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NVD Vulnerability Details :

CVE-2021-3547

Analyzed

Source-security@openvpn.net

Published At-12 Jul, 2021 | 11:15

Updated At-27 Oct, 2022 | 12:22

OpenVPN 3 Core Library version 3.6 and 3.6.1 allows a man-in-the-middle attacker to bypass the certificate authentication by issuing an unrelated server certificate using the same hostname found in the verify-x509-name option in a client configuration.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Primary	3.1	7.4	HIGH	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Primary	2.0	5.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:N

Type: Primary

Version: 3.1

Base score: 7.4

Base severity: HIGH

Vector:

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

Type: Primary

Version: 2.0

Base score: 5.8

Base severity: MEDIUM

Vector:

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

CPE Matches

openvpn>>openvpn>>3.6

cpe:2.3:a:openvpn:openvpn:3.6:*:*:*:*:*:*:*

openvpn>>openvpn>>3.6.1

cpe:2.3:a:openvpn:openvpn:3.6.1:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-295	Primary	nvd@nist.gov
CWE-305	Secondary	security@openvpn.net

CWE ID: CWE-295

Type: Primary

Source: nvd@nist.gov

CWE ID: CWE-305

Type: Secondary

Source: security@openvpn.net

References

Hyperlink	Source	Resource
https://community.openvpn.net/openvpn/wiki/CVE-2021-3547	security@openvpn.net	Patch Vendor Advisory
https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements	security@openvpn.net	Vendor Advisory

Hyperlink: https://community.openvpn.net/openvpn/wiki/CVE-2021-3547

Source: security@openvpn.net

Resource:

Patch

Vendor Advisory

Hyperlink: https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements

Source: security@openvpn.net

Resource:

Vendor Advisory

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History