{
  "schema_version": "1.3.1",
  "id": "GO-2021-0241",
  "modified": "0001-01-01T00:00:00Z",
  "published": "2022-02-17T17:33:16Z",
  "aliases": [
    "CVE-2021-33197"
  ],
  "summary": "Attacker can drop certain headers in net/http/httputil",
  "details": "ReverseProxy can be made to forward certain hop-by-hop headers, including Connection. If the target of the ReverseProxy is itself a reverse proxy, this lets an attacker drop arbitrary headers, including those set by the ReverseProxy.Director.",
  "affected": [
    {
      "package": {
        "name": "stdlib",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.15.13"
            },
            {
              "introduced": "1.16.0-0"
            },
            {
              "fixed": "1.16.5"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "net/http/httputil",
            "symbols": [
              "ReverseProxy.ServeHTTP"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "FIX",
      "url": "https://go.dev/cl/321929"
    },
    {
      "type": "FIX",
      "url": "https://go.googlesource.com/go/+/950fa11c4cb01a145bb07eeb167d90a1846061b3"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI"
    },
    {
      "type": "REPORT",
      "url": "https://go.dev/issue/46313"
    }
  ],
  "credits": [
    {
      "name": "Mattias Grenfeldt (https://grenfeldt.dev)"
    },
    {
      "name": "Asta Olofsson"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2021-0241"
  }
}