fkie_cve-2020-15522
Vulnerability from fkie_nvd
Published
2021-05-20 12:15
Modified
2024-11-21 05:05
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
Bouncy Castle BC Java before 1.66, BC C# .NET before 1.8.7, BC-FJA before 1.0.1.2, 1.0.2.1, and BC-FNA before 1.0.1.1 have a timing issue within the EC math library that can expose information about the private key when an attacker is able to observe timing information for the generation of multiple deterministic ECDSA signatures.
References
cve@mitre.orghttps://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522Third Party Advisory
cve@mitre.orghttps://github.com/bcgit/bc-java/wiki/CVE-2020-15522Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20210622-0007/
cve@mitre.orghttps://www.bouncycastle.org/releasenotes.htmlRelease Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/bcgit/bc-java/wiki/CVE-2020-15522Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210622-0007/
af854a3a-2127-422b-91ae-364da2661108https://www.bouncycastle.org/releasenotes.htmlRelease Notes, Vendor Advisory
Impacted products
Vendor Product Version
bouncycastle bc-csharp *
bouncycastle bouncy_castle_fips_.net_api *
bouncycastle legion-of-the-bouncy-castle-fips-java-api *
bouncycastle legion-of-the-bouncy-castle-fips-java-api *
bouncycastle the_bouncy_castle_crypto_package_for_java *


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{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:bouncycastle:bc-csharp:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "E617E18C-5957-450B-A6F2-F3A5E8202D3F",
                     versionEndExcluding: "1.8.7",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:bouncycastle:bouncy_castle_fips_.net_api:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "4A4C68F3-451F-46C7-932A-1D04828CB87B",
                     versionEndExcluding: "1.0.1.1",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-fips-java-api:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "51B90541-F4AC-43FF-A8F7-61012EB03377",
                     versionEndExcluding: "1.0.1.2",
                     vulnerable: true,
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                     matchCriteriaId: "2B951DBC-3F6D-4BA1-81C1-98852EF32760",
                     versionEndExcluding: "1.0.2.1",
                     versionStartIncluding: "1.0.2",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:bouncycastle:the_bouncy_castle_crypto_package_for_java:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "A7D7F6F7-8F74-41E0-9AFA-2FB26773DF69",
                     versionEndExcluding: "1.66",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "Bouncy Castle BC Java before 1.66, BC C# .NET before 1.8.7, BC-FJA before 1.0.1.2, 1.0.2.1, and BC-FNA before 1.0.1.1 have a timing issue within the EC math library that can expose information about the private key when an attacker is able to observe timing information for the generation of multiple deterministic ECDSA signatures.",
      },
      {
         lang: "es",
         value: "Bouncy Castle BC Java versiones anteriores a 1.66, BC C # .NET versiones anteriores a 1.8.7, BC-FJA versiones anteriores a 1.0.1.2, 1.0.2.1 y BC-FNA versiones anteriores a 1.0.1.1, presentan un problema de sincronización dentro de la biblioteca EC math que puede exponer información sobre la clave privada cuando un atacante es capaz de  observar información de sincronización para la generación de múltiples firmas ECDSA deterministas",
      },
   ],
   id: "CVE-2020-15522",
   lastModified: "2024-11-21T05:05:41.333",
   metrics: {
      cvssMetricV2: [
         {
            acInsufInfo: false,
            baseSeverity: "MEDIUM",
            cvssData: {
               accessComplexity: "MEDIUM",
               accessVector: "NETWORK",
               authentication: "NONE",
               availabilityImpact: "NONE",
               baseScore: 4.3,
               confidentialityImpact: "PARTIAL",
               integrityImpact: "NONE",
               vectorString: "AV:N/AC:M/Au:N/C:P/I:N/A:N",
               version: "2.0",
            },
            exploitabilityScore: 8.6,
            impactScore: 2.9,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: false,
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "HIGH",
               attackVector: "NETWORK",
               availabilityImpact: "NONE",
               baseScore: 5.9,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "HIGH",
               integrityImpact: "NONE",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
               version: "3.1",
            },
            exploitabilityScore: 2.2,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2021-05-20T12:15:08.003",
   references: [
      {
         source: "cve@mitre.org",
         tags: [
            "Third Party Advisory",
         ],
         url: "https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522",
      },
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      },
      {
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         url: "https://www.bouncycastle.org/releasenotes.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
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      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
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         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
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            "Vendor Advisory",
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         url: "https://www.bouncycastle.org/releasenotes.html",
      },
   ],
   sourceIdentifier: "cve@mitre.org",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-362",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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