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CVE-2017-9430

Status: ModifiedCritical (9.8)—💥 Exploit

Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a command line with a long name argument that is mishandled in a strcpy call for argv[0]. An example threat model is a web application that launches dnstracer with an untrusted name string.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (1)

Dnstracer Project — Dnstracer

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2017-9430",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": true,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
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        "type": "Primary",
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        "cvssData": {
          "scope": "UNCHANGED",
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          "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"
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  "published": "2017-06-05T11:29:00.183",
  "references": [
    {
      "url": "https://cxsecurity.com/issue/WLB-2017060030",
      "tags": [
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      "source": "cve@mitre.org"
    },
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      "url": "https://packetstormsecurity.com/files/142799/DNSTracer-1.8.1-Buffer-Overflow.html",
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      "tags": [
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    {
      "url": "https://www.exploit-db.com/exploits/42424/",
      "source": "cve@mitre.org"
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      "url": "https://cxsecurity.com/issue/WLB-2017060030",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://packetstormsecurity.com/files/142799/DNSTracer-1.8.1-Buffer-Overflow.html",
      "tags": [
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      "tags": [
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      "url": "https://www.exploit-db.com/exploits/42424/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a command line with a long name argument that is mishandled in a strcpy call for argv[0]. An example threat model is a web application that launches dnstracer with an untrusted name string."
    },
    {
      "lang": "es",
      "value": "Un desbordamiento de búfer en la región stack de la memoria en dnstracer hasta la versión 1.9, permite a los atacantes causar una denegación de servicio (bloqueo de aplicación) o posiblemente tener otro impacto no especificado por medio de una línea de comando con un argumento de nombre largo que se maneja inapropiadamente en una llamada de strcpy para argv[0]. Un ejemplo de modelo de amenaza es una aplicación web que inicia dnstracer con una cadena de nombre no seguro."
    }
  ],
  "lastModified": "2026-06-17T01:28:05.223",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "C30AAF2D-80BC-4C74-BA2A-9F1EAB1162E6",
              "versionEndIncluding": "1.9"
            }
          ],
          "operator": "OR"
        }
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  ],
  "sourceIdentifier": "cve@mitre.org"
}