{
  "schema_version": "1.7.0",
  "id": "USN-4656-2",
  "summary": "xorg-server vulnerabilities",
  "details": "USN-4656-1 fixed several vulnerabilities in X.Org. This update provides\nthe corresponding update for Ubuntu 14.04 ESM.\n\nOriginal advisory details:\n\n Jan-Niklas Sohn discovered that the X.Org X Server XKB extension\n incorrectly handled certain inputs. A local attacker could possibly use\n this issue to escalate privileges.\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2020-14360",
    "UBUNTU-CVE-2020-25712"
  ],
  "related": [],
  "published": "2020-12-07T15:14:43Z",
  "modified": "2026-04-22T07:36:58Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "xorg-server",
        "purl": "pkg:deb/ubuntu/xorg-server@2:1.15.1-0ubuntu2.11+esm3?arch=source&distro=trusty/esm"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.15.1-0ubuntu2.11+esm3"
            }
          ]
        }
      ],
      "versions": [
        "2:1.14.3-3ubuntu2",
        "2:1.14.3-3ubuntu3",
        "2:1.14.3-3ubuntu4",
        "2:1.14.3-5ubuntu1",
        "2:1.14.4-1ubuntu1",
        "2:1.14.4-1ubuntu2",
        "2:1.14.4.901-0ubuntu2",
        "2:1.14.5-1ubuntu2",
        "2:1.14.5-1ubuntu4",
        "2:1.15.0-1ubuntu1",
        "2:1.15.0-1ubuntu2",
        "2:1.15.0-1ubuntu3",
        "2:1.15.0-1ubuntu4",
        "2:1.15.0-1ubuntu6",
        "2:1.15.0-1ubuntu7",
        "2:1.15.1-0ubuntu1",
        "2:1.15.1-0ubuntu2",
        "2:1.15.1-0ubuntu2.1",
        "2:1.15.1-0ubuntu2.4",
        "2:1.15.1-0ubuntu2.5",
        "2:1.15.1-0ubuntu2.6",
        "2:1.15.1-0ubuntu2.7",
        "2:1.15.1-0ubuntu2.9",
        "2:1.15.1-0ubuntu2.10",
        "2:1.15.1-0ubuntu2.11",
        "2:1.15.1-0ubuntu2.11+esm2"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "xdmx",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3"
          },
          {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3"
          },
          {
            "binary_name": "xnest",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3"
          },
          {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3"
          },
          {
            "binary_name": "xserver-common",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3"
          },
          {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3"
          },
          {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3"
          },
          {
            "binary_name": "xserver-xorg-xmir",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3"
          },
          {
            "binary_name": "xvfb",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3"
          }
        ],
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:Pro:14.04:LTS",
          "cves": [
            {
              "id": "CVE-2020-14360",
              "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": "Ubuntu",
                  "score": "medium"
                }
              ]
            },
            {
              "id": "CVE-2020-25712",
              "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-4656-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-14360"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-25712"
    }
  ]
}