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CVE-2019-9494

Published: 10 April 2019

The implementations of SAE in hostapd and wpa_supplicant are vulnerable to side channel attacks as a result of observable timing differences and cache access patterns. An attacker may be able to gain leaked information from a side channel attack that can be used for full password recovery. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.7 are affected.

Notes

AuthorNote
mdeslaur
SAE support not built in Ubuntu

Priority

Medium

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
wpa
Launchpad, Ubuntu, Debian
upstream
Released (2.8)
trusty Not vulnerable
(code not built)
xenial Not vulnerable
(code not built)
bionic Not vulnerable
(code not built)
cosmic Not vulnerable
(code not built)
wpasupplicant
Launchpad, Ubuntu, Debian
upstream Needs triage

trusty Does not exist

xenial Does not exist

bionic Does not exist

cosmic Does not exist

Severity score breakdown

Parameter Value
Base score 5.9
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N