GSD-2021-34433

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
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.
Aliases
Aliases
CVE-2021-34433
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{
  "GSD": {
    "alias": "CVE-2021-34433",
    "description": "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\u0027s signature on the client side, if that signature is not included in the server\u0027s ServerKeyExchange.",
    "id": "GSD-2021-34433"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-34433"
      ],
      "details": "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\u0027s signature on the client side, if that signature is not included in the server\u0027s ServerKeyExchange.",
      "id": "GSD-2021-34433",
      "modified": "2023-12-13T01:23:14.567416Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security@eclipse.org",
        "ID": "CVE-2021-34433",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Eclipse Californium",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003e=",
                          "version_value": "2.0.0"
                        },
                        {
                          "version_affected": "\u003c=",
                          "version_value": "2.6.4"
                        },
                        {
                          "version_affected": "\u003e=",
                          "version_value": "3.0.0-M1"
                        },
                        {
                          "version_affected": "\u003c=",
                          "version_value": "3.0.0-M3"
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            "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\u0027s signature on the client side, if that signature is not included in the server\u0027s ServerKeyExchange."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-322: Key Exchange without Entity Authentication"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281",
            "refsource": "CONFIRM",
            "url": "https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281"
          }
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    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "[2.0.0,2.6.5),[3.0.0]",
          "affected_versions": "All versions starting from 2.0.0 before 2.6.5, version 3.0.0",
          "cvss_v2": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2021-08-26",
          "description": "In Eclipse Californium the certificate based (x509 and RPK) DTLS handshakes accidentally succeeds without verifying the server side\u0027s signature on the client side, if that signature is not included in the server\u0027s `ServerKeyExchange`.",
          "fixed_versions": [
            "2.6.5"
          ],
          "identifier": "CVE-2021-34433",
          "identifiers": [
            "CVE-2021-34433"
          ],
          "not_impacted": "All versions before 2.0.0, all versions starting from 2.6.5 before 3.0.0, all versions after 3.0.0",
          "package_slug": "maven/org.eclipse.californium/californium-core",
          "pubdate": "2021-08-20",
          "solution": "Upgrade to version 2.6.5 or above.",
          "title": "Improper Verification of Cryptographic Signature",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-34433",
            "https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281"
          ],
          "uuid": "30130b29-0ebe-49eb-89fd-bf7f8ced0503"
        }
      ]
    },
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            "children": [],
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                "cpe23Uri": "cpe:2.3:a:eclipse:californium:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.6.5",
                "versionStartIncluding": "2.0.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:eclipse:californium:3.0.0:m1:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:eclipse:californium:3.0.0:m2:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
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              {
                "cpe23Uri": "cpe:2.3:a:eclipse:californium:3.0.0:m3:*:*:*:*:*:*",
                "cpe_name": [],
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          "ID": "CVE-2021-34433"
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              "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\u0027s signature on the client side, if that signature is not included in the server\u0027s ServerKeyExchange."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-347"
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        "references": {
          "reference_data": [
            {
              "name": "https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281",
              "refsource": "CONFIRM",
              "tags": [
                "Issue Tracking",
                "Vendor Advisory"
              ],
              "url": "https://bugs.eclipse.org/bugs/show_bug.cgi?id=575281"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-08-26T14:02Z",
      "publishedDate": "2021-08-20T17:15Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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