{
  "cveId": "CVE-2021-36369",
  "url": "https://patchblox.com/security/cve/CVE-2021-36369",
  "summary": "CVE-2021-36369 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2021-36369, released October 12, 2022. It is not reported as exploited. Patch Radar priority: High.",
  "title": "dropbear: An issue was discovered in Dropbear through 2020.81",
  "description": "An issue was discovered in Dropbear through 2020.81. Due to anon-RFC-compliant check of the available authentication methods in theclient-side SSH code, it is possible for an SSH server to change the loginprocess in its favor. This attack can bypass additional security measuressuch as FIDO2 tokens or SSH-Askpass. Thus, it allows an attacker to abuse aforwarded agent for logging on to another server unnoticed.",
  "published": "2022-10-12T14:15:00Z",
  "severity": "Medium",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
  "epss": 0.01864,
  "epssPercentile": 0.79423,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dropbear",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2022.82-1",
      "fix": "DEBIAN-CVE-2021-36369",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-36369",
      "released": "2022-10-12T21:15:09Z"
    },
    {
      "platform": "linux",
      "product": "dropbear",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2022.82-1",
      "fix": "DEBIAN-CVE-2021-36369",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-36369",
      "released": "2022-10-12T21:15:09Z"
    },
    {
      "platform": "linux",
      "product": "dropbear",
      "release": "Debian 14",
      "fixedVersion": "2022.82-1",
      "fix": "DEBIAN-CVE-2021-36369",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-36369",
      "released": "2022-10-12T21:15:09Z"
    },
    {
      "platform": "linux",
      "product": "dropbear",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2017.75-3ubuntu0.1~esm1",
      "fix": "dropbear 2017.75-3ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-dropbear-2017.75-3ubuntu0.1-esm1",
      "released": "2023-12-18T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dropbear",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2019.78-2ubuntu0.1~esm1",
      "fix": "dropbear 2019.78-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-dropbear-2019.78-2ubuntu0.1-esm1",
      "released": "2023-12-18T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dropbear",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2020.81-5ubuntu0.1",
      "fix": "dropbear 2020.81-5ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-dropbear-2020.81-5ubuntu0.1",
      "released": "2023-12-18T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dropbear",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "2020.81-3\u002Bdeb11u1",
      "fix": "dropbear 2020.81-3\u002Bdeb11u1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-dropbear-2020.81-3-deb11u1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "dropbear",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "2020.81-3\u002Bdeb11u1",
      "fix": "dropbear 2020.81-3\u002Bdeb11u1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-dropbear-2020.81-3-deb11u1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-bin",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2017.75-3ubuntu0.1~esm1",
      "fix": "dropbear-bin 2017.75-3ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-dropbear-bin-2017.75-3ubuntu0.1-esm1",
      "released": "2023-12-18T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-bin",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2019.78-2ubuntu0.1~esm1",
      "fix": "dropbear-bin 2019.78-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-dropbear-bin-2019.78-2ubuntu0.1-esm1",
      "released": "2023-12-18T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-bin",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2020.81-5ubuntu0.1",
      "fix": "dropbear-bin 2020.81-5ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-dropbear-bin-2020.81-5ubuntu0.1",
      "released": "2023-12-18T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-bin",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "2020.81-3\u002Bdeb11u1",
      "fix": "dropbear-bin 2020.81-3\u002Bdeb11u1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-dropbear-bin-2020.81-3-deb11u1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-bin",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "2020.81-3\u002Bdeb11u1",
      "fix": "dropbear-bin 2020.81-3\u002Bdeb11u1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-dropbear-bin-2020.81-3-deb11u1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-initramfs",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2017.75-3ubuntu0.1~esm1",
      "fix": "dropbear-initramfs 2017.75-3ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-dropbear-initramfs-2017.75-3ubuntu0.1-esm1",
      "released": "2023-12-18T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-initramfs",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2019.78-2ubuntu0.1~esm1",
      "fix": "dropbear-initramfs 2019.78-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-dropbear-initramfs-2019.78-2ubuntu0.1-esm1",
      "released": "2023-12-18T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-initramfs",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2020.81-5ubuntu0.1",
      "fix": "dropbear-initramfs 2020.81-5ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-dropbear-initramfs-2020.81-5ubuntu0.1",
      "released": "2023-12-18T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-initramfs",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "2020.81-3\u002Bdeb11u1",
      "fix": "dropbear-initramfs 2020.81-3\u002Bdeb11u1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-dropbear-initramfs-2020.81-3-deb11u1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-initramfs",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "2020.81-3\u002Bdeb11u1",
      "fix": "dropbear-initramfs 2020.81-3\u002Bdeb11u1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-dropbear-initramfs-2020.81-3-deb11u1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-run",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2017.75-3ubuntu0.1~esm1",
      "fix": "dropbear-run 2017.75-3ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-dropbear-run-2017.75-3ubuntu0.1-esm1",
      "released": "2023-12-18T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-run",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2019.78-2ubuntu0.1~esm1",
      "fix": "dropbear-run 2019.78-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-dropbear-run-2019.78-2ubuntu0.1-esm1",
      "released": "2023-12-18T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dropbear-run",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2020.81-5ubuntu0.1",
      "fix": "dropbear-run 2020.81-5ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-dropbear-run-2020.81-5ubuntu0.1",
      "released": "2023-12-18T07:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}