CVE-2020-20950 (GCVE-0-2020-20950)

Vulnerability from cvelistv5 – Published: 2021-01-19 12:22 – Updated: 2024-08-04 14:22
VLAI?
Summary
Bleichenbacher's attack on PKCS #1 v1.5 padding for RSA in Microchip Libraries for Applications 2018-11-26 All up to 2018-11-26. The vulnerability can allow one to use Bleichenbacher's oracle attack to decrypt an encrypted ciphertext by making successive queries to the server using the vulnerable library, resulting in remote information disclosure.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T14:22:25.499Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://microchip.com"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.microchip.com/mplab/microchip-libraries-for-applications"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Bleichenbacher\u0027s attack on PKCS #1 v1.5 padding for RSA in Microchip Libraries for Applications 2018-11-26 All up to 2018-11-26. The vulnerability can allow one to use Bleichenbacher\u0027s oracle attack to decrypt an encrypted ciphertext by making successive queries to the server using the vulnerable library, resulting in remote information disclosure."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-01-19T12:22:55",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://microchip.com"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.microchip.com/mplab/microchip-libraries-for-applications"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-20950",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Bleichenbacher\u0027s attack on PKCS #1 v1.5 padding for RSA in Microchip Libraries for Applications 2018-11-26 All up to 2018-11-26. The vulnerability can allow one to use Bleichenbacher\u0027s oracle attack to decrypt an encrypted ciphertext by making successive queries to the server using the vulnerable library, resulting in remote information disclosure."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf",
              "refsource": "MISC",
              "url": "http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf"
            },
            {
              "name": "http://microchip.com",
              "refsource": "MISC",
              "url": "http://microchip.com"
            },
            {
              "name": "https://www.microchip.com/mplab/microchip-libraries-for-applications",
              "refsource": "MISC",
              "url": "https://www.microchip.com/mplab/microchip-libraries-for-applications"
            },
            {
              "name": "https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb",
              "refsource": "MISC",
              "url": "https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-20950",
    "datePublished": "2021-01-19T12:22:55",
    "dateReserved": "2020-08-13T00:00:00",
    "dateUpdated": "2024-08-04T14:22:25.499Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:ietf:public_key_cryptography_standards_\\\\#1:1.5:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"0563022F-D818-46C3-AF66-E84984174DA8\"}]}]}, {\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:microchip:microchip_libraries_for_applications:*:*:*:*:*:*:*:*\", \"versionEndIncluding\": \"2018-11-26\", \"matchCriteriaId\": \"1D66BCB6-AC9B-4437-A0AB-645A353F2B4E\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"387021A0-AF36-463C-A605-32EA7DAC172E\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"703AF700-7A70-47E2-BC3A-7FD03B3CA9C1\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"A2572D17-1DE6-457B-99CC-64AFD54487EA\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Bleichenbacher\u0027s attack on PKCS #1 v1.5 padding for RSA in Microchip Libraries for Applications 2018-11-26 All up to 2018-11-26. The vulnerability can allow one to use Bleichenbacher\u0027s oracle attack to decrypt an encrypted ciphertext by making successive queries to the server using the vulnerable library, resulting in remote information disclosure.\"}, {\"lang\": \"es\", \"value\": \"Un ataque de Bleichenbacher en el relleno PKCS#1 versi\\u00f3n v1.5 para RSA en las Bibliotecas de Microchip para Aplicaciones en todas las versiones del 26-11-2018 hasta el 26-11-2018.\u0026#xa0;La vulnerabilidad puede permitir a uno usar el ataque de or\\u00e1culo de Bleichenbacher para descifrar un texto encriptado cifrado al hacer consultas sucesivas al servidor usando la biblioteca vulnerable, resultando en una divulgaci\\u00f3n de informaci\\u00f3n remota\"}]",
      "id": "CVE-2020-20950",
      "lastModified": "2024-11-21T05:12:20.087",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"baseScore\": 5.9, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 2.2, \"impactScore\": 3.6}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:N/C:P/I:N/A:N\", \"baseScore\": 4.3, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 8.6, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2021-01-19T13:15:11.887",
      "references": "[{\"url\": \"http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf\", \"source\": \"cve@mitre.org\", \"tags\": [\"Technical Description\", \"Third Party Advisory\"]}, {\"url\": \"http://microchip.com\", \"source\": \"cve@mitre.org\", \"tags\": [\"Product\"]}, {\"url\": \"https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb\", \"source\": \"cve@mitre.org\", \"tags\": [\"Technical Description\", \"Third Party Advisory\"]}, {\"url\": \"https://www.microchip.com/mplab/microchip-libraries-for-applications\", \"source\": \"cve@mitre.org\", \"tags\": [\"Product\"]}, {\"url\": \"http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Technical Description\", \"Third Party Advisory\"]}, {\"url\": \"http://microchip.com\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Product\"]}, {\"url\": \"https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Technical Description\", \"Third Party Advisory\"]}, {\"url\": \"https://www.microchip.com/mplab/microchip-libraries-for-applications\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Product\"]}]",
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-327\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-20950\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-01-19T13:15:11.887\",\"lastModified\":\"2024-11-21T05:12:20.087\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Bleichenbacher\u0027s attack on PKCS #1 v1.5 padding for RSA in Microchip Libraries for Applications 2018-11-26 All up to 2018-11-26. The vulnerability can allow one to use Bleichenbacher\u0027s oracle attack to decrypt an encrypted ciphertext by making successive queries to the server using the vulnerable library, resulting in remote information disclosure.\"},{\"lang\":\"es\",\"value\":\"Un ataque de Bleichenbacher en el relleno PKCS#1 versi\u00f3n v1.5 para RSA en las Bibliotecas de Microchip para Aplicaciones en todas las versiones del 26-11-2018 hasta el 26-11-2018.\u0026#xa0;La vulnerabilidad puede permitir a uno usar el ataque de or\u00e1culo de Bleichenbacher para descifrar un texto encriptado cifrado al hacer consultas sucesivas al servidor usando la biblioteca vulnerable, resultando en una divulgaci\u00f3n de informaci\u00f3n remota\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:N/A:N\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-327\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ietf:public_key_cryptography_standards_\\\\#1:1.5:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0563022F-D818-46C3-AF66-E84984174DA8\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:microchip:microchip_libraries_for_applications:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"2018-11-26\",\"matchCriteriaId\":\"1D66BCB6-AC9B-4437-A0AB-645A353F2B4E\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"387021A0-AF36-463C-A605-32EA7DAC172E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"703AF700-7A70-47E2-BC3A-7FD03B3CA9C1\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A2572D17-1DE6-457B-99CC-64AFD54487EA\"}]}]}],\"references\":[{\"url\":\"http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf\",\"source\":\"cve@mitre.org\",\"tags\":[\"Technical Description\",\"Third Party Advisory\"]},{\"url\":\"http://microchip.com\",\"source\":\"cve@mitre.org\",\"tags\":[\"Product\"]},{\"url\":\"https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb\",\"source\":\"cve@mitre.org\",\"tags\":[\"Technical Description\",\"Third Party Advisory\"]},{\"url\":\"https://www.microchip.com/mplab/microchip-libraries-for-applications\",\"source\":\"cve@mitre.org\",\"tags\":[\"Product\"]},{\"url\":\"http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Technical Description\",\"Third Party Advisory\"]},{\"url\":\"http://microchip.com\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Product\"]},{\"url\":\"https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Technical Description\",\"Third Party Advisory\"]},{\"url\":\"https://www.microchip.com/mplab/microchip-libraries-for-applications\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Product\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.