CVE-2021-33560
Vulnerability from cvelistv5
Published
2021-06-08 00:00
Modified
2024-08-03 23:50
Severity ?
Summary
Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.
References
cve@mitre.orghttps://dev.gnupg.org/T5305Release Notes, Vendor Advisory
cve@mitre.orghttps://dev.gnupg.org/T5328Vendor Advisory
cve@mitre.orghttps://dev.gnupg.org/T5466Release Notes, Vendor Advisory
cve@mitre.orghttps://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61Patch, Vendor Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/06/msg00021.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/
cve@mitre.orghttps://security.gentoo.org/glsa/202210-13Third Party Advisory
cve@mitre.orghttps://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
cve@mitre.orghttps://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
cve@mitre.orghttps://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
cve@mitre.orghttps://www.oracle.com/security-alerts/cpuoct2021.htmlThird Party Advisory
Impacted products
n/an/a
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T23:50:43.035Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://dev.gnupg.org/T5328"
          },
          {
            "name": "[debian-lts-announce] 20210624 [SECURITY] [DLA 2691-1] libgcrypt20 security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html"
          },
          {
            "name": "FEDORA-2021-24d4e06195",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/"
          },
          {
            "name": "FEDORA-2021-31fdc84207",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://dev.gnupg.org/T5466"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://dev.gnupg.org/T5305"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
          },
          {
            "name": "GLSA-202210-13",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202210-13"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-10-31T00:00:00",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://dev.gnupg.org/T5328"
        },
        {
          "name": "[debian-lts-announce] 20210624 [SECURITY] [DLA 2691-1] libgcrypt20 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html"
        },
        {
          "name": "FEDORA-2021-24d4e06195",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/"
        },
        {
          "name": "FEDORA-2021-31fdc84207",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
        },
        {
          "url": "https://dev.gnupg.org/T5466"
        },
        {
          "url": "https://dev.gnupg.org/T5305"
        },
        {
          "url": "https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
        },
        {
          "name": "GLSA-202210-13",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202210-13"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-33560",
    "datePublished": "2021-06-08T00:00:00",
    "dateReserved": "2021-05-24T00:00:00",
    "dateUpdated": "2024-08-03T23:50:43.035Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-33560\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-06-08T11:15:07.767\",\"lastModified\":\"2023-11-07T03:35:52.620\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.\"},{\"lang\":\"es\",\"value\":\"Libgcrypt versiones anteriores a 1.8.8 y versiones 1.9.x anteriores a 1.9.3, maneja inapropiadamente el cifrado de ElGamal porque carece de cegado de exponentes para hacer frente a un ataque de canal lateral contra la funci\u00f3n  mpi_powm, y el tama\u00f1o de la ventana no se elige apropiadamente. Esto, por ejemplo, afecta el uso de ElGamal en OpenPGP.\"}],\"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:H/I:N/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:N\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\",\"baseScore\":5.0},\"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:gnupg:libgcrypt:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.8.8\",\"matchCriteriaId\":\"62143F8E-223E-44EF-A409-524C0EE4F910\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.9.0\",\"versionEndExcluding\":\"1.9.3\",\"matchCriteriaId\":\"492FE6EB-BD5E-4FEC-9C43-8A67C659C948\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E460AA51-FCDA-46B9-AE97-E6676AA5E194\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A930E247-0B43-43CB-98FF-6CE7B8189835\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"10323322-F6C0-4EA7-9344-736F7A80AA5F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5D423B62-8EFE-4EFD-A986-5F5ECE5B892F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C2A5B24D-BDF2-423C-98EA-A40778C01A05\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.14.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8E463039-5E48-4AA0-A42B-081053FA0111\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6F60E32F-0CA0-4C2D-9848-CB92765A9ACB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DF616620-88CE-4A77-B904-C1728A2E6F9B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3AA09838-BF13-46AC-BB97-A69F48B73A8A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_service_communication_proxy:1.15.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"175B97A7-0B00-4378-AD9F-C01B6D9FD570\"}]}]}],\"references\":[{\"url\":\"https://dev.gnupg.org/T5305\",\"source\":\"cve@mitre.org\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://dev.gnupg.org/T5328\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://dev.gnupg.org/T5466\",\"source\":\"cve@mitre.org\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://security.gentoo.org/glsa/202210-13\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuapr2022.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujan2022.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujul2022.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuoct2021.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"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 seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.