{
  "cveId": "CVE-2021-3156",
  "url": "https://patchblox.com/security/cve/CVE-2021-3156",
  "summary": "CVE-2021-3156 is fixed in 2 products on 1 platform, first by RHSA-2021:0218, released January 26, 2021. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on April 6, 2022. Patch Radar priority: Patch now.",
  "title": "sudo: Resolves: rhbz#1917732",
  "description": "Resolves: rhbz#1917732",
  "published": "2021-01-26T00:00:00Z",
  "severity": "IMPORTANT",
  "cvss": 7.8,
  "epss": 0.99962,
  "epssPercentile": 0.99976,
  "priority": "Patch now",
  "priorityTier": 1,
  "exploited": true,
  "vendorExploited": false,
  "disclosed": false,
  "kev": {
    "added": "2022-04-06T00:00:00Z",
    "due": "2022-04-27T00:00:00Z",
    "ransomware": false,
    "requiredAction": "Apply updates per vendor instructions."
  },
  "fixes": [
    {
      "platform": "linux",
      "product": "sudo",
      "release": "RHEL 8",
      "fixedVersion": "0:1.8.29-6.el8_3.1",
      "fix": "RHSA-2021:0218",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-0218",
      "released": "2021-01-26T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "sudo",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.8.21p2-3ubuntu1.4",
      "fix": "sudo 1.8.21p2-3ubuntu1.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-sudo-1.8.21p2-3ubuntu1.4",
      "released": "2021-01-26T10:00:00Z"
    },
    {
      "platform": "linux",
      "product": "sudo",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.8.31-1ubuntu1.2",
      "fix": "sudo 1.8.31-1ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-sudo-1.8.31-1ubuntu1.2",
      "released": "2021-01-26T10:00:00Z"
    },
    {
      "platform": "linux",
      "product": "sudo",
      "release": "ol 8",
      "fixedVersion": "0:1.8.29-6.el8_3.1",
      "fix": "ELSA-2021-0218",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-0218",
      "released": "2021-01-27T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "sudo-ldap",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.8.21p2-3ubuntu1.4",
      "fix": "sudo-ldap 1.8.21p2-3ubuntu1.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-sudo-ldap-1.8.21p2-3ubuntu1.4",
      "released": "2021-01-26T10:00:00Z"
    },
    {
      "platform": "linux",
      "product": "sudo-ldap",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.8.31-1ubuntu1.2",
      "fix": "sudo-ldap 1.8.31-1ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-sudo-ldap-1.8.31-1ubuntu1.2",
      "released": "2021-01-26T10:00:00Z"
    }
  ],
  "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"
  }
}