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CVE-2019-13377

Published: 8 August 2019

The implementations of SAE and EAP-pwd in hostapd and wpa_supplicant 2.x through 2.8 are vulnerable to side-channel attacks as a result of observable timing differences and cache access patterns when Brainpool curves are used. An attacker may be able to gain leaked information from a side-channel attack that can be used for full password recovery.

Notes

AuthorNote
leosilva
from Debian "bug was added in v2.5"
mdeslaur
SAE is not enabled in Ubuntu builds, some of the patches aren't
required.

Priority

Medium

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
wpa
Launchpad, Ubuntu, Debian
bionic
Released (2:2.6-15ubuntu2.4)
disco
Released (2:2.6-21ubuntu3.2)
trusty Not vulnerable
(code not present)
upstream Needs triage

xenial Not vulnerable
(code not present)
Patches:
upstream: https://w1.fi/security/2019-6/

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