gsd-2020-11501
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.
Aliases
Aliases
CVE-2020-11501


To clipboard 

{
   GSD: {
      alias: "CVE-2020-11501",
      description: "GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.",
      id: "GSD-2020-11501",
      references: [
         "https://www.suse.com/security/cve/CVE-2020-11501.html",
         "https://www.debian.org/security/2020/dsa-4652",
         "https://access.redhat.com/errata/RHSA-2020:1998",
         "https://advisories.mageia.org/CVE-2020-11501.html",
         "https://linux.oracle.com/cve/CVE-2020-11501.html",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2020-11501",
         ],
         details: "GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.",
         id: "GSD-2020-11501",
         modified: "2023-12-13T01:22:06.668764Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
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            ID: "CVE-2020-11501",
            STATE: "PUBLIC",
         },
         affects: {
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               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "n/a",
                              version: {
                                 version_data: [
                                    {
                                       version_value: "n/a",
                                    },
                                 ],
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               },
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               {
                  name: "GLSA-202004-06",
                  refsource: "GENTOO",
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               },
               {
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               },
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                  name: "https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31",
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                  url: "https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31",
               },
               {
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                  url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/",
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         },
      },
      "nvd.nist.gov": {
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                  cpe_match: [
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                  cpe_match: [
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         cve: {
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               ID: "CVE-2020-11501",
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            description: {
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                     value: "GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.",
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            problemtype: {
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                     name: "https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31",
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         },
         impact: {
            baseMetricV2: {
               acInsufInfo: false,
               cvssV2: {
                  accessComplexity: "MEDIUM",
                  accessVector: "NETWORK",
                  authentication: "NONE",
                  availabilityImpact: "NONE",
                  baseScore: 5.8,
                  confidentialityImpact: "PARTIAL",
                  integrityImpact: "PARTIAL",
                  vectorString: "AV:N/AC:M/Au:N/C:P/I:P/A:N",
                  version: "2.0",
               },
               exploitabilityScore: 8.6,
               impactScore: 4.9,
               obtainAllPrivilege: false,
               obtainOtherPrivilege: false,
               obtainUserPrivilege: false,
               severity: "MEDIUM",
               userInteractionRequired: false,
            },
            baseMetricV3: {
               cvssV3: {
                  attackComplexity: "HIGH",
                  attackVector: "NETWORK",
                  availabilityImpact: "NONE",
                  baseScore: 7.4,
                  baseSeverity: "HIGH",
                  confidentialityImpact: "HIGH",
                  integrityImpact: "HIGH",
                  privilegesRequired: "NONE",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  version: "3.1",
               },
               exploitabilityScore: 2.2,
               impactScore: 5.2,
            },
         },
         lastModifiedDate: "2021-07-21T11:39Z",
         publishedDate: "2020-04-03T13:15Z",
      },
   },
}


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