CVE-2021-3547

high

Description

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.

References

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

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

Details

Source: Mitre, NVD

Published: 2021-07-12

Updated: 2022-10-27

Risk Information

CVSS v2

Base Score: 5.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 7.4

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: High

EPSS

EPSS: 0.00052