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CVE-2023-6193

Estado: ModificadaMedia (5.3)—

quiche v. 0.15.0 through 0.19.0 was discovered to be vulnerable to unbounded queuing of path validation messages, which could lead to excessive resource consumption. QUIC path validation (RFC 9000 Section 8.2) requires that the recipient of a PATH_CHALLENGE frame responds by sending a PATH_RESPONSE. An unauthenticated remote attacker can exploit the vulnerability by sending PATH_CHALLENGE frames and manipulating the connection (e.g. by restricting the peer's congestion window size) so that PATH_RESPONSE frames can only be sent at the slower rate than they are received; leading to storage of path validation data in an unbounded queue. Quiche versions greater than 0.19.0 address this problem.

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)

Cloudflare — Quiche

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-6193",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cna@cloudflare.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cna@cloudflare.com",
      "affectedData": [
        {
          "vendor": "Cloudflare",
          "product": "quiche",
          "versions": [
            {
              "status": "affected",
              "version": "0.15.0",
              "versionType": "semver",
              "lessThanOrEqual": "0.19.0"
            }
          ],
          "packageName": "cloudflare-quiche",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2023-12-12T14:15:07.797",
  "references": [
    {
      "url": "https://datatracker.ietf.org/doc/html/rfc9000#section-8.2",
      "tags": [
        "Technical Description"
      ],
      "source": "cna@cloudflare.com"
    },
    {
      "url": "https://github.com/cloudflare/quiche/security/advisories/GHSA-w3vp-jw9m-f9pm",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cna@cloudflare.com"
    },
    {
      "url": "https://datatracker.ietf.org/doc/html/rfc9000#section-8.2",
      "tags": [
        "Technical Description"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/cloudflare/quiche/security/advisories/GHSA-w3vp-jw9m-f9pm",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cna@cloudflare.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "quiche v. 0.15.0 through 0.19.0 was discovered to be vulnerable to unbounded queuing of path validation messages, which could lead to excessive resource consumption.\nQUIC path validation (RFC 9000 Section 8.2) requires that the recipient of a PATH_CHALLENGE frame responds by sending a PATH_RESPONSE. An unauthenticated remote attacker can exploit the vulnerability by sending PATH_CHALLENGE frames and manipulating the connection (e.g. by restricting the peer's congestion window size) so that PATH_RESPONSE frames can only be sent at the slower rate than they are received; leading to storage of path validation data in an unbounded queue. \nQuiche versions greater than 0.19.0 address this problem."
    },
    {
      "lang": "es",
      "value": "Se descubrió que quiche v. 0.15.0 a 0.19.0 era vulnerable a colas ilimitadas de mensajes de validación de ruta, lo que podría provocar un consumo excesivo de recursos. La validación de ruta QUIC (RFC 9000 Sección 8.2) requiere que el destinatario de una trama PATH_CHALLENGE responda enviando una PATH_RESPONSE. Un atacante remoto no autenticado puede explotar la vulnerabilidad enviando tramas PATH_CHALLENGE y manipulando la conexión (por ejemplo, restringiendo el tamaño de la ventana de congestión del par) de modo que las tramas PATH_RESPONSE sólo puedan enviarse a una velocidad más lenta de la que se reciben; lo que lleva al almacenamiento de datos de validación de ruta en una cola ilimitada. Las versiones de Quiche superiores a 0.19.0 solucionan este problema."
    }
  ],
  "lastModified": "2026-06-17T06:50:16.490",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cloudflare:quiche:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "754F9BC1-68D8-4071-A987-42FFCD3AE06D",
              "versionEndIncluding": "0.19.0",
              "versionStartIncluding": "0.15.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cna@cloudflare.com"
}