FKIE_CVE-2019-17185

Vulnerability from fkie_nvd - Published: 2020-03-21 01:15 - Updated: 2026-06-17 02:23
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes. This mean multiple threads use the same BN_CTX instance concurrently, resulting in crashes when concurrent EAP-pwd handshakes are initiated. This can be abused by an adversary as a Denial-of-Service (DoS) attack.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://freeradius.org/security/Vendor Advisory
cve@mitre.orghttps://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://freeradius.org/security/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20Release Notes, Third Party Advisory
Impacted products
Vendor Product Version
freeradius freeradius *
opensuse leap 15.1
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:freeradius:freeradius:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "02C9C42A-8038-4469-9745-5A19023A96ED",
              "versionEndExcluding": "3.0.20",
              "versionStartIncluding": "3.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
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    {
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes. This mean multiple threads use the same BN_CTX instance concurrently, resulting in crashes when concurrent EAP-pwd handshakes are initiated. This can be abused by an adversary as a Denial-of-Service (DoS) attack."
    },
    {
      "lang": "es",
      "value": "En FreeRADIUS versiones 3.0.x anteriores a 3.0.20, el m\u00f3dulo EAP-pwd utiliz\u00f3 una instancia OpenSSL BN_CTX global para manejar todos los protocolos de enlace. Esto significa que varios subprocesos utilizan la misma instancia de BN_CTX simult\u00e1neamente, resultando en bloqueos cuando los protocolos de enlace EAP-pwd son iniciados. Esto puede ser abusado por un adversario como un ataque de Denegaci\u00f3n de Servicio (DoS)."
    }
  ],
  "id": "CVE-2019-17185",
  "lastModified": "2026-06-17T02:23:25.993",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-03-21T01:15:12.243",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.html"
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      "tags": [
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      "url": "https://freeradius.org/security/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20"
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      "url": "https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-662"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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