{
  "schema_version": "1.3.1",
  "id": "GO-2020-0038",
  "modified": "0001-01-01T00:00:00Z",
  "published": "2021-04-14T20:04:52Z",
  "aliases": [
    "CVE-2019-20786",
    "GHSA-7gfg-6934-mqq2"
  ],
  "summary": "Improper authentication in github.com/pion/dtls",
  "details": "Due to improper verification of packets, unencrypted packets containing application data are accepted after the initial handshake. This allows an attacker to inject arbitrary data which the client/server believes was encrypted, despite not knowing the session key.",
  "affected": [
    {
      "package": {
        "name": "github.com/pion/dtls",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.5.2"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "github.com/pion/dtls",
            "symbols": [
              "Client",
              "Conn.handleIncomingPacket",
              "Dial",
              "Listener.Accept",
              "Resume",
              "Server"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/pion/dtls/pull/128"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pion/dtls/commit/fd73a5df2ff0e1fb6ae6a51e2777d7a16cc4f4e0"
    },
    {
      "type": "WEB",
      "url": "https://www.usenix.org/system/files/sec20fall_fiterau-brostean_prepub.pdf"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2020-0038"
  }
}