CVE-2020-15078

HIGH

OpenVPN <2.5.1 - Auth Bypass

Title source: llm

Description

OpenVPN 2.5.1 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured with deferred authentication, which can be used to potentially trigger further information leaks.

References (8)

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GJUXEYHUPREEBPX23VPEKMFXUPVO3PMU/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PLDB3OBQ3AODYYRN7NRCABV6I4AUFAT6/

[Patch, Vendor Advisory] https://community.openvpn.net/openvpn/wiki/CVE-2020-15078

[Broken Link] https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JGEGLC4YGBDN5CGHTNWN2GH6DJJA36T2/

[Third Party Advisory] https://security.gentoo.org/glsa/202105-25

[Third Party Advisory] https://usn.ubuntu.com/usn/usn-4933-1

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html

Scores

CVSS v3 7.5

EPSS 0.0033

EPSS Percentile 56.1%

Attack Vector NETWORK

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

Details

CWE

CWE-305 CWE-306

Status published

Products (9)

canonical/ubuntu_linux 18.04

canonical/ubuntu_linux 20.04

canonical/ubuntu_linux 20.10

canonical/ubuntu_linux 21.04

debian/debian_linux 9.0

fedoraproject/fedora 32

fedoraproject/fedora 33

fedoraproject/fedora 34

openvpn/openvpn < 2.4.11

Published Apr 26, 2021

Tracked Since Feb 18, 2026