Vulnerability-Lookup

FKIE_CVE-2022-23634

Vulnerability from fkie_nvd - Published: 2022-02-11 22:15 - Updated: 2026-06-17 04:30

Severity

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

Summary

Puma is a Ruby/Rack web server built for parallelism. Prior to `puma` version `5.6.2`, `puma` may not always call `close` on the response body. Rails, prior to version `7.0.2.2`, depended on the response body being closed in order for its `CurrentAttributes` implementation to work correctly. The combination of these two behaviors (Puma not closing the body + Rails' Executor implementation) causes information leakage. This problem is fixed in Puma versions 5.6.2 and 4.3.11. This problem is fixed in Rails versions 7.02.2, 6.1.4.6, 6.0.4.6, and 5.2.6.2. Upgrading to a patched Rails _or_ Puma version fixes the vulnerability.

References

URL	Tags
security-advisories@github.com	https://github.com/advisories/GHSA-rmj8-8hhh-gv5h	Third Party Advisory
security-advisories@github.com	https://github.com/advisories/GHSA-wh98-p28r-vrc9	Mitigation, Not Applicable, Third Party Advisory
security-advisories@github.com	https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bb	Patch, Third Party Advisory
security-advisories@github.com	https://github.com/puma/puma/security/advisories/GHSA-rmj8-8hhh-gv5h	Patch, Third Party Advisory
security-advisories@github.com	https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1	Mailing List, Mitigation, Patch, Third Party Advisory
security-advisories@github.com	https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html	Mailing List, Third Party Advisory
security-advisories@github.com	https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html	Mailing List, Third Party Advisory
security-advisories@github.com	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5/
security-advisories@github.com	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G/
security-advisories@github.com	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB/
security-advisories@github.com	https://security.gentoo.org/glsa/202208-28	Third Party Advisory
security-advisories@github.com	https://www.debian.org/security/2022/dsa-5146	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/advisories/GHSA-rmj8-8hhh-gv5h	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/advisories/GHSA-wh98-p28r-vrc9	Mitigation, Not Applicable, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bb	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/puma/puma/security/advisories/GHSA-rmj8-8hhh-gv5h	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1	Mailing List, Mitigation, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB/
af854a3a-2127-422b-91ae-364da2661108	https://security.gentoo.org/glsa/202208-28	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2022/dsa-5146	Third Party Advisory

Impacted products

Vendor	Product	Version
puma	puma	*
puma	puma	*
rubyonrails	rails	*
rubyonrails	rails	*
rubyonrails	rails	*
rubyonrails	rails	*
debian	debian_linux	9.0
debian	debian_linux	10.0
debian	debian_linux	11.0
fedoraproject	fedora	35
fedoraproject	fedora	36
fedoraproject	fedora	37

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "puma",
          "vendor": "puma",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 5.0.0, \u003c 5.6.2"
            },
            {
              "status": "affected",
              "version": "\u003c 4.3.11"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
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  ],
  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "Puma is a Ruby/Rack web server built for parallelism. Prior to `puma` version `5.6.2`, `puma` may not always call `close` on the response body. Rails, prior to version `7.0.2.2`, depended on the response body being closed in order for its `CurrentAttributes` implementation to work correctly. The combination of these two behaviors (Puma not closing the body + Rails\u0027 Executor implementation) causes information leakage. This problem is fixed in Puma versions 5.6.2 and 4.3.11. This problem is fixed in Rails versions 7.02.2, 6.1.4.6, 6.0.4.6, and 5.2.6.2. Upgrading to a patched Rails _or_ Puma version fixes the vulnerability."
    },
    {
      "lang": "es",
      "value": "Puma es un servidor web Ruby/Rack construido para el paralelismo. versiones anteriores a \"puma\" \"5.6.2\", \"puma\" no siempre llamaba a \"close\" en el cuerpo de la respuesta. Rails, versiones anteriores a \"7.0.2.2\", depend\u00eda de que el cuerpo de la respuesta estuviera cerrado para que su implementaci\u00f3n de \"CurrentAttributes\" funcionara correctamente. La combinaci\u00f3n de estos dos comportamientos (que Puma no cierre el cuerpo + la implementaci\u00f3n del ejecutor de Rails) causa un filtrado de informaci\u00f3n. Este problema ha sido solucionado en Puma versiones 5.6.2 y 4.3.11. Este problema se ha solucionado en las versiones de Rails versiones 7.02.2, 6.1.4.6, 6.0.4.6 y 5.2.6.2. La actualizaci\u00f3n a una versi\u00f3n parcheada de Rails _o_ de Puma corrige esta vulnerabilidad"
    }
  ],
  "id": "CVE-2022-23634",
  "lastModified": "2026-06-17T04:30:31.703",
  "metrics": {
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        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
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          "baseScore": 4.3,
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    "ssvcV203": [
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  "published": "2022-02-11T22:15:07.817",
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    {
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    {
      "source": "security-advisories@github.com",
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  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
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          "lang": "en",
          "value": "CWE-404"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2022-23634 (GCVE-0-2022-23634)

Vulnerability from cvelistv5 – Published: 2022-02-11 21:40 – Updated: 2025-04-23 19:05

Title

Information Exposure when using Puma with Rails

Summary

Severity

8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 15:56 UTC

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

GitHub_M mitre root

References

12 references

URL	Tags
https://github.com/puma/puma/security/advisories/…	x_refsource_CONFIRM
https://github.com/puma/puma/commit/b70f451fe8abc…	x_refsource_MISC
https://github.com/advisories/GHSA-rmj8-8hhh-gv5h	x_refsource_MISC
https://github.com/advisories/GHSA-wh98-p28r-vrc9	x_refsource_MISC
https://groups.google.com/g/ruby-security-ann/c/F…	x_refsource_MISC
https://www.debian.org/security/2022/dsa-5146	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST
https://security.gentoo.org/glsa/202208-28	vendor-advisoryx_refsource_GENTOO
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA

Impacted products

1 product

Vendor	Product	Version
puma	puma	Affected: >= 5.0.0, < 5.6.2 Affected: < 4.3.11

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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.