{
  "schema_version": "1.7.0",
  "id": "USN-4263-2",
  "summary": "sudo vulnerability",
  "details": "USN-4263-1 fixed a vulnerability in Sudo. This update provides\nthe corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.\n\nOriginal advisory details:\n\n Joe Vennix discovered that Sudo incorrectly handled memory operations when\n the pwfeedback option is enabled. A local attacker could possibly use this\n issue to obtain unintended access to the administrator account.\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2019-18634"
  ],
  "related": [],
  "published": "2020-02-05T13:10:13Z",
  "modified": "2026-02-10T04:41:46Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "sudo",
        "purl": "pkg:deb/ubuntu/sudo@1.8.9p5-1ubuntu1.5+esm3?arch=source&distro=trusty/esm"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.8.9p5-1ubuntu1.5+esm3"
            }
          ]
        }
      ],
      "versions": [
        "1.8.6p3-0ubuntu3",
        "1.8.8-2ubuntu1",
        "1.8.8-2ubuntu2",
        "1.8.9p4-1ubuntu1",
        "1.8.9p4-1ubuntu2",
        "1.8.9p5-1ubuntu1",
        "1.8.9p5-1ubuntu1.1",
        "1.8.9p5-1ubuntu1.2",
        "1.8.9p5-1ubuntu1.3",
        "1.8.9p5-1ubuntu1.4",
        "1.8.9p5-1ubuntu1.5+esm1",
        "1.8.9p5-1ubuntu1.5+esm2"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sudo",
            "binary_version": "1.8.9p5-1ubuntu1.5+esm3"
          },
          {
            "binary_name": "sudo-ldap",
            "binary_version": "1.8.9p5-1ubuntu1.5+esm3"
          }
        ],
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:Pro:14.04:LTS",
          "cves": [
            {
              "id": "CVE-2019-18634",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "low"
                }
              ]
            }
          ]
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4263-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-18634"
    }
  ]
}