cvelistv5 - cve-2025-23206

CVE-2025-23206 (GCVE-0-2025-23206)

Vulnerability from cvelistv5 – Published: 2025-01-17 20:34 – Updated: 2025-01-17 20:59

Summary

The AWS Cloud Development Kit (AWS CDK) is an open-source software development framework to define cloud infrastructure in code and provision it through AWS CloudFormation. Users who use IAM OIDC custom resource provider package will download CA Thumbprints as part of the custom resource workflow. However, the current `tls.connect` method will always set `rejectUnauthorized: false` which is a potential security concern. CDK should follow the best practice and set `rejectUnauthorized: true`. However, this could be a breaking change for existing CDK applications and we should fix this with a feature flag. Note that this is marked as low severity Security advisory because the issuer url is provided by CDK users who define the CDK application. If they insist on connecting to a unauthorized OIDC provider, CDK should not disallow this. Additionally, the code block is run in a Lambda environment which mitigate the MITM attack. The patch is in progress. To mitigate, upgrade to CDK v2.177.0 (Expected release date 2025-02-22). Once upgraded, users should make sure the feature flag '@aws-cdk/aws-iam:oidcRejectUnauthorizedConnections' is set to true in `cdk.context.json` or `cdk.json`. There are no known workarounds for this vulnerability.

Severity ?

1.8 (Low)


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

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

GitHub_M

References

URL

Tags

	https://github.com/aws/aws-cdk/security/advisorie…	x_refsource_CONFIRM
	https://github.com/aws/aws-cdk/issues/32920	x_refsource_MISC
	https://github.com/aws/aws-cdk/blob/d16482fc8a4a3…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	aws	aws-cdk	Affected: < 2.177.0

Show details on NVD website

JSON

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GHSA-V4MQ-X674-FF73

Vulnerability from github – Published: 2025-01-17 21:22 – Updated: 2025-01-29 18:22

Summary

AWS Cloud Development Kit (AWS CDK) IAM OIDC custom resource allows connection to unauthorized OIDC provider

Details

Impact

Users who use IAM OIDC custom resource provider package will download CA Thumbprints as part of the custom resource workflow, https://github.com/aws/aws-cdk/blob/d16482fc8a4a3e1f62751f481b770c09034df7d2/packages/%40aws-cdk/custom-resource-handlers/lib/aws-iam/oidc-handler/external.ts#L34.

However, the current tls.connect method will always set rejectUnauthorized: false which is a potential security concern. CDK should follow the best practice and set rejectUnauthorized: true. However, this could be a breaking change for existing CDK applications and we should fix this with a feature flag.

Note that this is marked as low severity Security advisory because the issuer url is provided by CDK users who define the CDK application. If they insist on connecting to a unauthorized OIDC provider, CDK should not disallow this. Additionally, the code block is run in a Lambda environment which mitigate the MITM attack.

As a best practice, CDK should still fix this issue under a feature flag to avoid regression.

packages/@aws-cdk/custom-resource-handlers/lib/aws-iam/oidc-handler/external.ts
❯❱ problem-based-packs.insecure-transport.js-node.bypass-tls-verification.bypass-tls-verification
Checks for setting the environment variable NODE_TLS_REJECT_UNAUTHORIZED to 0, which disables TLS
verification. This should only be used for debugging purposes. Setting the option rejectUnauthorized
to false bypasses verification against the list of trusted CAs, which also leads to insecure
transport.

Patches

The patch is in progress. To mitigate, upgrade to CDK v2.177.0 (Expected release date 2025-02-22). Once upgraded, please make sure the feature flag '@aws-cdk/aws-iam:oidcRejectUnauthorizedConnections' is set to true in cdk.context.json or cdk.json. More details on feature flag setting is here.

Workarounds

N/A

References

https://github.com/aws/aws-cdk/issues/32920

Severity ?

1.8 (Low)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "aws-cdk-lib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.177.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-23206"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-01-17T21:22:25Z",
    "nvd_published_at": "2025-01-17T21:15:12Z",
    "severity": "LOW"
  },
  "details": "### Impact\nUsers who use IAM OIDC custom resource provider package will download CA Thumbprints as part of the custom resource workflow, https://github.com/aws/aws-cdk/blob/d16482fc8a4a3e1f62751f481b770c09034df7d2/packages/%40aws-cdk/custom-resource-handlers/lib/aws-iam/oidc-handler/external.ts#L34. \n\nHowever, the current `tls.connect` method will always set `rejectUnauthorized: false` which is a potential security concern. CDK should follow the best practice and set `rejectUnauthorized: true`. However, this could be a breaking change for existing CDK applications and we should fix this with a feature flag. \n\nNote that this is marked as low severity Security advisory because the issuer url is provided by CDK users who define the CDK application. If they insist on connecting to a unauthorized OIDC provider, CDK should not disallow this. Additionally, the code block is run in a Lambda environment which mitigate the MITM attack.\n\nAs a best practice, CDK should still fix this issue under a feature flag to avoid regression.\n\n```\npackages/@aws-cdk/custom-resource-handlers/lib/aws-iam/oidc-handler/external.ts\n\u276f\u2771 problem-based-packs.insecure-transport.js-node.bypass-tls-verification.bypass-tls-verification\nChecks for setting the environment variable NODE_TLS_REJECT_UNAUTHORIZED to 0, which disables TLS\nverification. This should only be used for debugging purposes. Setting the option rejectUnauthorized\nto false bypasses verification against the list of trusted CAs, which also leads to insecure\ntransport.\n```\n\n### Patches\nThe patch is in progress. To mitigate, upgrade to CDK v2.177.0 (Expected release date 2025-02-22). \nOnce upgraded, please make sure the feature flag \u0027@aws-cdk/aws-iam:oidcRejectUnauthorizedConnections\u0027 is set to true in `cdk.context.json` or `cdk.json`. More details on feature flag setting is [here](https://docs.aws.amazon.com/cdk/v2/guide/featureflags.html).\n\n### Workarounds\nN/A\n\n### References\nhttps://github.com/aws/aws-cdk/issues/32920\n",
  "id": "GHSA-v4mq-x674-ff73",
  "modified": "2025-01-29T18:22:28Z",
  "published": "2025-01-17T21:22:25Z",
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      "type": "WEB",
      "url": "https://github.com/aws/aws-cdk/security/advisories/GHSA-v4mq-x674-ff73"
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    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "AWS Cloud Development Kit (AWS CDK) IAM OIDC custom resource allows connection to unauthorized OIDC provider"
}

FKIE_CVE-2025-23206

Vulnerability from fkie_nvd - Published: 2025-01-17 21:15 - Updated: 2025-09-19 18:45

Severity ?

8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/aws/aws-cdk/blob/d16482fc8a4a3e1f62751f481b770c09034df7d2/packages/%40aws-cdk/custom-resource-handlers/lib/aws-iam/oidc-handler/external.ts#L34	Product
security-advisories@github.com	https://github.com/aws/aws-cdk/issues/32920	Issue Tracking
security-advisories@github.com	https://github.com/aws/aws-cdk/security/advisories/GHSA-v4mq-x674-ff73	Vendor Advisory

Impacted products

	Vendor	Product	Version
	amazon	aws_cloud_development_kit	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:amazon:aws_cloud_development_kit:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "46E0B59C-173F-491C-B618-24602A2885AD",
              "versionEndExcluding": "2.177.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The AWS Cloud Development Kit (AWS CDK) is an open-source software development framework to define cloud infrastructure in code and provision it through AWS CloudFormation. Users who use IAM OIDC custom resource provider package will download CA Thumbprints as part of the custom resource workflow. However, the current `tls.connect` method will always set `rejectUnauthorized: false` which is a potential security concern. CDK should follow the best practice and set `rejectUnauthorized: true`. However, this could be a breaking change for existing CDK applications and we should fix this with a feature flag. Note that this is marked as low severity Security advisory because the issuer url is provided by CDK users who define the CDK application. If they insist on connecting to a unauthorized OIDC provider, CDK should not disallow this. Additionally, the code block is run in a Lambda environment which mitigate the MITM attack. The patch is in progress. To mitigate, upgrade to CDK v2.177.0 (Expected release date 2025-02-22). Once upgraded, users should make sure the feature flag \u0027@aws-cdk/aws-iam:oidcRejectUnauthorizedConnections\u0027 is set to true in `cdk.context.json` or `cdk.json`. There are no known workarounds for this vulnerability."
    },
    {
      "lang": "es",
      "value": "AWS Cloud Development Kit (AWS CDK) es un software de desarrollo de c\u00f3digo abierto framework para definir la infraestructura de la nube en c\u00f3digo y aprovisionarla a trav\u00e9s de AWS CloudFormation. Los usuarios que usan el paquete de proveedor de recursos personalizado de IAM OIDC descargar\u00e1n CA Thumbprints como parte del flujo de trabajo de recursos personalizado. Sin embargo, el m\u00e9todo `tls.connect` actual siempre establecer\u00e1 `rejectUnauthorized: false`, lo que es un posible problema de seguridad. CDK deber\u00eda seguir las mejores pr\u00e1cticas y establecer `rejectUnauthorized: true`. Sin embargo, esto podr\u00eda ser un cambio radical para las aplicaciones CDK existentes y deber\u00edamos solucionarlo con una marca de funci\u00f3n. Tenga en cuenta que esto est\u00e1 marcado como un aviso de seguridad de baja gravedad porque la URL del emisor la proporcionan los usuarios de CDK que definen la aplicaci\u00f3n CDK. Si insisten en conectarse a un proveedor de OIDC no autorizado, CDK no deber\u00eda prohibirlo. Adem\u00e1s, el bloque de c\u00f3digo se ejecuta en un entorno Lambda que mitiga el ataque MITM. El parche est\u00e1 en proceso. Para mitigar este problema, actualice a CDK v2.177.0 (fecha de lanzamiento prevista: 22/02/2025). Una vez actualizado, los usuarios deben asegurarse de que la marca de funci\u00f3n \u0027@aws-cdk/aws-iam:oidcRejectUnauthorizedConnections\u0027 est\u00e9 configurada como verdadera en `cdk.context.json` o `cdk.json`. No se conocen workarounds para esta vulnerabilidad."
    }
  ],
  "id": "CVE-2025-23206",
  "lastModified": "2025-09-19T18:45:13.100",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.1,
          "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:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 1.8,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "ACTIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-01-17T21:15:12.003",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product"
      ],
      "url": "https://github.com/aws/aws-cdk/blob/d16482fc8a4a3e1f62751f481b770c09034df7d2/packages/%40aws-cdk/custom-resource-handlers/lib/aws-iam/oidc-handler/external.ts#L34"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://github.com/aws/aws-cdk/issues/32920"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/aws/aws-cdk/security/advisories/GHSA-v4mq-x674-ff73"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

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

CVE-2025-23206 (GCVE-0-2025-23206)

GHSA-V4MQ-X674-FF73

Impact

Patches

Workarounds

References

FKIE_CVE-2025-23206

Tags

Sightings

Nomenclature