usn-4488-1
Vulnerability from osv_ubuntu
Published
2020-09-02 13:17
Modified
2026-04-22 07:36
Summary
xorg-server, xorg-server-hwe-16.04, xorg-server-hwe-18.04 vulnerabilities
Details

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the input extension protocol. A local attacker could possibly use this issue to escalate privileges. (CVE-2020-14346)

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly initialized memory. A local attacker could possibly use this issue to obtain sensitive information. (CVE-2020-14347)

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the XkbSelectEvents function. A local attacker could possibly use this issue to escalate privileges. (CVE-2020-14361)

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the XRecordRegisterClients function. A local attacker could possibly use this issue to escalate privileges. (CVE-2020-14362)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-14346",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14347",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14361",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14362",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "xdmx",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          },
          {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          },
          {
            "binary_name": "xmir",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          },
          {
            "binary_name": "xnest",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          },
          {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          },
          {
            "binary_name": "xserver-common",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          },
          {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          },
          {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          },
          {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          },
          {
            "binary_name": "xserver-xorg-xmir",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          },
          {
            "binary_name": "xvfb",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          },
          {
            "binary_name": "xwayland",
            "binary_version": "2:1.18.4-0ubuntu0.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "xorg-server",
        "purl": "pkg:deb/ubuntu/xorg-server@2:1.18.4-0ubuntu0.9?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.18.4-0ubuntu0.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.17.2-1ubuntu9",
        "2:1.17.2-1ubuntu10",
        "2:1.17.3-2ubuntu1",
        "2:1.17.3-2ubuntu2",
        "2:1.17.3-2ubuntu3",
        "2:1.17.3-2ubuntu4",
        "2:1.18.1-1ubuntu3",
        "2:1.18.1-1ubuntu4",
        "2:1.18.3-1ubuntu1",
        "2:1.18.3-1ubuntu2",
        "2:1.18.3-1ubuntu2.2",
        "2:1.18.3-1ubuntu2.3",
        "2:1.18.4-0ubuntu0.1",
        "2:1.18.4-0ubuntu0.2",
        "2:1.18.4-0ubuntu0.3",
        "2:1.18.4-0ubuntu0.4",
        "2:1.18.4-0ubuntu0.6",
        "2:1.18.4-0ubuntu0.7",
        "2:1.18.4-0ubuntu0.8"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
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            {
              "id": "CVE-2020-14346",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14347",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14361",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14362",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "xmir-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.3"
          },
          {
            "binary_name": "xorg-server-source-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.3"
          },
          {
            "binary_name": "xserver-xephyr-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.3"
          },
          {
            "binary_name": "xserver-xorg-core-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.3"
          },
          {
            "binary_name": "xserver-xorg-dev-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.3"
          },
          {
            "binary_name": "xserver-xorg-legacy-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.3"
          },
          {
            "binary_name": "xwayland-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "xorg-server-hwe-16.04",
        "purl": "pkg:deb/ubuntu/xorg-server-hwe-16.04@2:1.19.6-1ubuntu4.1~16.04.3?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
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        "2:1.18.4-1ubuntu6.1~16.04.2",
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        "2:1.19.3-1ubuntu1~16.04.3",
        "2:1.19.3-1ubuntu1~16.04.4",
        "2:1.19.5-0ubuntu2~16.04.1",
        "2:1.19.6-1ubuntu4~16.04.1",
        "2:1.19.6-1ubuntu4.1~16.04.1",
        "2:1.19.6-1ubuntu4.1~16.04.2"
      ]
    },
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              "id": "CVE-2020-14346",
              "severity": [
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                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14347",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14361",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14362",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "xdmx",
            "binary_version": "2:1.19.6-1ubuntu4.5"
          },
          {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.19.6-1ubuntu4.5"
          },
          {
            "binary_name": "xmir",
            "binary_version": "2:1.19.6-1ubuntu4.5"
          },
          {
            "binary_name": "xnest",
            "binary_version": "2:1.19.6-1ubuntu4.5"
          },
          {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.19.6-1ubuntu4.5"
          },
          {
            "binary_name": "xserver-common",
            "binary_version": "2:1.19.6-1ubuntu4.5"
          },
          {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.19.6-1ubuntu4.5"
          },
          {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.19.6-1ubuntu4.5"
          },
          {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:1.19.6-1ubuntu4.5"
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          {
            "binary_name": "xserver-xorg-xmir",
            "binary_version": "2:1.19.6-1ubuntu4.5"
          },
          {
            "binary_name": "xvfb",
            "binary_version": "2:1.19.6-1ubuntu4.5"
          },
          {
            "binary_name": "xwayland",
            "binary_version": "2:1.19.6-1ubuntu4.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "xorg-server",
        "purl": "pkg:deb/ubuntu/xorg-server@2:1.19.6-1ubuntu4.5?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.19.6-1ubuntu4.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.19.5-0ubuntu2",
        "2:1.19.6-1ubuntu1",
        "2:1.19.6-1ubuntu2",
        "2:1.19.6-1ubuntu3",
        "2:1.19.6-1ubuntu4",
        "2:1.19.6-1ubuntu4.1",
        "2:1.19.6-1ubuntu4.2",
        "2:1.19.6-1ubuntu4.3",
        "2:1.19.6-1ubuntu4.4"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-14346",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14347",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14361",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14362",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "xorg-server-source-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.2"
          },
          {
            "binary_name": "xserver-xephyr-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.2"
          },
          {
            "binary_name": "xserver-xorg-core-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.2"
          },
          {
            "binary_name": "xserver-xorg-dev-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.2"
          },
          {
            "binary_name": "xserver-xorg-legacy-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.2"
          },
          {
            "binary_name": "xwayland-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "xorg-server-hwe-18.04",
        "purl": "pkg:deb/ubuntu/xorg-server-hwe-18.04@2:1.20.8-2ubuntu2.2~18.04.2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.20.8-2ubuntu2.2~18.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.20.1-3ubuntu2.1~18.04.1",
        "2:1.20.4-1ubuntu3~18.04.1",
        "2:1.20.5+git20191008-0ubuntu1~18.04.1",
        "2:1.20.8-2ubuntu2.1~18.04.1",
        "2:1.20.8-2ubuntu2.2~18.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-14346",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14347",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14361",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14362",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "xdmx",
            "binary_version": "2:1.20.8-2ubuntu2.3"
          },
          {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.20.8-2ubuntu2.3"
          },
          {
            "binary_name": "xnest",
            "binary_version": "2:1.20.8-2ubuntu2.3"
          },
          {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.20.8-2ubuntu2.3"
          },
          {
            "binary_name": "xserver-common",
            "binary_version": "2:1.20.8-2ubuntu2.3"
          },
          {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.20.8-2ubuntu2.3"
          },
          {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.20.8-2ubuntu2.3"
          },
          {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:1.20.8-2ubuntu2.3"
          },
          {
            "binary_name": "xvfb",
            "binary_version": "2:1.20.8-2ubuntu2.3"
          },
          {
            "binary_name": "xwayland",
            "binary_version": "2:1.20.8-2ubuntu2.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "xorg-server",
        "purl": "pkg:deb/ubuntu/xorg-server@2:1.20.8-2ubuntu2.3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.20.8-2ubuntu2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.20.5+git20191008-0ubuntu1",
        "2:1.20.6-1ubuntu1",
        "2:1.20.7-2ubuntu1",
        "2:1.20.7-2ubuntu2",
        "2:1.20.8-2ubuntu2",
        "2:1.20.8-2ubuntu2.1",
        "2:1.20.8-2ubuntu2.2"
      ]
    }
  ],
  "aliases": [],
  "details": "Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the\ninput extension protocol. A local attacker could possibly use this issue to\nescalate privileges. (CVE-2020-14346)\n\nJan-Niklas Sohn discovered that the X.Org X Server incorrectly initialized\nmemory. A local attacker could possibly use this issue to obtain sensitive\ninformation. (CVE-2020-14347)\n\nJan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the\nXkbSelectEvents function. A local attacker could possibly use this issue to\nescalate privileges. (CVE-2020-14361)\n\nJan-Niklas Sohn discovered that the X.Org X Server incorrectly handled the\nXRecordRegisterClients function. A local attacker could possibly use this\nissue to escalate privileges. (CVE-2020-14362)\n",
  "id": "USN-4488-1",
  "modified": "2026-04-22T07:36:39Z",
  "published": "2020-09-02T13:17:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4488-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-14346"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-14347"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-14361"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-14362"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "xorg-server, xorg-server-hwe-16.04, xorg-server-hwe-18.04 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-14346",
    "UBUNTU-CVE-2020-14347",
    "UBUNTU-CVE-2020-14361",
    "UBUNTU-CVE-2020-14362"
  ]
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.