CVE-2020-15078
HIGHOpenVPN < 2.4.11 - Authentication Bypass via Deferred Authentication
Title source: llmDescription
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)
Core 8
Core References
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GJUXEYHUPREEBPX23VPEKMFXUPVO3PMU/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PLDB3OBQ3AODYYRN7NRCABV6I4AUFAT6/
Patch, Vendor Advisory x_refsource_misc
https://community.openvpn.net/openvpn/wiki/CVE-2020-15078
Broken Link x_refsource_misc
https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JGEGLC4YGBDN5CGHTNWN2GH6DJJA36T2/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202105-25
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/usn/usn-4933-1
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html
Scores
CVSS v3
7.5
EPSS
0.0511
EPSS Percentile
91.3%
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