CVE-2019-9495
Published: 10 April 2019
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.
Priority
Status
Package | Release | Status |
---|---|---|
wpa Launchpad, Ubuntu, Debian |
bionic |
Released
(2:2.6-15ubuntu2.2)
|
cosmic |
Released
(2:2.6-18ubuntu1.1)
|
|
disco |
Released
(2:2.6-21ubuntu3)
|
|
trusty |
Released
(2.1-0ubuntu1.7)
|
|
upstream |
Released
(2.8)
|
|
xenial |
Released
(2.4-0ubuntu6.4)
|
|
wpasupplicant Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
cosmic |
Does not exist
|
|
disco |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 3.7 |
Attack vector | Network |
Attack complexity | High |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | Low |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |