GHSA-95X4-J7VC-H8MF

Vulnerability from github – Published: 2023-05-17 17:07 – Updated: 2023-05-17 17:07
VLAI?
Summary
ReactPHP's HTTP server continues parsing unused multipart parts after reaching input field and file upload limits
Details

Summary

Previous versions of ReactPHP's HTTP server component contain a potential DoS vulnerability that can cause high CPU load when processing large HTTP request bodies. This vulnerability has little to no impact on the default configuration, but can be exploited when explicitly using the RequestBodyBufferMiddleware with very large settings. This might lead to consuming large amounts of CPU time for processing requests and significantly delay or slow down the processing of legitimate user requests.

Patches

The supplied patch resolves this vulnerability for ReactPHP.

Workarounds

  • Keeping the request body limit using RequestBodyBufferMiddleware sensible will mitigate it.

  • Infrastructure or DevOps can place a reverse proxy in front of the ReactPHP HTTP server to filter out any excessive HTTP request bodies.

References

A similar vulnerability was discovered in PHP recently, see also PHP's security advisory (CVE-2023-0662). The fix is based on the PHP-FPM fix.

Severity ?
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "react/http"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.8.0"
            },
            {
              "fixed": "1.9.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-26044"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-05-17T17:07:57Z",
    "nvd_published_at": "2023-05-17T18:15:09Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nPrevious versions of ReactPHP\u0027s HTTP server component contain a potential DoS vulnerability that can cause high CPU load when processing large HTTP request bodies. This vulnerability has little to no impact on the default configuration, but can be exploited when explicitly using the  `RequestBodyBufferMiddleware` with very large settings. This might lead to consuming large amounts of CPU time for processing requests and significantly delay or slow down the processing of legitimate user requests.\n\n### Patches\n\nThe supplied patch resolves this vulnerability for ReactPHP.\n\n### Workarounds\n\n- Keeping the request body limit using `RequestBodyBufferMiddleware` sensible will mitigate it.\n\n- Infrastructure or DevOps can place a reverse proxy in front of the ReactPHP HTTP server to filter out any excessive HTTP request bodies.\n\n### References\n\nA similar vulnerability was discovered in PHP recently, see also [PHP\u0027s security advisory](https://github.com/php/php-src/security/advisories/GHSA-54hq-v5wp-fqgv) (CVE-2023-0662). The fix is based on the [PHP-FPM fix](https://github.com/php/php-src/commit/716de0cff539f46294ef70fe75d548cd66766370#diff-81d659aa9e83177ac08151f99cebf21ab331d22462c72a1039f59947e66f5a35).\n",
  "id": "GHSA-95x4-j7vc-h8mf",
  "modified": "2023-05-17T17:07:57Z",
  "published": "2023-05-17T17:07:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/php/php-src/security/advisories/GHSA-54hq-v5wp-fqgv"
    },
    {
      "type": "WEB",
      "url": "https://github.com/reactphp/http/security/advisories/GHSA-95x4-j7vc-h8mf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26044"
    },
    {
      "type": "WEB",
      "url": "https://github.com/php/php-src/commit/716de0cff539f46294ef70fe75d548cd66766370#diff-81d659aa9e83177ac08151f99cebf21ab331d22462c72a1039f59947e66f5a35"
    },
    {
      "type": "WEB",
      "url": "https://github.com/reactphp/http/commit/9681f764b80c45ebfb5fe2ea7da5bd3babfcdcfd"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/react/http/CVE-2023-26044.yaml"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-95x4-j7vc-h8mf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/reactphp/http"
    },
    {
      "type": "WEB",
      "url": "https://github.com/reactphp/http/releases/tag/v1.9.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ReactPHP\u0027s HTTP server continues parsing unused multipart parts after reaching input field and file upload limits"
}


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Sightings

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  • 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.