GHSA-FXG5-WQ6X-VR4W

Vulnerability from github – Published: 2023-01-14 00:30 – Updated: 2025-04-04 19:26
VLAI?
Summary
golang.org/x/net/http2/h2c vulnerable to request smuggling attack
Details

A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests.

Specific Go Packages Affected

golang.org/x/net/http2/h2c

Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "golang.org/x/net"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-20220524220425-1d687d428aca"
            },
            {
              "fixed": "0.1.1-0.20221104162952-702349b0e862"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-41721"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-01-20T22:40:06Z",
    "nvd_published_at": "2023-01-13T23:15:00Z",
    "severity": "HIGH"
  },
  "details": "A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests.\n\n### Specific Go Packages Affected\ngolang.org/x/net/http2/h2c",
  "id": "GHSA-fxg5-wq6x-vr4w",
  "modified": "2025-04-04T19:26:05Z",
  "published": "2023-01-14T00:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41721"
    },
    {
      "type": "PACKAGE",
      "url": "https://cs.opensource.google/go/x/net"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/cl/447396"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/issue/56352"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X3H3EWQXM2XL5AGBX6UL443JEJ3GQXJN"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X5DXTLLWN6HKI5I35EUZRBISTNZJ75GP"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2023-1495"
    }
  ],
  "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:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "golang.org/x/net/http2/h2c vulnerable to request smuggling attack"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.