{
  "schema_version": "1.3.1",
  "id": "GO-2020-0012",
  "modified": "0001-01-01T00:00:00Z",
  "published": "2021-04-14T20:04:52Z",
  "aliases": [
    "CVE-2020-9283",
    "GHSA-ffhg-7mh4-33c4"
  ],
  "summary": "Panic due to improper verification of cryptographic signatures in golang.org/x/crypto/ssh",
  "details": "An attacker can craft an ssh-ed25519 or sk-ssh-ed25519@openssh.com public key, such that the library will panic when trying to verify a signature with it. If verifying signatures using user supplied public keys, this may be used as a denial of service vector.",
  "affected": [
    {
      "package": {
        "name": "golang.org/x/crypto",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20200220183623-bac4c82f6975"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "golang.org/x/crypto/ssh",
            "symbols": [
              "CertChecker.Authenticate",
              "CertChecker.CheckCert",
              "CertChecker.CheckHostKey",
              "Certificate.Verify",
              "Dial",
              "NewClientConn",
              "NewPublicKey",
              "NewServerConn",
              "NewSignerFromKey",
              "NewSignerFromSigner",
              "ParseAuthorizedKey",
              "ParseKnownHosts",
              "ParsePrivateKey",
              "ParsePrivateKeyWithPassphrase",
              "ParsePublicKey",
              "ParseRawPrivateKey",
              "ParseRawPrivateKeyWithPassphrase",
              "ed25519PublicKey.Verify",
              "parseED25519",
              "parseSKEd25519",
              "skEd25519PublicKey.Verify"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "FIX",
      "url": "https://go.dev/cl/220357"
    },
    {
      "type": "FIX",
      "url": "https://go.googlesource.com/crypto/+/bac4c82f69751a6dd76e702d54b3ceb88adab236"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/3L45YRc91SY"
    }
  ],
  "credits": [
    {
      "name": "Alex Gaynor, Fish in a Barrel"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2020-0012"
  }
}