{"id":"UBUNTU-CVE-2019-9495","details":"The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of cache access patterns. All versions of hostapd and wpa_supplicant with EAP-PWD support are vulnerable. The ability to install and execute applications is necessary for a successful attack. Memory access patterns are visible in a shared cache. Weak passwords may be cracked. Versions of hostapd/wpa_supplicant 2.7 and newer, are not vulnerable to the timing attack described in CVE-2019-9494. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.","modified":"2026-01-30T00:46:57.160376Z","published":"2019-04-10T15:00:00Z","related":["USN-3944-1"],"upstream":["CVE-2019-9495"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-9495"},{"type":"REPORT","url":"https://w1.fi/security/2019-2/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3944-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-9495"}],"affected":[{"package":{"name":"wpa","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/wpa@2.1-0ubuntu1.7?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1-0ubuntu1.7"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_version":"1:2.1-0ubuntu1.7","binary_name":"hostapd"},{"binary_version":"2.1-0ubuntu1.7","binary_name":"wpagui"},{"binary_version":"2.1-0ubuntu1.7","binary_name":"wpasupplicant"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-9495.json"}},{"package":{"name":"wpa","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/wpa@2.4-0ubuntu6.4?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4-0ubuntu6.4"}]}],"versions":["2.4-0ubuntu3","2.4-0ubuntu4","2.4-0ubuntu5","2.4-0ubuntu6","2.4-0ubuntu6.2","2.4-0ubuntu6.3"],"ecosystem_specific":{"binaries":[{"binary_version":"1:2.4-0ubuntu6.4","binary_name":"hostapd"},{"binary_version":"2.4-0ubuntu6.4","binary_name":"wpagui"},{"binary_version":"2.4-0ubuntu6.4","binary_name":"wpasupplicant"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-9495.json"}},{"package":{"name":"wpa","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/wpa@2:2.6-15ubuntu2.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.6-15ubuntu2.2"}]}],"versions":["2.4-0ubuntu10","2:2.4-1.1ubuntu1","2:2.6-15ubuntu1","2:2.6-15ubuntu2","2:2.6-15ubuntu2.1"],"ecosystem_specific":{"binaries":[{"binary_version":"2:2.6-15ubuntu2.2","binary_name":"hostapd"},{"binary_version":"2:2.6-15ubuntu2.2","binary_name":"wpagui"},{"binary_version":"2:2.6-15ubuntu2.2","binary_name":"wpasupplicant"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-9495.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}