Vulnerability-Lookup

FKIE_CVE-2021-29479

Vulnerability from fkie_nvd - Published: 2021-06-29 15:15 - Updated: 2026-06-17 03:47

Severity

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

Summary

Ratpack is a toolkit for creating web applications. In versions prior to 1.9.0, a user supplied `X-Forwarded-Host` header can be used to perform cache poisoning of a cache fronting a Ratpack server if the cache key does not include the `X-Forwarded-Host` header as a cache key. Users are only vulnerable if they do not configure a custom `PublicAddress` instance. For versions prior to 1.9.0, by default, Ratpack utilizes an inferring version of `PublicAddress` which is vulnerable. This can be used to perform redirect cache poisoning where an attacker can force a cached redirect to redirect to their site instead of the intended redirect location. The vulnerability was patched in Ratpack 1.9.0. As a workaround, ensure that `ServerConfigBuilder::publicAddress` correctly configures the server in production.

References

URL	Tags
security-advisories@github.com	https://github.com/ratpack/ratpack/security/advisories/GHSA-w6rq-6h34-vh7q	Third Party Advisory
security-advisories@github.com	https://portswigger.net/web-security/web-cache-poisoning	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/ratpack/ratpack/security/advisories/GHSA-w6rq-6h34-vh7q	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://portswigger.net/web-security/web-cache-poisoning	Exploit, Third Party Advisory

Impacted products

	Vendor	Product	Version
	ratpack_project	ratpack	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "ratpack",
          "vendor": "ratpack",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.9.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ratpack_project:ratpack:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E972830A-9822-4DD9-BB64-9CC2B69018D5",
              "versionEndExcluding": "1.9.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Ratpack is a toolkit for creating web applications. In versions prior to 1.9.0, a user supplied `X-Forwarded-Host` header can be used to perform cache poisoning of a cache fronting a Ratpack server if the cache key does not include the `X-Forwarded-Host` header as a cache key. Users are only vulnerable if they do not configure a custom `PublicAddress` instance. For versions prior to 1.9.0, by default, Ratpack utilizes an inferring version of `PublicAddress` which is vulnerable. This can be used to perform redirect cache poisoning where an attacker can force a cached redirect to redirect to their site instead of the intended redirect location. The vulnerability was patched in Ratpack 1.9.0. As a workaround, ensure that `ServerConfigBuilder::publicAddress` correctly configures the server in production."
    },
    {
      "lang": "es",
      "value": "Ratpack es un kit de herramientas para crear aplicaciones web. En versiones anteriores a 1.9.0, una cabecera \"X-Forwarded-Host\" suministrada por el usuario puede ser usada para llevar a cabo el envenenamiento de la cach\u00e9 de un servidor Ratpack si la clave de la cach\u00e9 no incluye la cabecera \"X-Forwarded-Host\" como clave de la cach\u00e9. Unos usuarios s\u00f3lo son vulnerables si no configuran una instancia personalizada de \"PublicAddress\". Para versiones anteriores a 1.9.0, por defecto, Ratpack usa una versi\u00f3n inferida de \"PublicAddress\" que es vulnerable. Esto puede ser usado para llevar a cabo el envenenamiento de la cach\u00e9 de redireccionamiento, donde un atacante puede forzar un redireccionamiento en cach\u00e9 para redirigir a su sitio en lugar de la ubicaci\u00f3n de redireccionamiento prevista. La vulnerabilidad fue parcheada en Ratpack versi\u00f3n 1.9.0. Como soluci\u00f3n, aseg\u00farese de que \"ServerConfigBuilder::publicAddress\" configura correctamente el servidor en producci\u00f3n"
    }
  ],
  "id": "CVE-2021-29479",
  "lastModified": "2026-06-17T03:47:43.630",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "HIGH",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 4.9,
        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 4.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-06-29T15:15:18.870",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/ratpack/ratpack/security/advisories/GHSA-w6rq-6h34-vh7q"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://portswigger.net/web-security/web-cache-poisoning"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/ratpack/ratpack/security/advisories/GHSA-w6rq-6h34-vh7q"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://portswigger.net/web-security/web-cache-poisoning"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-807"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-29479 (GCVE-0-2021-29479)

Vulnerability from cvelistv5 – Published: 2021-06-29 14:35 – Updated: 2024-08-03 22:11

Title

Cached redirect poisoning via X-Forwarded-Host header

Summary

Severity

7 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L

CWE

CWE-807 - Reliance on Untrusted Inputs in a Security Decision

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://portswigger.net/web-security/web-cache-po…	x_refsource_MISC
https://github.com/ratpack/ratpack/security/advis…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
ratpack	ratpack	Affected: < 1.9.0

Show details on NVD website

JSON

To clipboard

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          },
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            "url": "https://github.com/ratpack/ratpack/security/advisories/GHSA-w6rq-6h34-vh7q"
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    "cna": {
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      ],
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      ],
      "metrics": [
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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.