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CVE-2018-19990

Estado: ModificadaCrítica (9.8)—

In the /HNAP1/SetWiFiVerifyAlpha message, the WPSPIN parameter is vulnerable, and the vulnerability affects D-Link DIR-822 B1 202KRb06 devices. In the SetWiFiVerifyAlpha.php source code, the WPSPIN parameter is saved in the $rphyinf1."/media/wps/enrollee/pin" and $rphyinf2."/media/wps/enrollee/pin" and $rphyinf3."/media/wps/enrollee/pin" internal configuration memory without any regex checking. And in the do_wps function of the wps.php source code, the data in $rphyinf3."/media/wps/enrollee/pin" is used with the wpatalk command without any regex checking. A vulnerable /HNAP1/SetWiFiVerifyAlpha XML message could have shell metacharacters in the WPSPIN element such as the `telnetd` string.

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 (1)

D-link — Dir-822 Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-19990",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 10,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-05-13T14:29:01.393",
  "references": [
    {
      "url": "https://github.com/pr0v3rbs/CVE/tree/master/CVE-2018-19986%20-%2019990",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/pr0v3rbs/CVE/tree/master/CVE-2018-19986%20-%2019990",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the /HNAP1/SetWiFiVerifyAlpha message, the WPSPIN parameter is vulnerable, and the vulnerability affects D-Link DIR-822 B1 202KRb06 devices. In the SetWiFiVerifyAlpha.php source code, the WPSPIN parameter is saved in the $rphyinf1.\"/media/wps/enrollee/pin\" and $rphyinf2.\"/media/wps/enrollee/pin\" and $rphyinf3.\"/media/wps/enrollee/pin\" internal configuration memory without any regex checking. And in the do_wps function of the wps.php source code, the data in $rphyinf3.\"/media/wps/enrollee/pin\" is used with the wpatalk command without any regex checking. A vulnerable /HNAP1/SetWiFiVerifyAlpha XML message could have shell metacharacters in the WPSPIN element such as the `telnetd` string."
    },
    {
      "lang": "es",
      "value": "En el mensaje HNAP1/SetWiFiVerifyAlpha, el parámetro WPSPIN es vulnerable y la vulnerabilidad afecta a los dispositivos D-Link DIR-822 B1 202KRb06. En el código fuente del archivo SetWiFiVerifyAlpha.php, el parámetro WPSPIN se guarda en la memoria de configuración interna de $rphyinf1.\"/Media/wps/enrollee/pin\" y $rphyinf2.\"/ Media/wps/enrollee/pin\" y $rphyinf3.\"/Media/wps/enrollee/pin\" sin ninguna comprobación regex. Y en la función do_wps del código fuente de wps.php, los datos en $rphyinf3.\"/ Media/wps/enrollee/pin\" se usan con el comando wpatalk sin ninguna comprobación regex. Un mensaje XML vulnerable HNAP1/SetWiFiVerifyAlpha podría tener metacaracteres shell en el elemento WPSPIN como la cadena `telnetd`."
    }
  ],
  "lastModified": "2026-06-17T01:50:14.940",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:d-link:dir-822_firmware:202krb06:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5224FC0A-44C6-4C4D-8EEC-BBA7BA13DF3D"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:dlink:dir-822:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "B3894F0E-37F8-4A89-87AC-1DB524D4AE04"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}