{
  "schema_version": "1.4.0",
  "id": "GHSA-7cqg-8449-rmfv",
  "modified": "2021-07-27T15:21:02Z",
  "published": "2021-08-25T21:01:27Z",
  "aliases": [
    "CVE-2019-20399"
  ],
  "summary": "Observable Discrepancy in libsecp256k1-rs",
  "details": "A timing vulnerability in the Scalar::check_overflow function in Parity libsecp256k1-rs before 0.3.1 potentially allows an attacker to leak information via a side-channel attack.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "libsecp256k1-rs"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.3.1"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20399"
    },
    {
      "type": "WEB",
      "url": "https://github.com/paritytech/libsecp256k1/commit/11ba23a9766a5079918cd9f515bc100bc8164b50"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2020-0156.html"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-203",
      "CWE-362"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2021-07-27T15:21:02Z",
    "nvd_published_at": "2020-01-23T00:15:00Z"
  }
}