GSD-2021-42146

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers allow remote attackers to reuse the same epoch number within two times the TCP maximum segment lifetime, which is prohibited in RFC6347. This vulnerability allows remote attackers to obtain sensitive application (data of connected clients).
Aliases
Aliases
CVE-2021-42146
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{
  "GSD": {
    "alias": "CVE-2021-42146",
    "id": "GSD-2021-42146"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-42146"
      ],
      "details": "An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers allow remote attackers to reuse the same epoch number within two times the TCP maximum segment lifetime, which is prohibited in RFC6347. This vulnerability allows remote attackers to obtain sensitive application (data of connected clients).",
      "id": "GSD-2021-42146",
      "modified": "2023-12-13T01:23:06.711334Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-42146",
        "STATE": "PUBLIC"
      },
      "affects": {
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              "product": {
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                  {
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                    "version": {
                      "version_data": [
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                          "version_value": "n/a"
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              "vendor_name": "n/a"
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      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers allow remote attackers to reuse the same epoch number within two times the TCP maximum segment lifetime, which is prohibited in RFC6347. This vulnerability allows remote attackers to obtain sensitive application (data of connected clients)."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
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      },
      "references": {
        "reference_data": [
          {
            "name": "https://seclists.org/fulldisclosure/2024/Jan/19",
            "refsource": "MISC",
            "url": "https://seclists.org/fulldisclosure/2024/Jan/19"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:contiki-ng:tinydtls:2018-08-30:*:*:*:*:*:*:*",
                    "matchCriteriaId": "90402650-48E8-4C88-9306-B32811E56046",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
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            ]
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        ],
        "descriptions": [
          {
            "lang": "en",
            "value": "An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers allow remote attackers to reuse the same epoch number within two times the TCP maximum segment lifetime, which is prohibited in RFC6347. This vulnerability allows remote attackers to obtain sensitive application (data of connected clients)."
          },
          {
            "lang": "es",
            "value": "Se descubri\u00f3 un problema en Contiki-NG tinyDTLS a trav\u00e9s de la rama maestra 53a0d97. Los servidores DTLS permiten a atacantes remotos reutilizar el mismo n\u00famero de \u00e9poca dentro de dos veces la vida \u00fatil m\u00e1xima del segmento TCP, lo cual est\u00e1 prohibido en RFC6347. Esta vulnerabilidad permite a atacantes remotos obtener aplicaciones confidenciales (datos de clientes conectados)."
          }
        ],
        "id": "CVE-2021-42146",
        "lastModified": "2024-02-01T20:16:49.277",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
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        "published": "2024-01-24T19:15:08.483",
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        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-755"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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