USN-4269-1 (UBUNTU-CVE-2018-16888)

Vulnerability from osv_ubuntu – Published: 2020-02-05 16:39 – Updated: 2026-04-27 14:11 – Source website
VLAI
Summary
systemd vulnerabilities
Details

It was discovered that systemd incorrectly handled certain PIDFile files. A local attacker could possibly use this issue to trick systemd into killing privileged processes. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-16888)

It was discovered that systemd incorrectly handled certain udevadm trigger commands. A local attacker could possibly use this issue to cause systemd to consume resources, leading to a denial of service. (CVE-2019-20386)

Jann Horn discovered that systemd incorrectly handled services that use the DynamicUser property. A local attacker could possibly use this issue to access resources owned by a different service in the future. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-3843, CVE-2019-3844)

Tavis Ormandy discovered that systemd incorrectly handled certain Polkit queries. A local attacker could use this issue to cause systemd to crash, resulting in a denial of service, or possibly execute arbitrary code and escalate privileges. (CVE-2020-1712)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-16888",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2019-20386",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-1712",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
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            "binary_name": "libnss-myhostname",
            "binary_version": "229-4ubuntu21.27"
          },
          {
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            "binary_version": "229-4ubuntu21.27"
          },
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          },
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          },
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          },
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            "binary_name": "systemd-journal-remote",
            "binary_version": "229-4ubuntu21.27"
          },
          {
            "binary_name": "systemd-sysv",
            "binary_version": "229-4ubuntu21.27"
          },
          {
            "binary_name": "udev",
            "binary_version": "229-4ubuntu21.27"
          }
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      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "systemd",
        "purl": "pkg:deb/ubuntu/systemd@229-4ubuntu21.27?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
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            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
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      "versions": [
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        "227-2ubuntu1",
        "227-2ubuntu2",
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        "229-4ubuntu12",
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        "229-4ubuntu21.2",
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        "229-4ubuntu21.16",
        "229-4ubuntu21.17",
        "229-4ubuntu21.19",
        "229-4ubuntu21.21",
        "229-4ubuntu21.22",
        "229-4ubuntu21.23"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-3843",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2019-3844",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2019-20386",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-1712",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnss-myhostname",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "libnss-mymachines",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "libnss-resolve",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "libnss-systemd",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "libpam-systemd",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "libsystemd0",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "libudev1",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "systemd",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "systemd-container",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "systemd-coredump",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "systemd-journal-remote",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "systemd-sysv",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "systemd-tests",
            "binary_version": "237-3ubuntu10.38"
          },
          {
            "binary_name": "udev",
            "binary_version": "237-3ubuntu10.38"
          }
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      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "systemd",
        "purl": "pkg:deb/ubuntu/systemd@237-3ubuntu10.38?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
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            {
              "fixed": "237-3ubuntu10.38"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "234-2ubuntu12",
        "235-2ubuntu3",
        "235-3ubuntu2",
        "235-3ubuntu3",
        "237-3ubuntu3",
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        "237-3ubuntu6",
        "237-3ubuntu7",
        "237-3ubuntu8",
        "237-3ubuntu10",
        "237-3ubuntu10.2",
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        "237-3ubuntu10.4",
        "237-3ubuntu10.6",
        "237-3ubuntu10.9",
        "237-3ubuntu10.11",
        "237-3ubuntu10.12",
        "237-3ubuntu10.13",
        "237-3ubuntu10.15",
        "237-3ubuntu10.17",
        "237-3ubuntu10.19",
        "237-3ubuntu10.20",
        "237-3ubuntu10.21",
        "237-3ubuntu10.22",
        "237-3ubuntu10.23",
        "237-3ubuntu10.24",
        "237-3ubuntu10.25",
        "237-3ubuntu10.26",
        "237-3ubuntu10.28",
        "237-3ubuntu10.29",
        "237-3ubuntu10.31",
        "237-3ubuntu10.33"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that systemd incorrectly handled certain PIDFile files.\nA local attacker could possibly use this issue to trick systemd into\nkilling privileged processes. This issue only affected Ubuntu 16.04 LTS.\n(CVE-2018-16888)\n\nIt was discovered that systemd incorrectly handled certain udevadm trigger\ncommands. A local attacker could possibly use this issue to cause systemd\nto consume resources, leading to a denial of service. (CVE-2019-20386)\n\nJann Horn discovered that systemd incorrectly handled services that use the\nDynamicUser property. A local attacker could possibly use this issue to\naccess resources owned by a different service in the future. This issue\nonly affected Ubuntu 18.04 LTS. (CVE-2019-3843, CVE-2019-3844)\n\nTavis Ormandy discovered that systemd incorrectly handled certain Polkit\nqueries. A local attacker could use this issue to cause systemd to crash,\nresulting in a denial of service, or possibly execute arbitrary code and\nescalate privileges. (CVE-2020-1712)\n",
  "id": "USN-4269-1",
  "modified": "2026-04-27T14:11:25Z",
  "published": "2020-02-05T16:39:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4269-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-16888"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-3843"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-3844"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-20386"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-1712"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "systemd vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2018-16888",
    "UBUNTU-CVE-2019-3843",
    "UBUNTU-CVE-2019-3844",
    "UBUNTU-CVE-2019-20386",
    "UBUNTU-CVE-2020-1712"
  ]
}



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