Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2021-40818

Published: 8 September 2021

scheme/webauthn.c in Glewlwyd SSO server through 2.5.3 has a buffer overflow during FIDO2 signature validation in webauthn registration.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
glewlwyd
Launchpad, Ubuntu, Debian
impish Ignored
(end of life)
bionic Needs triage

trusty Does not exist

xenial Ignored
(end of standard support)
focal Needs triage

upstream
Released (2.5.2-3)
hirsute Ignored
(end of life)
kinetic Ignored
(end of life, was needs-triage)
jammy Needs triage

lunar Not vulnerable
(2.7.1-1ubuntu1)
mantic Not vulnerable
(2.7.1-1ubuntu1)

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H