github - ghsa-739f-hw6h-7wq8

GHSA-739F-HW6H-7WQ8

Vulnerability from github – Published: 2022-08-10 18:38 – Updated: 2022-08-10 18:38

Summary

PolicyController before 0.2.1 may bypass attestation verification

Details

PolicyController will report a false positive, resulting in an admission when it should not be admitted when: * There is at least one attestation with a valid signature * There are NO attestations of the type being verified (--type defaults to "custom")

Users should upgrade to cosign version 0.2.1 or greater for a patch. There are no known workarounds at this time.

Severity ?

7.1 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/sigstore/policy-controller"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-35930"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-08-10T18:38:16Z",
    "nvd_published_at": "2022-08-04T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "PolicyController will report a false positive, resulting in an admission when it should not be admitted when:\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\nUsers should upgrade to cosign version 0.2.1 or greater for a patch. There are no known workarounds at this time.",
  "id": "GHSA-739f-hw6h-7wq8",
  "modified": "2022-08-10T18:38:16Z",
  "published": "2022-08-10T18:38:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/sigstore/policy-controller/security/advisories/GHSA-739f-hw6h-7wq8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35930"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sigstore/policy-controller/commit/e852af36fb7d42678b21d7e97503c25bd1fd05c8"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sigstore/policy-controller"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sigstore/policy-controller/releases/tag/v0.2.1"
    }
  ],
  "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": "PolicyController before 0.2.1 may bypass attestation verification"
}

CVE-2022-35930 (GCVE-0-2022-35930)

Vulnerability from cvelistv5 – Published: 2022-08-04 21:15 – Updated: 2025-04-23 17:53

Summary

PolicyController is a utility used to enforce supply chain policy in Kubernetes clusters. In versions prior to 0.2.1 PolicyController will report a false positive, resulting in an admission when it should not be admitted 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"). An example image that can be used to test this is `ghcr.io/distroless/static@sha256:dd7614b5a12bc4d617b223c588b4e0c833402b8f4991fb5702ea83afad1986e2`. Users should upgrade to version 0.2.1 to resolve this issue. There are no workarounds for users unable to upgrade.

Severity ?

7.1 (High)


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

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

GitHub_M

References

URL

Tags

	https://github.com/sigstore/policy-controller/sec…	x_refsource_CONFIRM
	https://github.com/sigstore/policy-controller/com…	x_refsource_MISC
	https://github.com/sigstore/policy-controller/rel…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	sigstore	policy-controller	Affected: < 0.2.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T09:51:59.104Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/sigstore/policy-controller/security/advisories/GHSA-739f-hw6h-7wq8"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/sigstore/policy-controller/commit/e852af36fb7d42678b21d7e97503c25bd1fd05c8"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/sigstore/policy-controller/releases/tag/v0.2.1"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-35930",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T15:50:59.976233Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T17:53:16.444Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "policy-controller",
          "vendor": "sigstore",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.2.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "PolicyController is a utility used to enforce supply chain policy in Kubernetes clusters. In versions prior to 0.2.1 PolicyController will report a false positive, resulting in an admission when it should not be admitted 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\"). An example image that can be used to test this is `ghcr.io/distroless/static@sha256:dd7614b5a12bc4d617b223c588b4e0c833402b8f4991fb5702ea83afad1986e2`. Users should upgrade to version 0.2.1 to resolve this issue. There are no workarounds for users unable to upgrade."
        }
      ],
      "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-347",
              "description": "CWE-347: Improper Verification of Cryptographic Signature",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-08-04T21:15:15.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/sigstore/policy-controller/security/advisories/GHSA-739f-hw6h-7wq8"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sigstore/policy-controller/commit/e852af36fb7d42678b21d7e97503c25bd1fd05c8"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sigstore/policy-controller/releases/tag/v0.2.1"
        }
      ],
      "source": {
        "advisory": "GHSA-739f-hw6h-7wq8",
        "discovery": "UNKNOWN"
      },
      "title": "Ability to bypass attestation verification in sigstore PolicyController",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2022-35930",
          "STATE": "PUBLIC",
          "TITLE": "Ability to bypass attestation verification in sigstore PolicyController"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "policy-controller",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 0.2.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "sigstore"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "PolicyController is a utility used to enforce supply chain policy in Kubernetes clusters. In versions prior to 0.2.1 PolicyController will report a false positive, resulting in an admission when it should not be admitted 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\"). An example image that can be used to test this is `ghcr.io/distroless/static@sha256:dd7614b5a12bc4d617b223c588b4e0c833402b8f4991fb5702ea83afad1986e2`. Users should upgrade to version 0.2.1 to resolve this issue. There are no workarounds for users unable to upgrade."
            }
          ]
        },
        "impact": {
          "cvss": {
            "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"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-347: Improper Verification of Cryptographic Signature"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/sigstore/policy-controller/security/advisories/GHSA-739f-hw6h-7wq8",
              "refsource": "CONFIRM",
              "url": "https://github.com/sigstore/policy-controller/security/advisories/GHSA-739f-hw6h-7wq8"
            },
            {
              "name": "https://github.com/sigstore/policy-controller/commit/e852af36fb7d42678b21d7e97503c25bd1fd05c8",
              "refsource": "MISC",
              "url": "https://github.com/sigstore/policy-controller/commit/e852af36fb7d42678b21d7e97503c25bd1fd05c8"
            },
            {
              "name": "https://github.com/sigstore/policy-controller/releases/tag/v0.2.1",
              "refsource": "MISC",
              "url": "https://github.com/sigstore/policy-controller/releases/tag/v0.2.1"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-739f-hw6h-7wq8",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-35930",
    "datePublished": "2022-08-04T21:15:15.000Z",
    "dateReserved": "2022-07-15T00:00:00.000Z",
    "dateUpdated": "2025-04-23T17:53:16.444Z",
    "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-739F-HW6H-7WQ8

CVE-2022-35930 (GCVE-0-2022-35930)

Tags

Sightings

Nomenclature