vuln-ubuntu/data/osv/usn/USN-4487-1.json

{
  "schema_version": "1.7.0",
  "id": "USN-4487-1",
  "summary": "libx11 vulnerabilities",
  "details": "Todd Carson discovered that libx11 incorrectly handled certain memory\noperations. A local attacker could possibly use this issue to escalate\nprivileges. (CVE-2020-14344)\n\nJayden Rivers discovered that libx11 incorrectly handled locales. A local\nattacker could possibly use this issue to escalate privileges.\n(CVE-2020-14363)\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2020-14344",
    "UBUNTU-CVE-2020-14363"
  ],
  "related": [],
  "published": "2020-09-02T13:05:00Z",
  "modified": "2026-04-22T07:36:39Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libx11",
        "purl": "pkg:deb/ubuntu/libx11@2:1.6.3-1ubuntu2.2?arch=source&distro=xenial"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.3-1ubuntu2.2"
            }
          ]
        }
      ],
      "versions": [
        "2:1.6.3-1ubuntu2",
        "2:1.6.3-1ubuntu2.1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libx11-6",
            "binary_version": "2:1.6.3-1ubuntu2.2"
          },
          {
            "binary_name": "libx11-data",
            "binary_version": "2:1.6.3-1ubuntu2.2"
          },
          {
            "binary_name": "libx11-xcb1",
            "binary_version": "2:1.6.3-1ubuntu2.2"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:16.04:LTS",
          "cves": [
            {
              "id": "CVE-2020-14344",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            },
            {
              "id": "CVE-2020-14363",
              "severity": [
                {
                  "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": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libx11",
        "purl": "pkg:deb/ubuntu/libx11@2:1.6.4-3ubuntu0.3?arch=source&distro=bionic"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.4-3ubuntu0.3"
            }
          ]
        }
      ],
      "versions": [
        "2:1.6.4-3",
        "2:1.6.4-3ubuntu0.1",
        "2:1.6.4-3ubuntu0.2"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libx11-6",
            "binary_version": "2:1.6.4-3ubuntu0.3"
          },
          {
            "binary_name": "libx11-data",
            "binary_version": "2:1.6.4-3ubuntu0.3"
          },
          {
            "binary_name": "libx11-xcb1",
            "binary_version": "2:1.6.4-3ubuntu0.3"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:18.04:LTS",
          "cves": [
            {
              "id": "CVE-2020-14344",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            },
            {
              "id": "CVE-2020-14363",
              "severity": [
                {
                  "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": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libx11",
        "purl": "pkg:deb/ubuntu/libx11@2:1.6.9-2ubuntu1.1?arch=source&distro=focal"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.9-2ubuntu1.1"
            }
          ]
        }
      ],
      "versions": [
        "2:1.6.8-1",
        "2:1.6.9-2",
        "2:1.6.9-2ubuntu1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libx11-6",
            "binary_version": "2:1.6.9-2ubuntu1.1"
          },
          {
            "binary_name": "libx11-data",
            "binary_version": "2:1.6.9-2ubuntu1.1"
          },
          {
            "binary_name": "libx11-xcb1",
            "binary_version": "2:1.6.9-2ubuntu1.1"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:20.04:LTS",
          "cves": [
            {
              "id": "CVE-2020-14344",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            },
            {
              "id": "CVE-2020-14363",
              "severity": [
                {
                  "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": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4487-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-14344"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-14363"
    }
  ]
}