{
  "schema_version": "1.3.1",
  "id": "GO-2020-0013",
  "modified": "0001-01-01T00:00:00Z",
  "published": "2021-04-14T20:04:52Z",
  "aliases": [
    "CVE-2017-3204",
    "GHSA-xhjq-w7xm-p8qj"
  ],
  "summary": "Man-in-the-middle attack in golang.org/x/crypto/ssh",
  "details": "By default host key verification is disabled which allows for man-in-the-middle attacks against SSH clients if ClientConfig.HostKeyCallback is not set.",
  "affected": [
    {
      "package": {
        "name": "golang.org/x/crypto",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20170330155735-e4e2799dd7aa"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "golang.org/x/crypto/ssh",
            "symbols": [
              "Dial",
              "NewClientConn"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "FIX",
      "url": "https://go.dev/cl/340830"
    },
    {
      "type": "FIX",
      "url": "https://go.googlesource.com/crypto/+/e4e2799dd7aab89f583e1d898300d96367750991"
    },
    {
      "type": "REPORT",
      "url": "https://go.dev/issue/19767"
    },
    {
      "type": "WEB",
      "url": "https://bridge.grumpy-troll.org/2017/04/golang-ssh-security/"
    }
  ],
  "credits": [
    {
      "name": "Phil Pennock"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2020-0013"
  }
}