{"id":"USN-3456-1","summary":"xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities","details":"It was discovered that the X.Org X server incorrectly handled certain\nlengths. An attacker able to connect to an X server, either locally or\nremotely, could use these issues to crash the server, or possibly execute\narbitrary code.\n","modified":"2026-04-22T09:40:23.166945Z","published":"2017-10-17T16:33:35Z","related":["UBUNTU-CVE-2017-12176","UBUNTU-CVE-2017-12177","UBUNTU-CVE-2017-12178","UBUNTU-CVE-2017-12179","UBUNTU-CVE-2017-12180","UBUNTU-CVE-2017-12181","UBUNTU-CVE-2017-12182","UBUNTU-CVE-2017-12183","UBUNTU-CVE-2017-12184","UBUNTU-CVE-2017-12185","UBUNTU-CVE-2017-12186","UBUNTU-CVE-2017-12187"],"upstream":["CVE-2017-12176","CVE-2017-12177","CVE-2017-12178","CVE-2017-12179","CVE-2017-12180","CVE-2017-12181","CVE-2017-12182","CVE-2017-12183","CVE-2017-12184","CVE-2017-12185","CVE-2017-12186","CVE-2017-12187","UBUNTU-CVE-2017-12176","UBUNTU-CVE-2017-12177","UBUNTU-CVE-2017-12178","UBUNTU-CVE-2017-12179","UBUNTU-CVE-2017-12180","UBUNTU-CVE-2017-12181","UBUNTU-CVE-2017-12182","UBUNTU-CVE-2017-12183","UBUNTU-CVE-2017-12184","UBUNTU-CVE-2017-12185","UBUNTU-CVE-2017-12186","UBUNTU-CVE-2017-12187"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3456-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12176"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12177"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12178"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12179"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12180"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12181"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12182"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12183"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12184"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12185"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12186"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-12187"}],"affected":[{"package":{"name":"xorg-server","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/xorg-server@2:1.15.1-0ubuntu2.11?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.15.1-0ubuntu2.11"}]}],"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"],"ecosystem_specific":{"availability":"No 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required","binaries":[{"binary_name":"xdmx","binary_version":"2:1.15.1-0ubuntu2.11"},{"binary_name":"xdmx-tools","binary_version":"2:1.15.1-0ubuntu2.11"},{"binary_name":"xnest","binary_version":"2:1.15.1-0ubuntu2.11"},{"binary_name":"xorg-server-source","binary_version":"2:1.15.1-0ubuntu2.11"},{"binary_name":"xserver-common","binary_version":"2:1.15.1-0ubuntu2.11"},{"binary_version":"2:1.15.1-0ubuntu2.11","binary_name":"xserver-xephyr"},{"binary_name":"xserver-xorg-core","binary_version":"2:1.15.1-0ubuntu2.11"},{"binary_name":"xserver-xorg-xmir","binary_version":"2:1.15.1-0ubuntu2.11"},{"binary_version":"2:1.15.1-0ubuntu2.11","binary_name":"xvfb"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:14.04:LTS","cves":[{"id":"CVE-2017-12176","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2017-12177","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2017-12178","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2017-12179","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2017-12180","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2017-12181","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2017-12182","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2017-12183","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2017-12184","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2017-12185","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2017-12186","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2017-12187","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3456-1.json"}},{"package":{"name":"xorg-server-lts-xenial","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/xorg-server-lts-xenial@2:1.18.3-1ubuntu2.3~trusty4?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.18.3-1ubuntu2.3~trusty4"}]}],"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","2:1.18.3-1ubuntu2.3~trusty3"],"ecosystem_specific":{"availability":"No 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