github - ghsa-vjxv-45g9-9296

ghsa-vjxv-45g9-9296

Vulnerability from github

Published

2022-08-10 18:40

Modified

2022-08-10 18:40

Severity ?

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

Summary

cosign's `cosign verify-attestaton --type` can report a false positive if any attestation exists

Details

cosign verify-attestation used with the --type flag will report a false positive verification when:

There is at least one attestation with a valid signature
There are NO attestations of the type being verified (--type defaults to "custom")

This can happen when signing with a standard keypair and with "keyless" signing with Fulcio. Users should upgrade to cosign version 1.10.1 or greater for a patch. Currently the only workaround is to upgrade.

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/sigstore/cosign"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.10.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-35929"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-08-10T18:40:38Z",
    "nvd_published_at": "2022-08-04T19:15:00Z",
    "severity": "HIGH"
  },
  "details": "`cosign verify-attestation` used with the `--type` flag will report a false positive verification when:\n\n- There is at least one attestation with a valid signature\n- There are NO attestations of the type being verified (--type defaults to \"custom\")\n\nThis can happen when signing with a standard keypair and with \"keyless\" signing with Fulcio. Users should upgrade to cosign version 1.10.1 or greater for a patch. Currently the only workaround is to upgrade.",
  "id": "GHSA-vjxv-45g9-9296",
  "modified": "2022-08-10T18:40:38Z",
  "published": "2022-08-10T18:40:38Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35929"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sigstore/cosign"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "cosign\u0027s `cosign verify-attestaton  --type` can report a false positive if any attestation exists"
}

cve-2022-35929

Vulnerability from cvelistv5

Published

2022-08-04 18:45

Modified

2024-08-03 09:51

Severity ?

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

Summary

False positive signature verification in cosign

References

▼	URL	Tags
	https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296	x_refsource_CONFIRM
	https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94	x_refsource_MISC

Impacted products

Vendor

Product

Version

▼

sigstore

cosign

Version: < 1.10.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T09:51:59.114Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "cosign",
          "vendor": "sigstore",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.10.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
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          "value": "cosign is a container signing and verification utility. In versions prior to 1.10.1 cosign can report a false positive if any attestation exists. `cosign verify-attestation` used with the `--type` flag will report a false positive verification when there is at least one attestation with a valid signature and there are NO attestations of the type being verified (--type defaults to \"custom\"). This can happen when signing with a standard keypair and with \"keyless\" signing with Fulcio. This vulnerability can be reproduced with the `distroless.dev/static@sha256:dd7614b5a12bc4d617b223c588b4e0c833402b8f4991fb5702ea83afad1986e2` image. This image has a `vuln` attestation but not an `spdx` attestation. However, if you run `cosign verify-attestation --type=spdx` on this image, it incorrectly succeeds. This issue has been addressed in version 1.10.1 of cosign. Users are advised to upgrade. There are no known workarounds for this issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
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      ],
      "problemTypes": [
        {
          "descriptions": [
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              "description": "CWE-347: Improper Verification of Cryptographic Signature",
              "lang": "en",
              "type": "CWE"
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          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2022-08-04T18:45:14",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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      },
      "references": [
        {
          "tags": [
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          ],
          "url": "https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94"
        }
      ],
      "source": {
        "advisory": "GHSA-vjxv-45g9-9296",
        "discovery": "UNKNOWN"
      },
      "title": "False positive signature verification in cosign",
      "x_legacyV4Record": {
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          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2022-35929",
          "STATE": "PUBLIC",
          "TITLE": "False positive signature verification in cosign"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "cosign",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 1.10.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "sigstore"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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              "value": "cosign is a container signing and verification utility. In versions prior to 1.10.1 cosign can report a false positive if any attestation exists. `cosign verify-attestation` used with the `--type` flag will report a false positive verification when there is at least one attestation with a valid signature and there are NO attestations of the type being verified (--type defaults to \"custom\"). This can happen when signing with a standard keypair and with \"keyless\" signing with Fulcio. This vulnerability can be reproduced with the `distroless.dev/static@sha256:dd7614b5a12bc4d617b223c588b4e0c833402b8f4991fb5702ea83afad1986e2` image. This image has a `vuln` attestation but not an `spdx` attestation. However, if you run `cosign verify-attestation --type=spdx` on this image, it incorrectly succeeds. This issue has been addressed in version 1.10.1 of cosign. Users are advised to upgrade. There are no known workarounds for this issue."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
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              ]
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          ]
        },
        "references": {
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            {
              "name": "https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296",
              "refsource": "CONFIRM",
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            },
            {
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            }
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  "cveMetadata": {
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    "datePublished": "2022-08-04T18:45:14",
    "dateReserved": "2022-07-15T00:00:00",
    "dateUpdated": "2024-08-03T09:51:59.114Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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