vuln-ubuntu/data/osv/usn/USN-6168-2.json

{
  "schema_version": "1.7.0",
  "id": "USN-6168-2",
  "summary": "libx11 vulnerability",
  "details": "USN-6168-1 fixed a vulnerability in libx11. This update provides\nthe corresponding update for Ubuntu 14.04 ESM, Ubuntu 16.04 ESM,\nand Ubuntu 18.04 ESM.\n\nOriginal advisory details:\n\n Gregory James Duck discovered that libx11 incorrectly handled certain\n Request, Event, or Error IDs. If a user were tricked into connecting to a\n malicious X Server, a remote attacker could possibly use this issue to\n cause libx11 to crash, resulting in a denial of service.\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2023-3138"
  ],
  "related": [],
  "published": "2023-06-20T10:12:13Z",
  "modified": "2026-06-29T10:53:02Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "libx11",
        "purl": "pkg:deb/ubuntu/libx11@2:1.6.2-1ubuntu2.1+esm3?arch=source&distro=trusty/esm"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.2-1ubuntu2.1+esm3"
            }
          ]
        }
      ],
      "versions": [
        "2:1.6.1-1ubuntu1",
        "2:1.6.1-1ubuntu2",
        "2:1.6.2-1ubuntu1",
        "2:1.6.2-1ubuntu2",
        "2:1.6.2-1ubuntu2.1",
        "2:1.6.2-1ubuntu2.1+esm1",
        "2:1.6.2-1ubuntu2.1+esm2"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libx11-6",
            "binary_version": "2:1.6.2-1ubuntu2.1+esm3"
          },
          {
            "binary_name": "libx11-data",
            "binary_version": "2:1.6.2-1ubuntu2.1+esm3"
          },
          {
            "binary_name": "libx11-xcb1",
            "binary_version": "2:1.6.2-1ubuntu2.1+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-2023-3138",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libx11",
        "purl": "pkg:deb/ubuntu/libx11@2:1.6.3-1ubuntu2.2+esm2?arch=source&distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.3-1ubuntu2.2+esm2"
            }
          ]
        }
      ],
      "versions": [
        "2:1.6.3-1ubuntu2",
        "2:1.6.3-1ubuntu2.1",
        "2:1.6.3-1ubuntu2.2",
        "2:1.6.3-1ubuntu2.2+esm1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libx11-6",
            "binary_version": "2:1.6.3-1ubuntu2.2+esm2"
          },
          {
            "binary_name": "libx11-data",
            "binary_version": "2:1.6.3-1ubuntu2.2+esm2"
          },
          {
            "binary_name": "libx11-xcb1",
            "binary_version": "2:1.6.3-1ubuntu2.2+esm2"
          }
        ],
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:Pro:16.04:LTS",
          "cves": [
            {
              "id": "CVE-2023-3138",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libx11",
        "purl": "pkg:deb/ubuntu/libx11@2:1.6.4-3ubuntu0.4+esm1?arch=source&distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.4-3ubuntu0.4+esm1"
            }
          ]
        }
      ],
      "versions": [
        "2:1.6.4-3",
        "2:1.6.4-3ubuntu0.1",
        "2:1.6.4-3ubuntu0.2",
        "2:1.6.4-3ubuntu0.3",
        "2:1.6.4-3ubuntu0.4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libx11-6",
            "binary_version": "2:1.6.4-3ubuntu0.4+esm1"
          },
          {
            "binary_name": "libx11-data",
            "binary_version": "2:1.6.4-3ubuntu0.4+esm1"
          },
          {
            "binary_name": "libx11-xcb1",
            "binary_version": "2:1.6.4-3ubuntu0.4+esm1"
          }
        ],
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:Pro:18.04:LTS",
          "cves": [
            {
              "id": "CVE-2023-3138",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6168-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-3138"
    }
  ]
}