{
  "cveId": "CVE-2019-18634",
  "url": "https://patchblox.com/security/cve/CVE-2019-18634",
  "summary": "CVE-2019-18634 is fixed in 2 products on 1 platform, first by sudo 1.8.21p2-3ubuntu1.2, released January 30, 2020. It is not reported as exploited. Patch Radar priority: High.",
  "title": "sudo: In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in t...",
  "description": "In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c.",
  "published": "2020-01-30T16:00:00Z",
  "severity": "Low",
  "cvss": 7.8,
  "epss": 0.19276,
  "epssPercentile": 0.97376,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "sudo",
      "release": "RHEL 8",
      "fixedVersion": "0:1.8.25p1-8.el8_1.1",
      "fix": "RHSA-2020:0487",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-0487",
      "released": "2020-02-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "sudo",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.8.21p2-3ubuntu1.2",
      "fix": "sudo 1.8.21p2-3ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-sudo-1.8.21p2-3ubuntu1.2",
      "released": "2020-01-30T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "sudo",
      "release": "ol 8",
      "fixedVersion": "0:1.8.25p1-8.el8_1.1",
      "fix": "ELSA-2020-0487",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-0487",
      "released": "2020-02-13T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "sudo-ldap",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.8.21p2-3ubuntu1.2",
      "fix": "sudo-ldap 1.8.21p2-3ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-sudo-ldap-1.8.21p2-3ubuntu1.2",
      "released": "2020-01-30T16:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-12T07:53:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}