuch DoS attacks:\n\nFor the privilege escalation attack, by updating/patching a Webhook to make it listen to Secret update operations, the attacker can capture and log all data from requests attempting to update Secrets. More specifically, when a Secret is updated, this Webhook sends the request data to the logging-service, which can then log the content of the Secret. This way, an attacker could indirectly gain access to the full contents of the Secret.\n\nFor the DoS attack, by updating/patching a Webhook, and making it deny all Pod create and update requests, the attacker can prevent any new Pods from being created or existing Pods from being updated, resulting in a Denial of Service (DoS) attack.\n\n### PoC\nPlease see the \"Details\" section\n\n### Impact\nPrivilege escalation",
  "id": "GHSA-qwgc-rr35-h4x9",
  "modified": "2024-09-18T18:44:47Z",
  "published": "2024-09-09T18:16:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/external-secrets/external-secrets/security/advisories/GHSA-qwgc-rr35-h4x9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45041"
    },
    {
      "type": "WEB",
      "url": "https://github.com/external-secrets/external-secrets/commit/0368b9806f660fa6bc52cbbf3c6ccdb27c58bb35"
    },
    {
      "type": "WEB",
      "url": "https://github.com/external-secrets/external-secrets/commit/428a452fd2ad45935312f2c2c0d40bc37ce6e67c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/external-secrets/external-secrets"
    },
    {
      "type": "WEB",
      "url": "https://github.com/external-secrets/external-secrets/blob/main/deploy/charts/external-secrets/templates/cert-controller-rbac.yaml#L27"
    },
    {
      "type": "WEB",
      "url": "https://github.com/external-secrets/external-secrets/blob/main/deploy/charts/external-secrets/templates/cert-controller-rbac.yaml#L49"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2024-3126"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "External Secrets Operator vulnerable to privilege escalation"
}

CVE-2024-45041 (GCVE-0-2024-45041)

Vulnerability from cvelistv5 – Published: 2024-09-09 14:54 – Updated: 2024-09-09 17:11

Summary

External Secrets Operator is a Kubernetes operator that integrates external secret management systems. The external-secrets has a deployment called default-external-secrets-cert-controller, which is bound with a same-name ClusterRole. This ClusterRole has "get/list" verbs of secrets resources. It also has path/update verb of validatingwebhookconfigurations resources. This can be used to abuse the SA token of the deployment to retrieve or get ALL secrets in the whole cluster, capture and log all data from requests attempting to update Secrets, or make a webhook deny all Pod create and update requests. This vulnerability is fixed in 0.10.2.

Severity ?

8.3 (High)


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

CWE

CWE-269 - Improper Privilege Management

Assigner

GitHub_M

References

URL

Tags

	https://github.com/external-secrets/external-secr…	x_refsource_CONFIRM
	https://github.com/external-secrets/external-secr…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	external-secrets	external-secrets	Affected: < 0.10.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:external-secrets:external-secrets:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "external-secrets",
            "vendor": "external-secrets",
            "versions": [
              {
                "lessThan": "0.10.2",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-45041",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-09T17:10:26.641270Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-09T17:11:22.575Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "external-secrets",
          "vendor": "external-secrets",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.10.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "External Secrets Operator is a Kubernetes operator that integrates external secret management systems. The external-secrets has a deployment called default-external-secrets-cert-controller, which is bound with a same-name ClusterRole. This ClusterRole has \"get/list\" verbs of secrets resources. It also has path/update verb of validatingwebhookconfigurations resources.  This can be used to abuse the SA token of the deployment to retrieve or get ALL secrets in the whole cluster, capture and log all data from requests attempting to update Secrets, or make a webhook deny all Pod create and update requests. This vulnerability is fixed in 0.10.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-09-09T14:54:31.066Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/external-secrets/external-secrets/security/advisories/GHSA-qwgc-rr35-h4x9",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/external-secrets/external-secrets/security/advisories/GHSA-qwgc-rr35-h4x9"
        },
        {
          "name": "https://github.com/external-secrets/external-secrets/commit/428a452fd2ad45935312f2c2c0d40bc37ce6e67c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/external-secrets/external-secrets/commit/428a452fd2ad45935312f2c2c0d40bc37ce6e67c"
        }
      ],
      "source": {
        "advisory": "GHSA-qwgc-rr35-h4x9",
        "discovery": "UNKNOWN"
      },
      "title": "External Secrets Operator vulnerable to privilege escalation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-45041",
    "datePublished": "2024-09-09T14:54:31.066Z",
    "dateReserved": "2024-08-21T17:53:51.330Z",
    "dateUpdated": "2024-09-09T17:11:22.575Z",
    "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-QWGC-RR35-H4X9

Details

PoC

Impact

CVE-2024-45041 (GCVE-0-2024-45041)

Tags

Sightings

Nomenclature