{
  "schema_version": "1.4.0",
  "id": "GHSA-xj78-h3gx-cm6v",
  "modified": "2022-08-29T20:06:54Z",
  "published": "2022-08-25T00:00:27Z",
  "aliases": [
    "CVE-2021-4209"
  ],
  "details": "A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
    }
  ],
  "affected": [],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4209"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2021-4209"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2044156"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gnutls/gnutls/-/issues/1306"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gnutls/gnutls/-/merge_requests/1503"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20220915-0005"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "severity": "MODERATE",
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-08-24T16:15:00Z"
  }
}