Vulnerability-Lookup

GSD-2022-24790

Vulnerability from gsd - Updated: 2022-03-30 00:00

Details

### Impact When using Puma behind a proxy that does not properly validate that the incoming HTTP request matches the RFC7230 standard, Puma and the frontend proxy may disagree on where a request starts and ends. This would allow requests to be smuggled via the front-end proxy to Puma. The following vulnerabilities are addressed by this advisory: - Lenient parsing of `Transfer-Encoding` headers, when unsupported encodings should be rejected and the final encoding must be `chunked`. - Lenient parsing of malformed `Content-Length` headers and chunk sizes, when only digits and hex digits should be allowed. - Lenient parsing of duplicate `Content-Length` headers, when they should be rejected. - Lenient parsing of the ending of chunked segments, when they should end with `\r\n`. ### Patches The vulnerability has been fixed in 5.6.4 and 4.3.12. ### Workarounds When deploying a proxy in front of Puma, turning on any and all functionality to make sure that the request matches the RFC7230 standard. These proxy servers are known to have "good" behavior re: this standard and upgrading Puma may not be necessary. Users are encouraged to validate for themselves. - Nginx (latest) - Apache (latest) - Haproxy 2.5+ - Caddy (latest) - Traefik (latest) ### References [HTTP Request Smuggling](https://portswigger.net/web-security/request-smuggling)

Aliases

CVE-2022-24790

JSON

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{
  "GSD": {
    "alias": "CVE-2022-24790",
    "description": "Puma is a simple, fast, multi-threaded, parallel HTTP 1.1 server for Ruby/Rack applications. When using Puma behind a proxy that does not properly validate that the incoming HTTP request matches the RFC7230 standard, Puma and the frontend proxy may disagree on where a request starts and ends. This would allow requests to be smuggled via the front-end proxy to Puma. The vulnerability has been fixed in 5.6.4 and 4.3.12. Users are advised to upgrade as soon as possible. Workaround: when deploying a proxy in front of Puma, turning on any and all functionality to make sure that the request matches the RFC7230 standard.",
    "id": "GSD-2022-24790",
    "references": [
      "https://www.suse.com/security/cve/CVE-2022-24790.html",
      "https://security.archlinux.org/CVE-2022-24790",
      "https://www.debian.org/security/2022/dsa-5146",
      "https://access.redhat.com/errata/RHSA-2022:8532"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
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      "description": "### Impact\n\nWhen using Puma behind a proxy that does not properly validate that the\nincoming HTTP request matches the RFC7230 standard, Puma and the frontend\nproxy may disagree on where a request starts and ends. This would allow\nrequests to be smuggled via the front-end proxy to Puma.\n\nThe following vulnerabilities are addressed by this advisory:\n- Lenient parsing of `Transfer-Encoding` headers, when unsupported encodings\n  should be rejected and the final encoding must be `chunked`.\n- Lenient parsing of malformed `Content-Length` headers and chunk sizes, when\n  only digits and hex digits should be allowed.\n- Lenient parsing of duplicate `Content-Length` headers, when they should be\n  rejected.\n- Lenient parsing of the ending of chunked segments, when they should end\n  with `\\r\\n`.\n\n### Patches\n\nThe vulnerability has been fixed in 5.6.4 and 4.3.12.\n\n### Workarounds\n\nWhen deploying a proxy in front of Puma, turning on any and all functionality\nto make sure that the request matches the RFC7230 standard.\n\nThese proxy servers are known to have \"good\" behavior re: this standard and\nupgrading Puma may not be necessary. Users are encouraged to validate for\nthemselves.\n\n- Nginx (latest)\n- Apache (latest)\n- Haproxy 2.5+\n- Caddy (latest)\n- Traefik (latest)\n\n### References\n\n[HTTP Request Smuggling](https://portswigger.net/web-security/request-smuggling)\n",
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}

CVE-2022-24790 (GCVE-0-2022-24790)

Vulnerability from cvelistv5 – Published: 2022-03-30 21:50 – Updated: 2025-04-23 18:43

Title

HTTP Request Smuggling in puma

Summary

Puma is a simple, fast, multi-threaded, parallel HTTP 1.1 server for Ruby/Rack applications. When using Puma behind a proxy that does not properly validate that the incoming HTTP request matches the RFC7230 standard, Puma and the frontend proxy may disagree on where a request starts and ends. This would allow requests to be smuggled via the front-end proxy to Puma. The vulnerability has been fixed in 5.6.4 and 4.3.12. Users are advised to upgrade as soon as possible. Workaround: when deploying a proxy in front of Puma, turning on any and all functionality to make sure that the request matches the RFC7230 standard.

Severity

9.1 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 15:50 UTC

CWE

CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7820 records in the last 180 days details

References

8 references

URL	Tags
https://github.com/puma/puma/security/advisories/…	x_refsource_CONFIRM
https://github.com/puma/puma/commit/5bb7d202e24de…	x_refsource_MISC
https://www.debian.org/security/2022/dsa-5146	vendor-advisoryx_refsource_DEBIAN
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: < 4.3.12 Affected: >= 5.0.0, < 5.6.4

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GHSA-H99W-9Q5R-GJQ9

Vulnerability from github – Published: 2022-03-30 21:48 – Updated: 2022-08-16 19:37

Summary

Puma vulnerable to HTTP Request Smuggling

Details

When using Puma behind a proxy that does not properly validate that the incoming HTTP request matches the RFC7230 standard, Puma and the frontend proxy may disagree on where a request starts and ends. This would allow requests to be smuggled via the front-end proxy to Puma.

The following vulnerabilities are addressed by this advisory: - Lenient parsing of Transfer-Encoding headers, when unsupported encodings should be rejected and the final encoding must be chunked. - Lenient parsing of malformed Content-Length headers and chunk sizes, when only digits and hex digits should be allowed. - Lenient parsing of duplicate Content-Length headers, when they should be rejected. - Lenient parsing of the ending of chunked segments, when they should end with \r\n.

The vulnerability has been fixed in 5.6.4 and 4.3.12. When deploying a proxy in front of Puma, turning on any and all functionality to make sure that the request matches the RFC7230 standard.

These proxy servers are known to have "good" behavior re: this standard and upgrading Puma may not be necessary. Users are encouraged to validate for themselves.

Nginx (latest)
Apache (latest)
Haproxy 2.5+
Caddy (latest)
Traefik (latest)

Severity

9.1 (Critical)


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

Show details on source website

JSON

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        "ecosystem": "RubyGems",
        "name": "puma"
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    "github_reviewed_at": "2022-03-30T21:48:50Z",
    "nvd_published_at": "2022-03-30T22:15:00Z",
    "severity": "CRITICAL"
  },
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      "type": "CVSS_V3"
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  "summary": "Puma vulnerable to HTTP Request Smuggling"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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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.

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GSD-2022-24790

CVE-2022-24790 (GCVE-0-2022-24790)

GHSA-H99W-9Q5R-GJQ9

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