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CVE-2023-40586

Estado: ModificadaAlta (7.5)—

OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. Due to the misuse of `log.Fatalf`, the application using coraza crashed after receiving crafted requests from attackers. The application will immediately crash after receiving a malicious request that triggers an error in `mime.ParseMediaType`. This issue was patched in version 3.0.1.

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)

Coraza — Coraza

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-40586",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-40586",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-02T14:38:08.187080Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
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  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
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          "vendor": "corazawaf",
          "product": "coraza",
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              "status": "affected",
              "version": "< 3.0.1"
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  "published": "2023-08-25T21:15:09.197",
  "references": [
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      "url": "https://github.com/corazawaf/coraza/commit/a5239ba3ce839e14d9b4f9486e1b4a403dcade8c",
      "tags": [
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      "url": "https://github.com/corazawaf/coraza/security/advisories/GHSA-c2pj-v37r-2p6h",
      "tags": [
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        "Vendor Advisory"
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    {
      "url": "https://github.com/corazawaf/coraza/commit/a5239ba3ce839e14d9b4f9486e1b4a403dcade8c",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
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    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. Due to the misuse of `log.Fatalf`, the application using coraza crashed after receiving crafted requests from attackers. The application will immediately crash after receiving a malicious request that triggers an error in `mime.ParseMediaType`. This issue was patched in version 3.0.1.\n"
    },
    {
      "lang": "es",
      "value": "OWASP Coraza WAF es una librería de firewall de aplicaciones web compatible con golang modsecurity. Debido al mal uso de `log.Fatalf`, la aplicación que utiliza coraza se bloquea después de recibir peticiones crafteadas de atacantes. La aplicación se bloquea inmediatamente después de recibir una petición maliciosa que provoca un error en `mime.ParseMediaType`. Este problema ha sido parcheado en la versión 3.0.1.\n"
    }
  ],
  "lastModified": "2026-06-17T06:18:35.653",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:coraza:coraza:3.0.0:*:*:*:*:go:*:*",
              "vulnerable": true,
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          "operator": "OR"
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  "sourceIdentifier": "security-advisories@github.com"
}