USN-3453-1 (UBUNTU-CVE-2017-13721)

Vulnerability from osv_ubuntu – Published: 2017-10-12 14:32 – Updated: 2026-04-22 07:36 – Source website
VLAI
Summary
xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities
Details

Michal Srb discovered that the X.Org X server incorrectly handled shared memory segments. An attacker able to connect to an X server, either locally or remotely, could use this issue to crash the server, or possibly replace shared memory segments of other X clients in the same session. (CVE-2017-13721)

Michal Srb discovered that the X.Org X server incorrectly handled XKB buffers. An attacker able to connect to an X server, either locally or remotely, could use this issue to crash the server, or possibly execute arbitrary code. (CVE-2017-13723)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2017-13721",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2017-13723",
              "severity": [
                {
                  "score": "CVSS:3.0/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:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "xdmx",
            "binary_version": "2:1.15.1-0ubuntu2.10"
          },
          {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.15.1-0ubuntu2.10"
          },
          {
            "binary_name": "xnest",
            "binary_version": "2:1.15.1-0ubuntu2.10"
          },
          {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.15.1-0ubuntu2.10"
          },
          {
            "binary_name": "xserver-common",
            "binary_version": "2:1.15.1-0ubuntu2.10"
          },
          {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.15.1-0ubuntu2.10"
          },
          {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.15.1-0ubuntu2.10"
          },
          {
            "binary_name": "xserver-xorg-xmir",
            "binary_version": "2:1.15.1-0ubuntu2.10"
          },
          {
            "binary_name": "xvfb",
            "binary_version": "2:1.15.1-0ubuntu2.10"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "xorg-server",
        "purl": "pkg:deb/ubuntu/xorg-server@2:1.15.1-0ubuntu2.10?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.15.1-0ubuntu2.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "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"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2017-13721",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2017-13723",
              "severity": [
                {
                  "score": "CVSS:3.0/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:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "xorg-server-source-lts-xenial",
            "binary_version": "2:1.18.3-1ubuntu2.3~trusty3"
          },
          {
            "binary_name": "xserver-xephyr-lts-xenial",
            "binary_version": "2:1.18.3-1ubuntu2.3~trusty3"
          },
          {
            "binary_name": "xserver-xorg-core-lts-xenial",
            "binary_version": "2:1.18.3-1ubuntu2.3~trusty3"
          },
          {
            "binary_name": "xserver-xorg-dev-lts-xenial",
            "binary_version": "2:1.18.3-1ubuntu2.3~trusty3"
          },
          {
            "binary_name": "xwayland-lts-xenial",
            "binary_version": "2:1.18.3-1ubuntu2.3~trusty3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "xorg-server-lts-xenial",
        "purl": "pkg:deb/ubuntu/xorg-server-lts-xenial@2:1.18.3-1ubuntu2.3~trusty3?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.18.3-1ubuntu2.3~trusty3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.18.3-1ubuntu2.2~trusty1",
        "2:1.18.3-1ubuntu2.2~trusty2",
        "2:1.18.3-1ubuntu2.2~trusty3",
        "2:1.18.3-1ubuntu2.3~trusty1",
        "2:1.18.3-1ubuntu2.3~trusty2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2017-13721",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2017-13723",
              "severity": [
                {
                  "score": "CVSS:3.0/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": "2:1.18.4-0ubuntu0.6"
          },
          {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.18.4-0ubuntu0.6"
          },
          {
            "binary_name": "xmir",
            "binary_version": "2:1.18.4-0ubuntu0.6"
          },
          {
            "binary_name": "xnest",
            "binary_version": "2:1.18.4-0ubuntu0.6"
          },
          {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.18.4-0ubuntu0.6"
          },
          {
            "binary_name": "xserver-common",
            "binary_version": "2:1.18.4-0ubuntu0.6"
          },
          {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.18.4-0ubuntu0.6"
          },
          {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.18.4-0ubuntu0.6"
          },
          {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:1.18.4-0ubuntu0.6"
          },
          {
            "binary_name": "xserver-xorg-xmir",
            "binary_version": "2:1.18.4-0ubuntu0.6"
          },
          {
            "binary_name": "xvfb",
            "binary_version": "2:1.18.4-0ubuntu0.6"
          },
          {
            "binary_name": "xwayland",
            "binary_version": "2:1.18.4-0ubuntu0.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "xorg-server",
        "purl": "pkg:deb/ubuntu/xorg-server@2:1.18.4-0ubuntu0.6?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.18.4-0ubuntu0.6"
            }
          ],
          "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"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2017-13721",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2017-13723",
              "severity": [
                {
                  "score": "CVSS:3.0/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": "2:1.19.3-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "xorg-server-source-hwe-16.04",
            "binary_version": "2:1.19.3-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "xserver-xephyr-hwe-16.04",
            "binary_version": "2:1.19.3-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "xserver-xorg-core-hwe-16.04",
            "binary_version": "2:1.19.3-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "xserver-xorg-dev-hwe-16.04",
            "binary_version": "2:1.19.3-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "xserver-xorg-legacy-hwe-16.04",
            "binary_version": "2:1.19.3-1ubuntu1~16.04.3"
          },
          {
            "binary_name": "xwayland-hwe-16.04",
            "binary_version": "2:1.19.3-1ubuntu1~16.04.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "xorg-server-hwe-16.04",
        "purl": "pkg:deb/ubuntu/xorg-server-hwe-16.04@2:1.19.3-1ubuntu1~16.04.3?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.19.3-1ubuntu1~16.04.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.18.4-1ubuntu6.1~16.04.1",
        "2:1.18.4-1ubuntu6.1~16.04.2",
        "2:1.19.3-1ubuntu1~16.04.2"
      ]
    }
  ],
  "aliases": [],
  "details": "Michal Srb discovered that the X.Org X server incorrectly handled shared\nmemory segments. An attacker able to connect to an X server, either locally\nor remotely, could use this issue to crash the server, or possibly replace\nshared memory segments of other X clients in the same session.\n(CVE-2017-13721)\n\nMichal Srb discovered that the X.Org X server incorrectly handled XKB\nbuffers. An attacker able to connect to an X server, either locally or\nremotely, could use this issue to crash the server, or possibly execute\narbitrary code. (CVE-2017-13723)\n",
  "id": "USN-3453-1",
  "modified": "2026-04-22T07:36:34Z",
  "published": "2017-10-12T14:32:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3453-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-13721"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-13723"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2017-13721",
    "UBUNTU-CVE-2017-13723"
  ]
}



Log in or create an account to share your comment.




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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.