{
  "schema_version": "1.3.1",
  "id": "GO-2023-1571",
  "modified": "0001-01-01T00:00:00Z",
  "published": "0001-01-01T00:00:00Z",
  "aliases": [
    "CVE-2022-41723",
    "GHSA-vvpx-j8f3-3w6h"
  ],
  "summary": "Denial of service via crafted HTTP/2 stream in net/http and golang.org/x/net",
  "details": "A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of service from a small number of small requests.",
  "affected": [
    {
      "package": {
        "name": "stdlib",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.19.6"
            },
            {
              "introduced": "1.20.0-0"
            },
            {
              "fixed": "1.20.1"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "net/http",
            "symbols": [
              "Client.Do",
              "Client.Get",
              "Client.Head",
              "Client.Post",
              "Client.PostForm",
              "Get",
              "Head",
              "ListenAndServe",
              "ListenAndServeTLS",
              "Post",
              "PostForm",
              "Serve",
              "ServeTLS",
              "Server.ListenAndServe",
              "Server.ListenAndServeTLS",
              "Server.Serve",
              "Server.ServeTLS",
              "Transport.RoundTrip"
            ]
          }
        ]
      }
    },
    {
      "package": {
        "name": "golang.org/x/net",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.0"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "golang.org/x/net/http2",
            "symbols": [
              "ClientConn.Close",
              "ClientConn.Ping",
              "ClientConn.RoundTrip",
              "ClientConn.Shutdown",
              "ConfigureServer",
              "ConfigureTransport",
              "ConfigureTransports",
              "ConnectionError.Error",
              "ErrCode.String",
              "FrameHeader.String",
              "FrameType.String",
              "FrameWriteRequest.String",
              "Framer.ReadFrame",
              "Framer.WriteContinuation",
              "Framer.WriteData",
              "Framer.WriteDataPadded",
              "Framer.WriteGoAway",
              "Framer.WriteHeaders",
              "Framer.WritePing",
              "Framer.WritePriority",
              "Framer.WritePushPromise",
              "Framer.WriteRSTStream",
              "Framer.WriteRawFrame",
              "Framer.WriteSettings",
              "Framer.WriteSettingsAck",
              "Framer.WriteWindowUpdate",
              "GoAwayError.Error",
              "ReadFrameHeader",
              "Server.ServeConn",
              "Setting.String",
              "SettingID.String",
              "SettingsFrame.ForeachSetting",
              "StreamError.Error",
              "Transport.CloseIdleConnections",
              "Transport.NewClientConn",
              "Transport.RoundTrip",
              "Transport.RoundTripOpt",
              "bufferedWriter.Flush",
              "bufferedWriter.Write",
              "chunkWriter.Write",
              "clientConnPool.GetClientConn",
              "connError.Error",
              "dataBuffer.Read",
              "duplicatePseudoHeaderError.Error",
              "gzipReader.Close",
              "gzipReader.Read",
              "headerFieldNameError.Error",
              "headerFieldValueError.Error",
              "noDialClientConnPool.GetClientConn",
              "noDialH2RoundTripper.RoundTrip",
              "pipe.Read",
              "priorityWriteScheduler.CloseStream",
              "priorityWriteScheduler.OpenStream",
              "pseudoHeaderError.Error",
              "requestBody.Close",
              "requestBody.Read",
              "responseWriter.Flush",
              "responseWriter.FlushError",
              "responseWriter.Push",
              "responseWriter.SetReadDeadline",
              "responseWriter.SetWriteDeadline",
              "responseWriter.Write",
              "responseWriter.WriteHeader",
              "responseWriter.WriteString",
              "serverConn.CloseConn",
              "serverConn.Flush",
              "stickyErrWriter.Write",
              "transportResponseBody.Close",
              "transportResponseBody.Read",
              "writeData.String"
            ]
          },
          {
            "path": "golang.org/x/net/http2/hpack",
            "symbols": [
              "Decoder.DecodeFull",
              "Decoder.Write",
              "Decoder.parseFieldLiteral",
              "Decoder.readString"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "REPORT",
      "url": "https://go.dev/issue/57855"
    },
    {
      "type": "FIX",
      "url": "https://go.dev/cl/468135"
    },
    {
      "type": "FIX",
      "url": "https://go.dev/cl/468295"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/V0aBFqaFs_E"
    }
  ],
  "credits": [
    {
      "name": "Philippe Antoine (Catena cyber)"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2023-1571",
    "review_status": "REVIEWED"
  }
}