Security advisory

{
  "id": "e646092f06ea2318606ef923abbe51086f0d853dbea1410b2d5a38de9ae356bf",
  "url": "https://osv.dev/vulnerability/CVE-2021-3798",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3798",
    "summary": "A flaw was found in openCryptoki. The openCryptoki Soft token does not check if an EC key is valid when an EC key is created via C_CreateObject, nor when C_DeriveKey is used with ECDH public data. This may allow a malicious user to extract the private key by performing an invalid curve attack.",
    "evidence": "osv:CVE-2021-3798",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-3798",
      "aliases": [
        "CVE-2021-3798"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/opencryptoki/opencryptoki",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8ab1059bd29b28dbeeae151310cc9beca88d1cb1"
                },
                {
                  "fixed": "4e3b43c3d8844402c04a66b55c6c940f965109f0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:opencryptoki_project:opencryptoki:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.17.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4e3b43c3d8844402c04a66b55c6c940f965109f0"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.16.0",
            "v3.15.1",
            "v3.15.0",
            "v3.14.0",
            "v3.13.0",
            "v3.12.1",
            "v3.12.0",
            "v3.11.1",
            "v3.11.0",
            "v3.10.0",
            "v3.9.0",
            "v3.8.2",
            "v3.8.0",
            "v3.8.1",
            "v3.7.0",
            "v3.6.2",
            "v3.6.1",
            "v3.6",
            "v3.5",
            "v3.4.1",
            "v3.4",
            "v3.3",
            "v3.2",
            "v3.1",
            "v2.4.3.1",
            "v3.0",
            "v2.4.3",
            "v2.3.3",
            "v2.3.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3798.json",
            "vanir_signatures": [
              {
                "id": "CVE-2021-3798-a513978c",
                "digest": {
                  "length": 744,
                  "function_hash": "227030742641434579281486111687377295738"
                },
                "source": "https://github.com/opencryptoki/opencryptoki/commit/4e3b43c3d8844402c04a66b55c6c940f965109f0",
                "target": {
                  "file": "usr/lib/soft_stdll/soft_specific.c",
                  "function": "fill_ec_key_from_privkey"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2021-3798-bd9a54be",
                "digest": {
                  "length": 572,
                  "function_hash": "167809855859216864502066761829954412651"
                },
                "source": "https://github.com/opencryptoki/opencryptoki/commit/4e3b43c3d8844402c04a66b55c6c940f965109f0",
                "target": {
                  "file": "usr/lib/soft_stdll/soft_specific.c",
                  "function": "fill_ec_key_from_pubkey"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2021-3798-e4f487ff",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "241914080668320224096387584555820029697",
                    "294749349881809309464343043695379726799",
                    "155825835143266065778361583573477398571",
                    "241914080668320224096387584555820029697",
                    "151463854885936926283904390379390757917",
                    "273130886101318911504810936600417370356"
                  ]
                },
                "source": "https://github.com/opencryptoki/opencryptoki/commit/4e3b43c3d8844402c04a66b55c6c940f965109f0",
                "target": {
                  "file": "usr/lib/soft_stdll/soft_specific.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T14:12:44Z"
          }
        }
      ],
      "modified": "2026-10-20T14:12:44.465005971Z",
      "provider": "osv",
      "references": [
        "https://access.redhat.com/security/cve/CVE-2021-3798",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1990591",
        "https://github.com/opencryptoki/opencryptoki/commit/4e3b43c3d8844402c04a66b55c6c940f965109f0",
        "https://github.com/opencryptoki/opencryptoki/pull/402"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-3798",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388719,
  "published_at": "2022-08-23T16:15:09.93+00:00"
}