{
  "schema_version": "1.7.0",
  "id": "USN-4236-2",
  "summary": "libgcrypt20 vulnerability",
  "details": "USN-4236-1 fixed a vulnerability in Libgcrypt. This update provides the\ncorresponding fix for Ubuntu 16.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that Libgcrypt was susceptible to a ECDSA timing attack.\n An attacker could possibly use this attack to recover sensitive\n information.\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2019-13627"
  ],
  "related": [],
  "published": "2020-01-14T13:00:37Z",
  "modified": "2026-04-22T07:36:38Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libgcrypt20",
        "purl": "pkg:deb/ubuntu/libgcrypt20@1.6.5-2ubuntu0.6?arch=source&distro=xenial"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.5-2ubuntu0.6"
            }
          ]
        }
      ],
      "versions": [
        "1.6.3-2ubuntu1",
        "1.6.4-3",
        "1.6.4-4",
        "1.6.4-5",
        "1.6.5-2",
        "1.6.5-2ubuntu0.2",
        "1.6.5-2ubuntu0.3",
        "1.6.5-2ubuntu0.4",
        "1.6.5-2ubuntu0.5"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgcrypt20",
            "binary_version": "1.6.5-2ubuntu0.6"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:16.04:LTS",
          "cves": [
            {
              "id": "CVE-2019-13627",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4236-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-13627"
    }
  ]
}