CVE-2021-43398 (GCVE-0-2021-43398)

Vulnerability from cvelistv5 – Published: 2021-11-04 20:06 – Updated: 2024-08-04 03:55
VLAI?
Summary
Crypto++ (aka Cryptopp) 8.6.0 and earlier contains a timing leakage in MakePublicKey(). There is a clear correlation between execution time and private key length, which may cause disclosure of the length information of the private key. This might allow attackers to conduct timing attacks. NOTE: this report is disputed by the vendor and multiple third parties. The execution-time differences are intentional. A user may make a choice of a longer key as a tradeoff between strength and performance. In making this choice, the amount of information leaked to an adversary is of infinitesimal value
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:55:28.758Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/weidai11/cryptopp/issues/1080"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://cryptopp.com"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Crypto++ (aka Cryptopp) 8.6.0 and earlier contains a timing leakage in MakePublicKey(). There is a clear correlation between execution time and private key length, which may cause disclosure of the length information of the private key. This might allow attackers to conduct timing attacks. NOTE: this report is disputed by the vendor and multiple third parties. The execution-time differences are intentional. A user may make a choice of a longer key as a tradeoff between strength and performance. In making this choice, the amount of information leaked to an adversary is of infinitesimal value"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-17T15:31:24",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/weidai11/cryptopp/issues/1080"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://cryptopp.com"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222"
        }
      ],
      "tags": [
        "disputed"
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-43398",
          "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": "** DISPUTED ** Crypto++ (aka Cryptopp) 8.6.0 and earlier contains a timing leakage in MakePublicKey(). There is a clear correlation between execution time and private key length, which may cause disclosure of the length information of the private key. This might allow attackers to conduct timing attacks. NOTE: this report is disputed by the vendor and multiple third parties. The execution-time differences are intentional. A user may make a choice of a longer key as a tradeoff between strength and performance. In making this choice, the amount of information leaked to an adversary is of infinitesimal value."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/weidai11/cryptopp/issues/1080",
              "refsource": "MISC",
              "url": "https://github.com/weidai11/cryptopp/issues/1080"
            },
            {
              "name": "https://cryptopp.com",
              "refsource": "MISC",
              "url": "https://cryptopp.com"
            },
            {
              "name": "https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222",
              "refsource": "MISC",
              "url": "https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-43398",
    "datePublished": "2021-11-04T20:06:38",
    "dateReserved": "2021-11-04T00:00:00",
    "dateUpdated": "2024-08-04T03:55:28.758Z",
    "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:cryptopp:crypto\\\\+\\\\+:*:*:*:*:*:*:*:*\", \"versionEndIncluding\": \"8.6.0\", \"matchCriteriaId\": \"38083732-7F2F-45F1-B773-8BD7A039F08B\"}]}]}]",
      "cveTags": "[{\"sourceIdentifier\": \"cve@mitre.org\", \"tags\": [\"disputed\"]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Crypto++ (aka Cryptopp) 8.6.0 and earlier contains a timing leakage in MakePublicKey(). There is a clear correlation between execution time and private key length, which may cause disclosure of the length information of the private key. This might allow attackers to conduct timing attacks. NOTE: this report is disputed by the vendor and multiple third parties. The execution-time differences are intentional. A user may make a choice of a longer key as a tradeoff between strength and performance. In making this choice, the amount of information leaked to an adversary is of infinitesimal value\"}, {\"lang\": \"es\", \"value\": \"** EN DISPUTA ** Crypto++ (tambi\\u00e9n se conoce como Cryptopp) versiones 8.6.0 y anteriores, contienen un filtrado de tiempo en la funci\\u00f3n MakePublicKey(). Se presenta una clara correlaci\\u00f3n entre el tiempo de ejecuci\\u00f3n y la longitud de la clave privada, que puede causar una divulgaci\\u00f3n de la informaci\\u00f3n de la longitud de la clave privada. Esto podr\\u00eda permitir a atacantes conducir ataques de tiempo. NOTA: este informe es discutido por el vendedor y por m\\u00faltiples terceros. Las diferencias de tiempo de ejecuci\\u00f3n son intencionadas. Un usuario puede elegir una clave m\\u00e1s larga como compensaci\\u00f3n entre la fuerza y el rendimiento. Al hacer esta elecci\\u00f3n, la cantidad de informaci\\u00f3n filtrada a un adversario es de valor infinitesimal\"}]",
      "id": "CVE-2021-43398",
      "lastModified": "2024-11-21T06:29:09.903",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:P/I:N/A:N\", \"baseScore\": 5.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 10.0, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2021-11-04T21:15:09.520",
      "references": "[{\"url\": \"https://cryptopp.com\", \"source\": \"cve@mitre.org\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://github.com/weidai11/cryptopp/issues/1080\", \"source\": \"cve@mitre.org\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222\", \"source\": \"cve@mitre.org\", \"tags\": [\"Exploit\", \"Issue Tracking\", \"Third Party Advisory\"]}, {\"url\": \"https://cryptopp.com\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://github.com/weidai11/cryptopp/issues/1080\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Issue Tracking\", \"Third Party Advisory\"]}]",
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-203\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-43398\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-11-04T21:15:09.520\",\"lastModified\":\"2024-11-21T06:29:09.903\",\"vulnStatus\":\"Modified\",\"cveTags\":[{\"sourceIdentifier\":\"cve@mitre.org\",\"tags\":[\"disputed\"]}],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Crypto++ (aka Cryptopp) 8.6.0 and earlier contains a timing leakage in MakePublicKey(). There is a clear correlation between execution time and private key length, which may cause disclosure of the length information of the private key. This might allow attackers to conduct timing attacks. NOTE: this report is disputed by the vendor and multiple third parties. The execution-time differences are intentional. A user may make a choice of a longer key as a tradeoff between strength and performance. In making this choice, the amount of information leaked to an adversary is of infinitesimal value\"},{\"lang\":\"es\",\"value\":\"** EN DISPUTA ** Crypto++ (tambi\u00e9n se conoce como Cryptopp) versiones 8.6.0 y anteriores, contienen un filtrado de tiempo en la funci\u00f3n MakePublicKey(). Se presenta una clara correlaci\u00f3n entre el tiempo de ejecuci\u00f3n y la longitud de la clave privada, que puede causar una divulgaci\u00f3n de la informaci\u00f3n de la longitud de la clave privada. Esto podr\u00eda permitir a atacantes conducir ataques de tiempo. NOTA: este informe es discutido por el vendedor y por m\u00faltiples terceros. Las diferencias de tiempo de ejecuci\u00f3n son intencionadas. Un usuario puede elegir una clave m\u00e1s larga como compensaci\u00f3n entre la fuerza y el rendimiento. Al hacer esta elecci\u00f3n, la cantidad de informaci\u00f3n filtrada a un adversario es de valor infinitesimal\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"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-203\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cryptopp:crypto\\\\+\\\\+:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"8.6.0\",\"matchCriteriaId\":\"38083732-7F2F-45F1-B773-8BD7A039F08B\"}]}]}],\"references\":[{\"url\":\"https://cryptopp.com\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://github.com/weidai11/cryptopp/issues/1080\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://cryptopp.com\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://github.com/weidai11/cryptopp/issues/1080\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Third Party Advisory\"]}]}}"
  }
}


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.