Vulnerability-Lookup

FKIE_CVE-2020-5416

Vulnerability from fkie_nvd - Published: 2020-08-21 22:15 - Updated: 2026-06-17 03:21

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

Cloud Foundry Routing (Gorouter), versions prior to 0.204.0, when used in a deployment with NGINX reverse proxies in front of the Gorouters, is potentially vulnerable to denial-of-service attacks in which an unauthenticated malicious attacker can send specially-crafted HTTP requests that may cause the Gorouters to be dropped from the NGINX backend pool.

References

	URL	Tags
	security@pivotal.io	https://www.cloudfoundry.org/blog/cve-2020-5416	Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://www.cloudfoundry.org/blog/cve-2020-5416	Vendor Advisory

Impacted products

	Vendor	Product	Version
	cloudfoundry	cf-deployment	*
	cloudfoundry	routing-release	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Routing",
          "vendor": "Cloud Foundry",
          "versions": [
            {
              "lessThan": "0.204.0",
              "status": "affected",
              "version": "All",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "CF Deployment",
          "vendor": "Cloud Foundry",
          "versions": [
            {
              "lessThan": "13.13.0",
              "status": "affected",
              "version": "All",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@pivotal.io"
    }
  ],
  "configurations": [
    {
      "nodes": [
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              "matchCriteriaId": "AAA9939F-B430-45EB-8B6A-E37E56D4258B",
              "versionEndExcluding": "13.13.0",
              "vulnerable": true
            },
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              "matchCriteriaId": "86F6E764-7191-4EDB-AC4A-E606961F8542",
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cloud Foundry Routing (Gorouter), versions prior to 0.204.0, when used in a deployment with NGINX reverse proxies in front of the Gorouters, is potentially vulnerable to denial-of-service attacks in which an unauthenticated malicious attacker can send specially-crafted HTTP requests that may cause the Gorouters to be dropped from the NGINX backend pool."
    },
    {
      "lang": "es",
      "value": "Cloud Foundry Routing (Gorouter), versiones anteriores a 0.204.0, cuando es usado en una implementaci\u00f3n con proxys inversos NGINX frente a los Gorouters, es potencialmente vulnerable a ataques de denegaci\u00f3n de servicio en los que un atacante malicioso no autenticado puede enviar peticiones HTTP especialmente dise\u00f1adas que pueden causar que los Gorouters sean eliminados del grupo de backend de NGINX."
    }
  ],
  "id": "CVE-2020-5416",
  "lastModified": "2026-06-17T03:21:27.257",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 4.0,
        "source": "security@pivotal.io",
        "type": "Secondary"
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    "cvssMetricV31": [
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2020-08-21T22:15:12.527",
  "references": [
    {
      "source": "security@pivotal.io",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.cloudfoundry.org/blog/cve-2020-5416"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.cloudfoundry.org/blog/cve-2020-5416"
    }
  ],
  "sourceIdentifier": "security@pivotal.io",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
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      "source": "security@pivotal.io",
      "type": "Secondary"
    },
    {
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        {
          "lang": "en",
          "value": "CWE-404"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2020-5416 (GCVE-0-2020-5416)

Vulnerability from cvelistv5 – Published: 2020-08-21 21:50 – Updated: 2024-09-16 16:53

Title

CF clusters with NGINX in front of them may be vulnerable to DoS

Summary

Severity

7.7 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

CWE

CWE-404 - Improper Resource Shutdown or Release

Assigner

pivotal

References

1 reference

URL	Tags
https://www.cloudfoundry.org/blog/cve-2020-5416	x_refsource_CONFIRM

Impacted products

2 products

Vendor	Product	Version
Cloud Foundry	Routing	Affected: All , < 0.204.0 (custom)
Cloud Foundry	CF Deployment	Affected: All , < 13.13.0 (custom)

Date Public

2020-08-14 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.