vuln-ubuntu/data/osv/usn/USN-6407-1.json

{
  "schema_version": "1.7.0",
  "id": "USN-6407-1",
  "summary": "libx11 vulnerabilities",
  "details": "Gregory James Duck discovered that libx11 incorrectly handled certain\nkeyboard symbols. If a user were tricked into connecting to a malicious X\nserver, a remote attacker could use this issue to cause libx11 to crash,\nresulting in a denial of service, or possibly execute arbitrary code.\n(CVE-2023-43785)\n\nYair Mizrahi discovered that libx11 incorrectly handled certain malformed\nXPM image files. If a user were tricked into opening a specially crafted\nXPM image file, a remote attacker could possibly use this issue to consume\nmemory, leading to a denial of service. (CVE-2023-43786)\n\nYair Mizrahi discovered that libx11 incorrectly handled certain malformed\nXPM image files. If a user were tricked into opening a specially crafted\nXPM image file, a remote attacker could use this issue to cause libx11 to\ncrash, leading to a denial of service, or possibly execute arbitrary code.\n(CVE-2023-43787)\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2023-43785",
    "UBUNTU-CVE-2023-43786",
    "UBUNTU-CVE-2023-43787"
  ],
  "related": [],
  "published": "2023-10-03T16:57:57Z",
  "modified": "2026-04-27T14:11:31Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libx11",
        "purl": "pkg:deb/ubuntu/libx11@2:1.6.9-2ubuntu1.6?arch=source&distro=focal"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.9-2ubuntu1.6"
            }
          ]
        }
      ],
      "versions": [
        "2:1.6.8-1",
        "2:1.6.9-2",
        "2:1.6.9-2ubuntu1",
        "2:1.6.9-2ubuntu1.1",
        "2:1.6.9-2ubuntu1.2",
        "2:1.6.9-2ubuntu1.5"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libx11-6",
            "binary_version": "2:1.6.9-2ubuntu1.6"
          },
          {
            "binary_name": "libx11-data",
            "binary_version": "2:1.6.9-2ubuntu1.6"
          },
          {
            "binary_name": "libx11-xcb1",
            "binary_version": "2:1.6.9-2ubuntu1.6"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:20.04:LTS",
          "cves": [
            {
              "id": "CVE-2023-43785",
              "severity": [
                {
                  "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": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            },
            {
              "id": "CVE-2023-43786",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            },
            {
              "id": "CVE-2023-43787",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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:22.04:LTS",
        "name": "libx11",
        "purl": "pkg:deb/ubuntu/libx11@2:1.7.5-1ubuntu0.3?arch=source&distro=jammy"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.7.5-1ubuntu0.3"
            }
          ]
        }
      ],
      "versions": [
        "2:1.7.2-1",
        "2:1.7.2-2",
        "2:1.7.2-2build1",
        "2:1.7.5-1",
        "2:1.7.5-1ubuntu0.2"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libx11-6",
            "binary_version": "2:1.7.5-1ubuntu0.3"
          },
          {
            "binary_name": "libx11-data",
            "binary_version": "2:1.7.5-1ubuntu0.3"
          },
          {
            "binary_name": "libx11-xcb1",
            "binary_version": "2:1.7.5-1ubuntu0.3"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:22.04:LTS",
          "cves": [
            {
              "id": "CVE-2023-43785",
              "severity": [
                {
                  "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": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            },
            {
              "id": "CVE-2023-43786",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            },
            {
              "id": "CVE-2023-43787",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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-6407-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-43785"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-43786"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-43787"
    }
  ]
}