{
  "schema_version": "1.3.1",
  "id": "GO-2021-0058",
  "modified": "0001-01-01T00:00:00Z",
  "published": "2021-04-14T20:04:52Z",
  "aliases": [
    "CVE-2020-27846",
    "GHSA-4hq8-gmxx-h6w9"
  ],
  "summary": "Signature validation bypass due to XML processing error in github.com/crewjam/saml",
  "details": "Due to the behavior of encoding/xml, a crafted XML document may cause XML Digital Signature validation to be entirely bypassed, causing an unsigned document to appear signed.",
  "affected": [
    {
      "package": {
        "name": "github.com/crewjam/saml",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.3"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "github.com/crewjam/saml",
            "symbols": [
              "IdentityProvider.ServeSSO",
              "IdpAuthnRequest.Validate",
              "ServiceProvider.ParseResponse",
              "ServiceProvider.ParseXMLResponse",
              "ServiceProvider.ValidateLogoutResponseForm",
              "ServiceProvider.ValidateLogoutResponseRedirect",
              "ServiceProvider.ValidateLogoutResponseRequest"
            ]
          },
          {
            "path": "github.com/crewjam/saml/samlidp",
            "symbols": [
              "Server.HandlePutService",
              "getSPMetadata"
            ]
          },
          {
            "path": "github.com/crewjam/saml/samlsp",
            "symbols": [
              "FetchMetadata",
              "Middleware.ServeHTTP",
              "New",
              "ParseMetadata"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/crewjam/saml/commit/da4f1a0612c0a8dd0452cf8b3c7a6518f6b4d053"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2021-0058",
    "review_status": "REVIEWED"
  }
}