CVE-2021-40818

EUVD-2021-27982
scheme/webauthn.c in Glewlwyd SSO server through 2.5.3 has a buffer overflow during FIDO2 signature validation in webauthn registration.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 63%
Affected Products (NVD)
VendorProductVersion
glewlwyd_sso_server_projectglewlwyd_sso_server
𝑥
≤ 2.5.3
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
glewlwyd
bookworm
2.7.5-3+deb12u1
fixed
bullseye
2.5.2-2+deb11u3
fixed
buster
not-affected
sid
2.7.6+ds-2
fixed
trixie
2.7.6+ds-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
glewlwyd
bionic
needs-triage
focal
needs-triage
hirsute
ignored
impish
ignored
jammy
needs-triage
kinetic
ignored
lunar
not-affected
mantic
not-affected
noble
not-affected
trusty
dne
xenial
ignored