{
  "id": "CVE-2021-34433",
  "sourceIdentifier": "emo@eclipse.org",
  "published": "2021-08-20T17:15:07.687",
  "lastModified": "2021-08-26T14:02:34.797",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "In Eclipse Californium version 2.0.0 to 2.6.4 and 3.0.0-M1 to 3.0.0-M3, the certificate based (x509 and RPK) DTLS handshakes accidentally succeeds without verifying the server side's signature on the client side, if that signature is not included in the server's ServerKeyExchange."
    },
    {
      "lang": "es",
      "value": "En Eclipse Californium versiones 2.0.0 a 2.6.4 y 3.0.0-M1 a 3.0.0-M3, los handshakes DTLS basados en certificados (x509 y RPK) presentan \u00e9xito accidentalmente sin verificar la firma del lado del servidor en el lado del cliente, si esa firma no est\u00e1 incluida en el ServerKeyExchange del servidor."
    }
  ],
  "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:N/I:H/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "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:N/I:P/A:N",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "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-347"
        }
      ]
    },
    {
      "source": "emo@eclipse.org",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-322"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:eclipse:californium:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "2.0.0",
              "versionEndExcluding": "2.6.5",
              "matchCriteriaId": "65A08A46-AE52-493B-BD3B-06B7F33A6199"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:eclipse:californium:3.0.0:m1:*:*:*:*:*:*",
              "matchCriteriaId": "9664425C-0BC8-42FA-A128-4888792AABD6"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:eclipse:californium:3.0.0:m2:*:*:*:*:*:*",
              "matchCriteriaId": "5BAEC5E6-CADE-402A-8741-C6962C051A16"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:eclipse:californium:3.0.0:m3:*:*:*:*:*:*",
              "matchCriteriaId": "72226029-FA1A-41D5-BF95-A60C830C394A"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281",
      "source": "emo@eclipse.org",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ]
    }
  ]
}