CVE-2022-41721

2023-01-1323:15:09

CWE-444

[email protected]

web.nvd.nist.gov

215

cve-2022-41721

maxbyteshandler

request smuggling

http2

nvd

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.2 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

54.8%

JSON

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.

Affected configurations

NVD

Node

golangh2cRange<2022-11-04go

CPENameOperatorVersion
golang:h2cgolang h2clt2022-11-04

CPE	Name	Operator	Version
golang:h2c	golang h2c	lt	2022-11-04

CNA Affected

[
  {
    "vendor": "golang.org/x/net",
    "product": "golang.org/x/net/http2/h2c",
    "collectionURL": "https://pkg.go.dev",
    "packageName": "golang.org/x/net/http2/h2c",
    "versions": [
      {
        "version": "0.0.0-20220524220425-1d687d428aca",
        "lessThan": "0.1.1-0.20221104162952-702349b0e862",
        "status": "affected",
        "versionType": "semver"
      }
    ],
    "programRoutines": [
      {
        "name": "h2cHandler.ServeHTTP"
      },
      {
        "name": "h2cUpgrade"
      }
    ],
    "defaultStatus": "unaffected"
  }
]