{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "msrcrypto"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.5.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-1026"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-682"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-25T19:19:10Z",
    "nvd_published_at": "2020-04-15T15:15:00Z",
    "severity": "HIGH"
  },
  "details": "A Security Feature Bypass vulnerability exists in the MSR JavaScript Cryptography Library that is caused by multiple bugs in the library\u0027s Elliptic Curve Cryptography (ECC) implementation.An attacker could potentially abuse these bugs to learn information about a server\u0027s private ECC key (a key leakage attack) or craft an invalid ECDSA signature that nevertheless passes as valid.The security update addresses the vulnerability by fixing the bugs disclosed in the ECC implementation, aka `MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability`.",
  "id": "GHSA-9x9j-836w-8f55",
  "modified": "2021-10-20T22:19:13Z",
  "published": "2022-01-06T19:44:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1026"
    },
    {
      "type": "WEB",
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1026"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Incorrect Calculation in the MSR JavaScript Cryptography Library"
}

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:research_javascript_cryptography_library:1.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "FCC764DA-F8E4-482C-824B-93FCFCD1C2F6",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A Security Feature Bypass vulnerability exists in the MSR JavaScript Cryptography Library that is caused by multiple bugs in the library\u00e2\u20ac\u2122s Elliptic Curve Cryptography (ECC) implementation.An attacker could potentially abuse these bugs to learn information about a server\u00e2\u20ac\u2122s private ECC key (a key leakage attack) or craft an invalid ECDSA signature that nevertheless passes as valid.The security update addresses the vulnerability by fixing the bugs disclosed in the ECC implementation, aka \u0027MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability\u0027."
    },
    {
      "lang": "es",
      "value": "Hay una vulnerabilidad de Omisi\u00f3n de la Caracter\u00edstica de Seguridad en la MSR JavaScript Cryptography Library que es causada por m\u00faltiples bugs en la implementaci\u00f3n de library\u00c3\u00a2\u00e2\u201a\u00ac\u00e2\u201e\u00a2s Elliptic Curve Cryptography (ECC). Un atacante podr\u00eda abusar de estos bugs para obtener informaci\u00f3n sobre la clave privada de un servidor (un ataque de filtrado de claves) o crear una firma ECDSA no v\u00e1lida que, no obstante, se considere v\u00e1lida. La actualizaci\u00f3n de la seguridad aborda la vulnerabilidad al corregir los bugs revelados en la implementaci\u00f3n de la ECC, tambi\u00e9n se conoce como \"MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability\"."
    }
  ],
  "id": "CVE-2020-1026",
  "lastModified": "2024-11-21T05:09:35.233",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
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    ]
  },
  "published": "2020-04-15T15:15:20.967",
  "references": [
    {
      "source": "secure@microsoft.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1026"
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      "tags": [
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        "Vendor Advisory"
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      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1026"
    }
  ],
  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        },
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Microsoft Dynamics NAV 2018",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "ChakraCore",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Dynamics 365 Business Central 2019 Release Wave 2 (On-Premise)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Research JavaScript Cryptography Library V1.4",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Visio 2010 Service Pack 2 (\u00e9ditions 64 bits)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Visio 2013 Service Pack 1 (\u00e9ditions 32 bits)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Dynamics NAV 2017",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Dynamics NAV 2015",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Business Productivity Servers 2010 Service Pack 2",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft System Center 2012 R2 Endpoint Protection",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Dynamics NAV 2013",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Dynamics 365 Server, version 9.0 (on-premises)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft System Center Endpoint Protection",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Visio 2016 (\u00e9dition 64 bits)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Visual Studio 2019 version 16.0",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Security Essentials",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft RMS Sharing pour Mac",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Visual Studio 2017 version 15.9 (includes 15.1 - 15.8)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Visio 2016 (\u00e9dition 32 bits)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Visual Studio 2015 Update 3",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Dynamics 365 BC On Premise",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Dynamics NAV 2016",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft AutoUpdate pour Mac",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Your Phone Companion App pour Android",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Visio 2010 Service Pack 2 (\u00e9ditions 32 bits)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Visio 2013 Service Pack 1 (\u00e9ditions 64 bits)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Remote Desktop pour Mac",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Forefront Endpoint Protection 2010",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Visual Studio 2019 version 16.5",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Dynamics 365 Business Central 2019 Spring Update",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft System Center 2012 Endpoint Protection",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2020-0899",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-0899"
    },
    {
      "name": "CVE-2020-0984",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-0984"
    },
    {
      "name": "CVE-2020-0931",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-0931"
    },
    {
      "name": "CVE-2020-0760",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-0760"
    },
    {
      "name": "CVE-2020-1026",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-1026"
    },
    {
      "name": "CVE-2020-1018",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-1018"
    },
    {
      "name": "CVE-2020-0969",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-0969"
    },
    {
      "name": "CVE-2020-1002",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-1002"
    },
    {
      "name": "CVE-2020-1019",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-1019"
    },
    {
      "name": "CVE-2020-1022",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-1022"
    },
    {
      "name": "CVE-2020-1049",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-1049"
    },
    {
      "name": "CVE-2020-1050",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-1050"
    },
    {
      "name": "CVE-2020-0919",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-0919"
    },
    {
      "name": "CVE-2020-0970",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-0970"
    },
    {
      "name": "CVE-2020-0900",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-0900"
    },
    {
      "name": "CVE-2020-0943",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-0943"
    }
  ],
  "initial_release_date": "2020-04-15T00:00:00",
  "last_revision_date": "2020-04-15T00:00:00",
  "links": [],
  "reference": "CERTFR-2020-AVI-225",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2020-04-15T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Usurpation d\u0027identit\u00e9"
    },
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "Contournement de la fonctionnalit\u00e9 de s\u00e9curit\u00e9"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 corrig\u00e9es dans \u003cspan\nclass=\"textit\"\u003eles produits Microsoft\u003c/span\u003e. Elles permettent \u00e0 un\nattaquant de provoquer une ex\u00e9cution de code \u00e0 distance, une \u00e9l\u00e9vation\nde privil\u00e8ges, une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es, un\ncontournement de la fonctionnalit\u00e9 de s\u00e9curit\u00e9 et une usurpation\nd\u0027identit\u00e9.\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Microsoft",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Microsoft du 14 avril 2020",
      "url": "https://portal.msrc.microsoft.com/fr-FR/security-guidance"
    }
  ]
}

{
  "GSD": {
    "alias": "CVE-2020-1026",
    "description": "A Security Feature Bypass vulnerability exists in the MSR JavaScript Cryptography Library that is caused by multiple bugs in the library\u00e2\u20ac\u2122s Elliptic Curve Cryptography (ECC) implementation.An attacker could potentially abuse these bugs to learn information about a server\u00e2\u20ac\u2122s private ECC key (a key leakage attack) or craft an invalid ECDSA signature that nevertheless passes as valid.The security update addresses the vulnerability by fixing the bugs disclosed in the ECC implementation, aka \u0027MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability\u0027.",
    "id": "GSD-2020-1026"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-1026"
      ],
      "details": "A Security Feature Bypass vulnerability exists in the MSR JavaScript Cryptography Library that is caused by multiple bugs in the library\u00e2\u20ac\u2122s Elliptic Curve Cryptography (ECC) implementation.An attacker could potentially abuse these bugs to learn information about a server\u00e2\u20ac\u2122s private ECC key (a key leakage attack) or craft an invalid ECDSA signature that nevertheless passes as valid.The security update addresses the vulnerability by fixing the bugs disclosed in the ECC implementation, aka \u0027MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability\u0027.",
      "id": "GSD-2020-1026",
      "modified": "2023-12-13T01:21:57.537603Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secure@microsoft.com",
        "ID": "CVE-2020-1026",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Microsoft Research JavaScript Cryptography Library V1.4",
                    "version": {
                      "version_data": [
                        {
                          "version_value": ""
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Microsoft"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "A Security Feature Bypass vulnerability exists in the MSR JavaScript Cryptography Library that is caused by multiple bugs in the library\u00e2\u20ac\u2122s Elliptic Curve Cryptography (ECC) implementation.An attacker could potentially abuse these bugs to learn information about a server\u00e2\u20ac\u2122s private ECC key (a key leakage attack) or craft an invalid ECDSA signature that nevertheless passes as valid.The security update addresses the vulnerability by fixing the bugs disclosed in the ECC implementation, aka \u0027MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability\u0027."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Security Feature Bypass"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1026",
            "refsource": "MISC",
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1026"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c1.5.8",
          "affected_versions": "All versions before 1.5.8",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-200",
            "CWE-347",
            "CWE-937"
          ],
          "date": "2022-01-06",
          "description": "A Security Feature Bypass vulnerability exists in the MSR JavaScript Cryptography Library that is caused by multiple bugs in the library\u00e2\u20ac\u2122s Elliptic Curve Cryptography (ECC) implementation.An attacker could potentially abuse these bugs to learn information about a server\u00e2\u20ac\u2122s private ECC key (a key leakage attack) or craft an invalid ECDSA signature that nevertheless passes as valid. The security update addresses the vulnerability by fixing the bugs disclosed in the ECC implementation, aka \u0027MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability\u0027.",
          "fixed_versions": [
            "1.5.8"
          ],
          "identifier": "CVE-2020-1026",
          "identifiers": [
            "GHSA-9x9j-836w-8f55",
            "CVE-2020-1026"
          ],
          "not_impacted": "All versions starting from 1.5.8",
          "package_slug": "npm/msrcrypto",
          "pubdate": "2022-01-06",
          "solution": "Upgrade to version 1.5.8 or above.",
          "title": "Improper Verification of Cryptographic Signature",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-1026",
            "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1026",
            "https://github.com/advisories/GHSA-9x9j-836w-8f55"
          ],
          "uuid": "24fa267d-05f0-4ee9-bd51-401f95eb6739"
        }
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      "publishedDate": "2020-04-15T15:15Z"
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}