{
  "cveId": "CVE-2020-21047",
  "url": "https://patchblox.com/security/cve/CVE-2020-21047",
  "summary": "CVE-2020-21047 is fixed in 4 products on 1 platform, first by elfutils 0.170-0.4ubuntu0.1\u002Besm1, released August 22, 2023. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "elfutils: The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service...",
  "description": "The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.",
  "published": "2023-08-22T12:16:00Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
  "epss": 0.00251,
  "epssPercentile": 0.16577,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "elfutils",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "0.180-1",
      "fix": "DEBIAN-CVE-2020-21047",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2020-21047",
      "released": "2023-08-22T19:16:09Z"
    },
    {
      "platform": "linux",
      "product": "elfutils",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "0.180-1",
      "fix": "DEBIAN-CVE-2020-21047",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2020-21047",
      "released": "2023-08-22T19:16:09Z"
    },
    {
      "platform": "linux",
      "product": "elfutils",
      "release": "Debian 14",
      "fixedVersion": "0.180-1",
      "fix": "DEBIAN-CVE-2020-21047",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2020-21047",
      "released": "2023-08-22T19:16:09Z"
    },
    {
      "platform": "linux",
      "product": "elfutils",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.170-0.4ubuntu0.1\u002Besm1",
      "fix": "elfutils 0.170-0.4ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-elfutils-0.170-0.4ubuntu0.1-esm1",
      "released": "2023-08-22T12:16:00Z"
    },
    {
      "platform": "linux",
      "product": "elfutils",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.176-1.1ubuntu0.1",
      "fix": "elfutils 0.176-1.1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-elfutils-0.176-1.1ubuntu0.1",
      "released": "2023-08-22T12:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libasm1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.170-0.4ubuntu0.1\u002Besm1",
      "fix": "libasm1 0.170-0.4ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libasm1-0.170-0.4ubuntu0.1-esm1",
      "released": "2023-08-22T12:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libasm1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.176-1.1ubuntu0.1",
      "fix": "libasm1 0.176-1.1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libasm1-0.176-1.1ubuntu0.1",
      "released": "2023-08-22T12:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libdw1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.170-0.4ubuntu0.1\u002Besm1",
      "fix": "libdw1 0.170-0.4ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libdw1-0.170-0.4ubuntu0.1-esm1",
      "released": "2023-08-22T12:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libdw1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.176-1.1ubuntu0.1",
      "fix": "libdw1 0.176-1.1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libdw1-0.176-1.1ubuntu0.1",
      "released": "2023-08-22T12:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libelf1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.170-0.4ubuntu0.1\u002Besm1",
      "fix": "libelf1 0.170-0.4ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libelf1-0.170-0.4ubuntu0.1-esm1",
      "released": "2023-08-22T12:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libelf1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.176-1.1ubuntu0.1",
      "fix": "libelf1 0.176-1.1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libelf1-0.176-1.1ubuntu0.1",
      "released": "2023-08-22T12:16:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}