USN-5026-2 (UBUNTU-CVE-2018-18020)

Vulnerability from osv_ubuntu – Published: 2021-08-02 14:15 – Updated: 2026-06-25 10:46 – Source website
VLAI
Summary
qpdf vulnerabilities
Details

USN-5026-1 fixed several vulnerabilities in QPDF. This update provides the corresponding update for Ubuntu 16.04 ESM. Original advisory details:

It was discovered that QPDF incorrectly handled certain malformed PDF files. A remote attacker could use this issue to cause QPDF to consume resources, resulting in a denial of service. (CVE-2018-18020)

It was discovered that QPDF incorrectly handled certain malformed PDF files. A remote attacker could use this issue to cause QPDF to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-36978)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-18020",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-36978",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libqpdf21",
            "binary_version": "8.0.2-3~16.04.1+esm1"
          },
          {
            "binary_name": "qpdf",
            "binary_version": "8.0.2-3~16.04.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "qpdf",
        "purl": "pkg:deb/ubuntu/qpdf@8.0.2-3~16.04.1+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.2-3~16.04.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.1.3-2",
        "5.1.3-3",
        "5.2.0-1",
        "5.2.0-2",
        "6.0.0-2",
        "8.0.2-3~16.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-5026-1 fixed several vulnerabilities in QPDF. This update provides\nthe corresponding update for Ubuntu 16.04 ESM.\nOriginal advisory details:\n\n It was discovered that QPDF incorrectly handled certain malformed PDF\n files. A remote attacker could use this issue to cause QPDF to consume\n resources, resulting in a denial of service. (CVE-2018-18020)\n\n It was discovered that QPDF incorrectly handled certain malformed PDF\n files. A remote attacker could use this issue to cause QPDF to crash,\n resulting in a denial of service, or possibly execute arbitrary code.\n (CVE-2021-36978)\n",
  "id": "USN-5026-2",
  "modified": "2026-06-25T10:46:01Z",
  "published": "2021-08-02T14:15:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5026-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-18020"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-36978"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "qpdf vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2018-18020",
    "UBUNTU-CVE-2021-36978"
  ]
}



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