Vulnerability CVE-2021-3547


Published: 2021-07-12

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.

Type:

CWE-287

(Improper Authentication)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5.8/10
4.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Openvpn -> Openvpn 

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

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