FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

openvpn -- Potential authentication by-pass with multiple deferred authentication plug-ins

Affected packages
	openvpn	<	2.5.6
	openvpn-mbedtls	<	2.5.6

Details

VuXML ID	45a72180-a640-11ec-a08b-85298243e224
Discovery	2022-03-10
Entry	2022-03-17

David Sommerseth reports:

OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials. This issue is resolved in OpenVPN 2.4.12 and v2.5.6.

[source]

References

CVE Name	CVE-2022-0547
URL	https://community.openvpn.net/openvpn/wiki/CVE-2022-0547
URL	https://github.com/OpenVPN/openvpn/blob/release/2.5/Changes.rst#overview-of-changes-in-256