{"id":"UBUNTU-CVE-2019-16275","details":"hostapd before 2.10 and wpa_supplicant before 2.10 allow an incorrect indication of disconnection in certain situations because source address validation is mishandled. This is a denial of service that should have been prevented by PMF (aka management frame protection). The attacker must send a crafted 802.11 frame from a location that is within the 802.11 communications range. An attacker in radio range of the access point could inject a specially constructed unauthenticated IEEE 802.11 frame to the access point to cause associated stations to be disconnected and require a reconnection to the network.","modified":"2026-01-30T00:58:52.112965Z","published":"2019-09-13T00:00:00Z","related":["USN-4136-1","USN-4136-2"],"upstream":["CVE-2019-16275"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-16275"},{"type":"REPORT","url":"https://w1.fi/security/2019-7/ap-mode-pmf-disconnection-protection-bypass.txt"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2019/09/11/7"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4136-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4136-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-16275"}],"affected":[{"package":{"name":"wpa","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/wpa@2.1-0ubuntu1.7+esm2?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1-0ubuntu1.7+esm2"}]}],"versions":["1.0-3ubuntu2","1.0-3ubuntu3","1.0-3ubuntu4","2.1-0ubuntu1","2.1-0ubuntu1.1","2.1-0ubuntu1.2","2.1-0ubuntu1.3","2.1-0ubuntu1.4","2.1-0ubuntu1.5","2.1-0ubuntu1.6","2.1-0ubuntu1.7","2.1-0ubuntu1.7+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"1:2.1-0ubuntu1.7+esm2","binary_name":"hostapd"},{"binary_name":"wpagui","binary_version":"2.1-0ubuntu1.7+esm2"},{"binary_name":"wpasupplicant","binary_version":"2.1-0ubuntu1.7+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-16275.json"}},{"package":{"name":"wpa","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/wpa@2.4-0ubuntu6.6?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4-0ubuntu6.6"}]}],"versions":["2.4-0ubuntu3","2.4-0ubuntu4","2.4-0ubuntu5","2.4-0ubuntu6","2.4-0ubuntu6.2","2.4-0ubuntu6.3","2.4-0ubuntu6.4","2.4-0ubuntu6.5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"hostapd","binary_version":"1:2.4-0ubuntu6.6"},{"binary_name":"wpagui","binary_version":"2.4-0ubuntu6.6"},{"binary_name":"wpasupplicant","binary_version":"2.4-0ubuntu6.6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-16275.json"}},{"package":{"name":"wpa","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/wpa@2:2.6-15ubuntu2.5?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.6-15ubuntu2.5"}]}],"versions":["2.4-0ubuntu10","2:2.4-1.1ubuntu1","2:2.6-15ubuntu1","2:2.6-15ubuntu2","2:2.6-15ubuntu2.1","2:2.6-15ubuntu2.2","2:2.6-15ubuntu2.3","2:2.6-15ubuntu2.4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"hostapd","binary_version":"2:2.6-15ubuntu2.5"},{"binary_name":"wpagui","binary_version":"2:2.6-15ubuntu2.5"},{"binary_name":"wpasupplicant","binary_version":"2:2.6-15ubuntu2.5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-16275.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}