CVE-2021-3336

CVSS V2 Medium 6.8 CVSS V3 High 8.1

Description

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.

Overview

CVE ID
CVE-2021-3336

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2021-01-29T05:15:12

Last Modified Date
2021-03-04T21:20:45

Weakness Enumerations

CWE	URL
CWE-295	http://cwe.mitre.org/data/definitions/295.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:wolfssl:wolfssl::::::::	1	OR		4.7.0

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
6.8

Severity
MEDIUM

Exploitability Score
8.6

Impact Score
6.4

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK

Attack Compatibility
HIGH

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
8.1

Base Severity
HIGH

Exploitability Score
2.2

Impact Score
5.9

References

Reference URL	Reference Tags
https://github.com/wolfSSL/wolfssl/pull/3676	Patch Third Party Advisory
https://www.wolfssl.com/docs/security-vulnerabilities	Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-3336
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3336

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:20:56				Added to TrackCVE
2022-12-05 21:04:26	2021-01-29T05:15Z	2021-01-29T05:15:12	CVE Published Date	updated
2022-12-05 21:04:26		2021-03-04T21:20:45	CVE Modified Date	updated
2022-12-05 21:04:26		Analyzed	Vulnerability Status	updated