{"id":"USN-5193-3","summary":"xorg-server-hwe-16.04 vulnerabilities","details":"USN-5193-1 fixed several vulnerabilities in X.Org. This update provides\nthe corresponding update for Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled\n certain inputs. An attacker could use this issue to cause the server to\n crash, resulting in a denial of service, or possibly execute arbitrary\n code and escalate privileges.\n","modified":"2026-02-10T04:42:24Z","published":"2023-07-27T09:41:00Z","related":["UBUNTU-CVE-2021-4008","UBUNTU-CVE-2021-4009","UBUNTU-CVE-2021-4011"],"upstream":["CVE-2021-4008","CVE-2021-4009","CVE-2021-4011","UBUNTU-CVE-2021-4008","UBUNTU-CVE-2021-4009","UBUNTU-CVE-2021-4011"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5193-3"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4008"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4009"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4011"}],"affected":[{"package":{"name":"xorg-server-hwe-16.04","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/xorg-server-hwe-16.04@2:1.19.6-1ubuntu4.1~16.04.6+esm5?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.19.6-1ubuntu4.1~16.04.6+esm5"}]}],"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","2:1.19.3-1ubuntu1~16.04.4","2:1.19.5-0ubuntu2~16.04.1","2:1.19.6-1ubuntu4~16.04.1","2:1.19.6-1ubuntu4.1~16.04.1","2:1.19.6-1ubuntu4.1~16.04.2","2:1.19.6-1ubuntu4.1~16.04.3","2:1.19.6-1ubuntu4.1~16.04.4","2:1.19.6-1ubuntu4.1~16.04.5","2:1.19.6-1ubuntu4.1~16.04.6","2:1.19.6-1ubuntu4.1~16.04.6+esm1","2:1.19.6-1ubuntu4.1~16.04.6+esm3","2:1.19.6-1ubuntu4.1~16.04.6+esm4"],"ecosystem_specific":{"binaries":[{"binary_version":"2:1.19.6-1ubuntu4.1~16.04.6+esm5","binary_name":"xmir-hwe-16.04"},{"binary_version":"2:1.19.6-1ubuntu4.1~16.04.6+esm5","binary_name":"xorg-server-source-hwe-16.04"},{"binary_version":"2:1.19.6-1ubuntu4.1~16.04.6+esm5","binary_name":"xserver-xephyr-hwe-16.04"},{"binary_version":"2:1.19.6-1ubuntu4.1~16.04.6+esm5","binary_name":"xserver-xorg-core-hwe-16.04"},{"binary_version":"2:1.19.6-1ubuntu4.1~16.04.6+esm5","binary_name":"xserver-xorg-dev-hwe-16.04"},{"binary_version":"2:1.19.6-1ubuntu4.1~16.04.6+esm5","binary_name":"xserver-xorg-legacy-hwe-16.04"},{"binary_version":"2:1.19.6-1ubuntu4.1~16.04.6+esm5","binary_name":"xwayland-hwe-16.04"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"severity":[{"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"}],"id":"CVE-2021-4008"},{"severity":[{"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"}],"id":"CVE-2021-4009"},{"severity":[{"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"}],"id":"CVE-2021-4011"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5193-3.json"}}],"schema_version":"1.7.3"}