FKIE_CVE-2019-18836

Vulnerability from fkie_nvd - Published: 2019-11-11 01:15 - Updated: 2026-06-17 02:25
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used."
References
cve@mitre.orghttps://blog.envoyproxy.ioVendor Advisory
cve@mitre.orghttps://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46Exploit, Third Party Advisory
cve@mitre.orghttps://github.com/istio/istio/issues/18229Exploit, Third Party Advisory
cve@mitre.orghttps://groups.google.com/forum/#%21forum/envoy-users
af854a3a-2127-422b-91ae-364da2661108https://blog.envoyproxy.ioVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/istio/istio/issues/18229Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://groups.google.com/forum/#%21forum/envoy-users
Impacted products
Vendor Product Version
envoyproxy envoy 1.12.0
istio istio *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:envoyproxy:envoy:1.12.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "64A23B79-2694-46D3-A796-DD647442B403",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BC70ED31-2985-4211-9C4E-B8F6566944BD",
              "versionEndIncluding": "1.3.3",
              "versionStartIncluding": "1.3.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used.\""
    },
    {
      "lang": "es",
      "value": "Envoy versi\u00f3n 1.12.0 permite una denegaci\u00f3n de servicio remota debido a bucles de recursos, como es demostrado por una conexi\u00f3n TCP inactiva que es capaz de mantener un subproceso o hilo de trabajo en un bucle ocupado infinito cuando la funci\u00f3n continue_on_listener_filters_timeout es usada."
    }
  ],
  "id": "CVE-2019-18836",
  "lastModified": "2026-06-17T02:25:26.320",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-11-11T01:15:10.210",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://blog.envoyproxy.io"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/istio/istio/issues/18229"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://groups.google.com/forum/#%21forum/envoy-users"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://blog.envoyproxy.io"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/istio/istio/issues/18229"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://groups.google.com/forum/#%21forum/envoy-users"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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