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CVE-2019-9497

Estado: ModificadaAlta (8.1)—

The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit. This vulnerability may allow an attacker to complete EAP-PWD authentication without knowing the password. However, unless the crypto library does not implement additional checks for the EC point, the attacker will not be able to derive the session key or complete the key exchange. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4 are affected. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (3)

Fedoraproject — FedoraW1.fi — HostapdW1.fi — WPA Supplicant

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2019-9497",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "cret@cert.org",
      "affectedData": [
        {
          "vendor": "Wi-Fi Alliance",
          "product": "hostapd with EAP-pwd support",
          "versions": [
            {
              "status": "affected",
              "version": "2.7",
              "versionType": "custom",
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            }
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          "product": "wpa_supplicant with EAP-pwd support",
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          "vendor": "Wi-Fi Alliance",
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          "product": "wpa_supplicant with SAE support",
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              "version": "2.4",
              "versionType": "custom",
              "lessThanOrEqual": "2.4"
            }
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    }
  ],
  "published": "2019-04-17T14:29:03.963",
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      "source": "cret@cert.org"
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      "source": "cret@cert.org"
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      "source": "cret@cert.org"
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      "source": "cret@cert.org"
    },
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      "source": "cret@cert.org"
    },
    {
      "url": "https://seclists.org/bugtraq/2019/May/40",
      "source": "cret@cert.org"
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    {
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc",
      "source": "cret@cert.org"
    },
    {
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      "tags": [
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      "source": "cret@cert.org"
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      "source": "cret@cert.org"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7AOFIEJTIZ/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://w1.fi/security/2019-4/",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.synology.com/security/advisory/Synology_SA_19_16",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cret@cert.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-301"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit. This vulnerability may allow an attacker to complete EAP-PWD authentication without knowing the password. However, unless the crypto library does not implement additional checks for the EC point, the attacker will not be able to derive the session key or complete the key exchange. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4 are affected. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected."
    },
    {
      "lang": "es",
      "value": "Las implementaciones de EAP-PWD en hostapd en EAP Server y wpa_supplicant en EAP Peer, no comprueban los valores escalares y de elementos en EAP-pwd-Commit. Esta vulnerabilidad puede permitir que un atacante complete la identificación EAP-PWD sin conocer la contraseña. Sin embargo, a menos que la biblioteca criptográfica no implemente comprobaciones adicionales para el punto EC, el atacante no podrá derivar la clave de sesión o completar el intercambio de claves. Tanto hostapd con soporte SAE como wpa_supplicant con soporte SAE anterior e incluyendo la versión 2.4 son  impactados. Tanto hostapd con soporte EAP-pwd como wpa_supplicant con soporte EAP-pwd anterior y con la versión 2.7 están afectaos."
    }
  ],
  "lastModified": "2026-06-17T02:43:49.350",
  "configurations": [
    {
      "nodes": [
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}