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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

Medium

Cvss 3 Severity Score

3.7

Score breakdown

Status

Package Release Status
wpa
Launchpad, Ubuntu, Debian
upstream
Released (2.8)
trusty
Released (2.1-0ubuntu1.7)
xenial
Released (2.4-0ubuntu6.4)
bionic
Released (2:2.6-15ubuntu2.2)
cosmic
Released (2:2.6-18ubuntu1.1)
disco
Released (2:2.6-21ubuntu3)
wpasupplicant
Launchpad, Ubuntu, Debian
upstream Needs triage

trusty Does not exist

xenial Does not exist

bionic Does not exist

cosmic Does not exist

disco 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