Security advisory

{
  "id": "cef88d3632fb8050f7109e317e990b19cfdd7bcba8f389a29ed8fabab780fd17",
  "url": "https://osv.dev/vulnerability/CVE-2020-12118",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-12118",
    "summary": "The keygen protocol implementation in Binance tss-lib before 1.2.0 allows attackers to generate crafted h1 and h2 parameters in order to compromise a signing round or obtain sensitive information from other parties.",
    "evidence": "osv:CVE-2020-12118",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-12118",
      "aliases": [
        "CVE-2020-12118",
        "GHSA-399h-cmvp-qgx5",
        "GO-2022-0769"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bnb-chain/tss-lib",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "c66e035bc1d25ceb1fd4dbf08a8f1a3bae3c4402"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:binance:tss-lib:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.2.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c66e035bc1d25ceb1fd4dbf08a8f1a3bae3c4402"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.2.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.1.1",
            "v1.1.0",
            "v1.0.0",
            "pre-protobufs"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12118.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:47.286428734Z",
      "provider": "osv",
      "references": [
        "https://github.com/binance-chain/tss-lib/releases/tag/v1.2.0",
        "https://github.com/binance-chain/tss-lib/pull/89"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-12118",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383821,
  "published_at": "2020-04-23T22:15:12.913+00:00"
}