github - ghsa-4cww-rww7-fw7q

GHSA-4CWW-RWW7-FW7Q

Vulnerability from github – Published: 2025-08-18 00:30 – Updated: 2025-11-05 00:31

Details

A security issue was discovered in the Kubernetes Image Builder where default credentials are enabled during the image build process. Additionally, virtual machine images built using the Nutanix or the OVA provider do not disable these default credentials, and nodes using the resulting images may be accessible via these default credentials. The credentials can be used to gain root access. Kubernetes clusters are only affected if their Windows nodes use VM images created via the Image Builder project with its Nutanix or OVA provider.

Severity ?

7.5 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-7342"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-798"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-17T23:15:26Z",
    "severity": "HIGH"
  },
  "details": "A security issue was discovered in the Kubernetes Image Builder where default credentials are enabled during the image build process. Additionally, virtual machine images built using the Nutanix or the OVA provider do not disable these default credentials, and nodes using the resulting images may be accessible via these default credentials. The credentials can be used to gain root access. Kubernetes clusters are only affected if their Windows nodes use VM images created via the Image Builder project with its Nutanix or OVA provider.",
  "id": "GHSA-4cww-rww7-fw7q",
  "modified": "2025-11-05T00:31:25Z",
  "published": "2025-08-18T00:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-7342"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kubernetes/kubernetes/issues/133115"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/kubernetes-security-announce/c/tuEsLUQu_PA"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/07/22/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-7342 (GCVE-0-2025-7342)

Vulnerability from cvelistv5 – Published: 2025-08-17 23:03 – Updated: 2025-11-04 21:14

Summary

A security issue was discovered in the Kubernetes Image Builder where default credentials are enabled during the Windows image build process when using the Nutanix or VMware OVA providers. These credentials, which allow root access, are disabled at the conclusion of the build. Kubernetes clusters are only affected if their nodes use VM images created via the Image Builder project and the vulnerability was exploited during the build process, which requires an attacker to access the build VM and modify the image while the build is in progress.

Severity ?

7.5 (High)


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

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

kubernetes

References

URL

Tags

	https://groups.google.com/g/kubernetes-security-a…	mailing-list
	https://github.com/kubernetes/kubernetes/issues/133115	issue-tracking

Impacted products

	Vendor	Product	Version
	Kubernetes	Image Builder	Affected: 0 , ≤ 0.1.44 (semver) Unaffected: 0.1.45

Credits

Abdel Adim Oisfi, Davide Silvetti, Nicolò Daprelà, Paolo Cavaglià, Pietro Tirenna from Shielder.

Show details on NVD website

JSON

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-7342",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-08-18T17:29:34.332110Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-08-18T17:31:13.564Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T21:14:52.844Z",
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        "references": [
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            "url": "http://www.openwall.com/lists/oss-security/2025/07/22/1"
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    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Image Builder",
          "vendor": "Kubernetes",
          "versions": [
            {
              "lessThanOrEqual": "0.1.44",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
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            }
          ]
        }
      ],
      "credits": [
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          "type": "reporter",
          "user": "00000000-0000-4000-9000-000000000000",
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      "impacts": [
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            {
              "lang": "en",
              "value": "CAPEC-395 Bypassing Electronic Locks and Access Controls"
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
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            "confidentialityImpact": "HIGH",
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            "scope": "UNCHANGED",
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      "problemTypes": [
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          "descriptions": [
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      "providerMetadata": {
        "dateUpdated": "2025-08-20T00:47:11.031Z",
        "orgId": "a6081bf6-c852-4425-ad4f-a67919267565",
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  },
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}

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-4CWW-RWW7-FW7Q

CVE-2025-7342 (GCVE-0-2025-7342)

Tags

Sightings

Nomenclature