CVE-2023-29406 Insufficient sanitization of Host header in net/http

2023-07-1119:23:58

www.cve.org

cve-2023-29406

http/1 client

malicious injection

header validation

7.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.9%

JSON

The HTTP/1 client does not fully validate the contents of the Host header. A maliciously crafted Host header can inject additional headers or entire requests. With fix, the HTTP/1 client now refuses to send requests containing an invalid Request.Host or Request.URL.Host value.

CNA Affected

[
  {
    "vendor": "Go standard library",
    "product": "net/http",
    "collectionURL": "https://pkg.go.dev",
    "packageName": "net/http",
    "versions": [
      {
        "version": "0",
        "lessThan": "1.19.11",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "1.20.0-0",
        "lessThan": "1.20.6",
        "status": "affected",
        "versionType": "semver"
      }
    ],
    "programRoutines": [
      {
        "name": "Request.write"
      },
      {
        "name": "Client.CloseIdleConnections"
      },
      {
        "name": "Client.Do"
      },
      {
        "name": "Client.Get"
      },
      {
        "name": "Client.Head"
      },
      {
        "name": "Client.Post"
      },
      {
        "name": "Client.PostForm"
      },
      {
        "name": "Get"
      },
      {
        "name": "Head"
      },
      {
        "name": "Post"
      },
      {
        "name": "PostForm"
      },
      {
        "name": "Request.Write"
      },
      {
        "name": "Request.WriteProxy"
      },
      {
        "name": "Transport.CancelRequest"
      },
      {
        "name": "Transport.CloseIdleConnections"
      },
      {
        "name": "Transport.RoundTrip"
      }
    ],
    "defaultStatus": "unaffected"
  }
]