{"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":"2026-02-10T04:41:13Z","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":{"binaries":[{"binary_version":"2:1.15.1-0ubuntu2.11","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_name":"xserver-xephyr"},{"binary_version":"2:1.15.1-0ubuntu2.11","binary_name":"xserver-xorg-core"},{"binary_version":"2:1.15.1-0ubuntu2.11","binary_name":"xserver-xorg-dev"},{"binary_version":"2:1.15.1-0ubuntu2.11","binary_name":"xserver-xorg-xmir"},{"binary_version":"2:1.15.1-0ubuntu2.11","binary_name":"xvfb"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:14.04:LTS","cves":[{"id":"CVE-2017-12176","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12177","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12178","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12179","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12180","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12181","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12182","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12183","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12184","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12185","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12186","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12187","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"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":{"binaries":[{"binary_version":"2:1.18.3-1ubuntu2.3~trusty4","binary_name":"xorg-server-source-lts-xenial"},{"binary_version":"2:1.18.3-1ubuntu2.3~trusty4","binary_name":"xserver-xephyr-lts-xenial"},{"binary_version":"2:1.18.3-1ubuntu2.3~trusty4","binary_name":"xserver-xorg-core-lts-xenial"},{"binary_version":"2:1.18.3-1ubuntu2.3~trusty4","binary_name":"xserver-xorg-dev-lts-xenial"},{"binary_version":"2:1.18.3-1ubuntu2.3~trusty4","binary_name":"xwayland-lts-xenial"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:14.04:LTS","cves":[{"id":"CVE-2017-12176","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12177","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12178","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12179","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12180","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12181","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12182","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12183","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12184","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12185","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12186","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12187","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3456-1.json"}},{"package":{"name":"xorg-server","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/xorg-server@2:1.18.4-0ubuntu0.7?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.18.4-0ubuntu0.7"}]}],"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","2:1.18.4-0ubuntu0.6"],"ecosystem_specific":{"binaries":[{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xdmx"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xdmx-tools"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xmir"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xnest"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xorg-server-source"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xserver-common"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xserver-xephyr"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xserver-xorg-core"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xserver-xorg-dev"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xserver-xorg-legacy"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xserver-xorg-xmir"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xvfb"},{"binary_version":"2:1.18.4-0ubuntu0.7","binary_name":"xwayland"}],"availability":"No 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required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[{"id":"CVE-2017-12176","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12177","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12178","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12179","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12180","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12181","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12182","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12183","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12184","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12185","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12186","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12187","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3456-1.json"}},{"package":{"name":"xorg-server-hwe-16.04","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/xorg-server-hwe-16.04@2:1.19.3-1ubuntu1~16.04.4?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.19.3-1ubuntu1~16.04.4"}]}],"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","2:1.19.3-1ubuntu1~16.04.3"],"ecosystem_specific":{"binaries":[{"binary_version":"2:1.19.3-1ubuntu1~16.04.4","binary_name":"xmir-hwe-16.04"},{"binary_version":"2:1.19.3-1ubuntu1~16.04.4","binary_name":"xorg-server-source-hwe-16.04"},{"binary_version":"2:1.19.3-1ubuntu1~16.04.4","binary_name":"xserver-xephyr-hwe-16.04"},{"binary_version":"2:1.19.3-1ubuntu1~16.04.4","binary_name":"xserver-xorg-core-hwe-16.04"},{"binary_version":"2:1.19.3-1ubuntu1~16.04.4","binary_name":"xserver-xorg-dev-hwe-16.04"},{"binary_version":"2:1.19.3-1ubuntu1~16.04.4","binary_name":"xserver-xorg-legacy-hwe-16.04"},{"binary_version":"2:1.19.3-1ubuntu1~16.04.4","binary_name":"xwayland-hwe-16.04"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[{"id":"CVE-2017-12176","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12177","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12178","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12179","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12180","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12181","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12182","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12183","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12184","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12185","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12186","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2017-12187","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3456-1.json"}}],"schema_version":"1.7.3"}