gsd-2022-24790
Vulnerability from gsd
Modified
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
Aliases
CVE-2022-24790


To clipboard 

{
  "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"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "puma",
            "purl": "pkg:gem/puma"
          }
        }
      ],
      "aliases": [
        "CVE-2022-24790",
        "GHSA-h99w-9q5r-gjq9"
      ],
      "details": "### 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",
      "id": "GSD-2022-24790",
      "modified": "2022-03-30T00:00:00.000Z",
      "published": "2022-03-30T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/puma/puma/security/advisories/GHSA-h99w-9q5r-gjq9"
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    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2022-24790",
      "cvss_v3": 9.1,
      "date": "2022-03-30",
      "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",
      "gem": "puma",
      "ghsa": "h99w-9q5r-gjq9",
      "patched_versions": [
        "~\u003e 4.3.12",
        "\u003e= 5.6.4"
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        "url": [
          "https://github.com/puma/puma/commit/5bb7d202e24dec00a898dca4aa11db391d7787a5"
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      "title": "HTTP Request Smuggling in puma",
      "url": "https://github.com/puma/puma/security/advisories/GHSA-h99w-9q5r-gjq9"
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          "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.",
          "fixed_versions": [],
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            "GHSA-h99w-9q5r-gjq9"
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          "package_slug": "gem/gitlab-puma",
          "pubdate": "2022-03-30",
          "solution": "Unfortunately, there is no solution available yet.",
          "title": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)",
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          "package_slug": "gem/puma",
          "pubdate": "2022-03-30",
          "solution": "Upgrade to versions 4.3.12, 5.6.4 or above.",
          "title": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)",
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            "baseScore": 5.0,
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            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
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          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
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            "attackVector": "NETWORK",
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            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
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        }
      },
      "lastModifiedDate": "2022-10-12T13:15Z",
      "publishedDate": "2022-03-30T22:15Z"
    }
  }
}


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