gsd-2023-47122
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
Gitsign is software for keyless Git signing using Sigstore. In versions of gitsign starting with 0.6.0 and prior to 0.8.0, Rekor public keys were fetched via the Rekor API, instead of through the local TUF client. If the upstream Rekor server happened to be compromised, gitsign clients could potentially be tricked into trusting incorrect signatures. There is no known compromise the default public good instance (`rekor.sigstore.dev`) - anyone using this instance is unaffected. This issue was fixed in v0.8.0. No known workarounds are available.
Aliases
Aliases
CVE-2023-47122


To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-47122",
    "id": "GSD-2023-47122"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-47122"
      ],
      "details": "Gitsign is software for keyless Git signing using Sigstore. In versions of gitsign starting with 0.6.0 and prior to 0.8.0, Rekor public keys were fetched via the Rekor API, instead of through the local TUF client. If the upstream Rekor server happened to be compromised, gitsign clients could potentially be tricked into trusting incorrect signatures. There is no known compromise the default public good instance (`rekor.sigstore.dev`) - anyone using this instance is unaffected. This issue was fixed in v0.8.0. No known workarounds are available.",
      "id": "GSD-2023-47122",
      "modified": "2023-12-13T01:20:51.507260Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2023-47122",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "gitsign",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 0.6.0, \u003c 0.8.0"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "sigstore"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Gitsign is software for keyless Git signing using Sigstore. In versions of gitsign starting with 0.6.0 and prior to 0.8.0, Rekor public keys were fetched via the Rekor API, instead of through the local TUF client. If the upstream Rekor server happened to be compromised, gitsign clients could potentially be tricked into trusting incorrect signatures. There is no known compromise the default public good instance (`rekor.sigstore.dev`) - anyone using this instance is unaffected. This issue was fixed in v0.8.0. No known workarounds are available."
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-347",
                "lang": "eng",
                "value": "CWE-347: Improper Verification of Cryptographic Signature"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/sigstore/gitsign/security/advisories/GHSA-xvrc-2wvh-49vc",
            "refsource": "MISC",
            "url": "https://github.com/sigstore/gitsign/security/advisories/GHSA-xvrc-2wvh-49vc"
          },
          {
            "name": "https://github.com/sigstore/gitsign/pull/399",
            "refsource": "MISC",
            "url": "https://github.com/sigstore/gitsign/pull/399"
          },
          {
            "name": "https://github.com/sigstore/gitsign/commit/cd66ccb03c86a3600955f0c15f6bfeb75f697236",
            "refsource": "MISC",
            "url": "https://github.com/sigstore/gitsign/commit/cd66ccb03c86a3600955f0c15f6bfeb75f697236"
          },
          {
            "name": "https://docs.sigstore.dev/about/threat-model/#sigstore-threat-model",
            "refsource": "MISC",
            "url": "https://docs.sigstore.dev/about/threat-model/#sigstore-threat-model"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-xvrc-2wvh-49vc",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:sigstore:gitsign:*:*:*:*:*:go:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.8.0",
                "versionStartIncluding": "0.6.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2023-47122"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Gitsign is software for keyless Git signing using Sigstore. In versions of gitsign starting with 0.6.0 and prior to 0.8.0, Rekor public keys were fetched via the Rekor API, instead of through the local TUF client. If the upstream Rekor server happened to be compromised, gitsign clients could potentially be tricked into trusting incorrect signatures. There is no known compromise the default public good instance (`rekor.sigstore.dev`) - anyone using this instance is unaffected. This issue was fixed in v0.8.0. No known workarounds are available."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": []
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/sigstore/gitsign/security/advisories/GHSA-xvrc-2wvh-49vc",
              "refsource": "",
              "tags": [
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://github.com/sigstore/gitsign/security/advisories/GHSA-xvrc-2wvh-49vc"
            },
            {
              "name": "https://github.com/sigstore/gitsign/pull/399",
              "refsource": "",
              "tags": [
                "Patch"
              ],
              "url": "https://github.com/sigstore/gitsign/pull/399"
            },
            {
              "name": "https://github.com/sigstore/gitsign/commit/cd66ccb03c86a3600955f0c15f6bfeb75f697236",
              "refsource": "",
              "tags": [
                "Patch"
              ],
              "url": "https://github.com/sigstore/gitsign/commit/cd66ccb03c86a3600955f0c15f6bfeb75f697236"
            },
            {
              "name": "https://docs.sigstore.dev/about/threat-model/#sigstore-threat-model",
              "refsource": "",
              "tags": [
                "Product"
              ],
              "url": "https://docs.sigstore.dev/about/threat-model/#sigstore-threat-model"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 1.6,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-11-16T17:50Z",
      "publishedDate": "2023-11-10T22:15Z"
    }
  }
}


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