{
  "schema_version": "1.4.0",
  "id": "GHSA-j2r6-2m5c-vgh5",
  "modified": "2021-08-19T21:20:52Z",
  "published": "2021-08-25T20:45:20Z",
  "aliases": [
    "CVE-2019-25005"
  ],
  "summary": "Counter overflow in chacha20",
  "details": "An issue was discovered in the chacha20 crate before 0.2.3 for Rust. A ChaCha20 counter overflow makes it easier for attackers to determine plaintext.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "chacha20"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.3"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-25005"
    },
    {
      "type": "WEB",
      "url": "https://github.com/RustCrypto/stream-ciphers/pull/64"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/RustCrypto/stream-ciphers/tree/master/chacha20"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2019-0029.html"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-19T21:20:52Z",
    "nvd_published_at": null
  }
}