CVE-2024-27919

{
  "id": "CVE-2024-27919",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2024-27919",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-07-16T00:03:09.545061Z"
        }
      }
    ],
    "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
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "envoyproxy",
          "product": "envoy",
          "versions": [
            {
              "status": "affected",
              "version": ">= 1.29.0, < 1.29.2"
            }
          ]
        }
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      "affectedData": [
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          "cpes": [
            "cpe:2.3:a:envoyproxy:envoy:1.29.0:*:*:*:*:*:*:*"
          ],
          "vendor": "envoyproxy",
          "product": "envoy",
          "versions": [
            {
              "status": "affected",
              "version": "1.29.0",
              "lessThan": "1.29.2",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unknown"
        }
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    }
  ],
  "published": "2024-04-04T15:15:38.207",
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2024/04/03/16",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
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      "source": "security-advisories@github.com"
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    {
      "url": "http://www.openwall.com/lists/oss-security/2024/04/05/3",
      "tags": [
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      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/envoyproxy/envoy/commit/57a02565532c18eb9df972a3e8974be3ae59f2d5",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-gghf-vfxp-799r",
      "tags": [
        "Patch",
        "Third Party Advisory"
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      "source": "security-advisories@github.com"
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://github.com/envoyproxy/envoy/commit/57a02565532c18eb9df972a3e8974be3ae59f2d5",
      "tags": [
        "Patch"
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      "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-gghf-vfxp-799r",
      "tags": [
        "Patch",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://www.kb.cert.org/vuls/id/421644",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-390"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Envoy is a cloud-native, open-source edge and service proxy. In versions 1.29.0 and 1.29.1, theEnvoy HTTP/2 protocol stack is vulnerable to the flood of CONTINUATION frames. Envoy's HTTP/2 codec does not reset a request when header map limits have been exceeded. This allows an attacker to send an sequence of CONTINUATION frames without the END_HEADERS bit set causing unlimited memory consumption. This can lead to denial of service through memory exhaustion. Users should upgrade to versions 1.29.2 to mitigate the effects of the CONTINUATION flood. Note that this vulnerability is a regression in Envoy version 1.29.0 and 1.29.1 only. As a workaround, downgrade to version 1.28.1 or earlier or disable HTTP/2 protocol for downstream connections."
    },
    {
      "lang": "es",
      "value": "Envoy es un proxy de servicio y borde de código abierto y nativo de la nube. En las versiones 1.29.0 y 1.29.1, la pila de protocolos Envoy HTTP/2 es vulnerable a la avalancha de tramas de CONTINUACIÓN. El códec HTTP/2 de Envoy no restablece una solicitud cuando se exceden los límites del mapa de encabezado. Esto permite a un atacante enviar una secuencia de tramas CONTINUACIÓN sin que el bit END_HEADERS esté configurado, lo que provoca un consumo ilimitado de memoria. Esto puede provocar una denegación de servicio por agotamiento de la memoria. Los usuarios deben actualizar a las versiones 1.29.2 para mitigar los efectos de la inundación de CONTINUACIÓN. Tenga en cuenta que esta vulnerabilidad es una regresión en Envoy versión 1.29.0 y 1.29.1 únicamente. Como workaround, baje a la versión 1.28.1 o anterior o desactive el protocolo HTTP/2 para conexiones descendentes."
    }
  ],
  "lastModified": "2026-06-17T07:20:36.170",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:envoyproxy:envoy:1.29.0:*:*:*:*:*:*:*",
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            },
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  "sourceIdentifier": "security-advisories@github.com"
}