GSD-2020-14966

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and '0' characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a security-relevant impact if an application relied on a single canonical signature.
Aliases
Aliases
CVE-2020-14966
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{
  "GSD": {
    "alias": "CVE-2020-14966",
    "description": "An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and \u00270\u0027 characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a security-relevant impact if an application relied on a single canonical signature.",
    "id": "GSD-2020-14966"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
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      "details": "An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and \u00270\u0027 characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a security-relevant impact if an application relied on a single canonical signature.",
      "id": "GSD-2020-14966",
      "modified": "2023-12-13T01:22:00.335038Z",
      "schema_version": "1.4.0"
    }
  },
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      "advisories": [
        {
          "affected_range": "\u003c=8.0.18",
          "affected_versions": "All versions up to 8.0.18",
          "cvss_v2": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "cwe_ids": [
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            "CWE-347",
            "CWE-937"
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          "date": "2020-07-24",
          "description": "An issue was discovered in the jsrsasign package for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and `0` characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a security-relevant impact if an application relied on a single canonical signature.",
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          "identifier": "CVE-2020-14966",
          "identifiers": [
            "CVE-2020-14966"
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          "not_impacted": "All versions after 8.0.18",
          "package_slug": "npm/jsrsasign",
          "pubdate": "2020-06-22",
          "solution": "Upgrade to version 8.0.19 or above.",
          "title": "Improper Verification of Cryptographic Signature",
          "urls": [
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      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-01-28T00:57Z",
      "publishedDate": "2020-06-22T12:15Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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