CVE Vulnerabilities

CVE-2021-3336

Improper Certificate Validation

Published: Jan 29, 2021 | Modified: Nov 21, 2024
CVSS 3.x
8.1
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
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DoTls13CertificateVerify in tls13.c in wolfSSL before 4.7.0 does not cease processing for certain anomalous peer behavior (sending an ED22519, ED448, ECC, or RSA signature without the corresponding certificate). The client side is affected because man-in-the-middle attackers can impersonate TLS 1.3 servers.

Weakness

The product does not validate, or incorrectly validates, a certificate.

Affected Software

NameVendorStart VersionEnd Version
WolfsslWolfssl*4.7.0 (excluding)
WolfsslUbuntubionic*
WolfsslUbuntudevel*
WolfsslUbuntuesm-apps/bionic*
WolfsslUbuntuesm-apps/focal*
WolfsslUbuntuesm-apps/jammy*
WolfsslUbuntuesm-apps/noble*
WolfsslUbuntuesm-apps/xenial*
WolfsslUbuntufocal*
WolfsslUbuntugroovy*
WolfsslUbuntuhirsute*
WolfsslUbuntuimpish*
WolfsslUbuntujammy*
WolfsslUbuntukinetic*
WolfsslUbuntulunar*
WolfsslUbuntumantic*
WolfsslUbuntunoble*
WolfsslUbuntuoracular*
WolfsslUbuntuplucky*
WolfsslUbuntuquesting*
WolfsslUbuntutrusty*
WolfsslUbuntuxenial*

Potential Mitigations

References