Vulnerability Details : CVE-2020-15078
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.
Products affected by CVE-2020-15078
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:21.04:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-15078
2.89%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-15078
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-15078
-
The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.Assigned by: security@openvpn.net (Secondary)
-
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-15078
-
https://usn.ubuntu.com/usn/usn-4933-1
USN-4933-1: OpenVPN vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GJUXEYHUPREEBPX23VPEKMFXUPVO3PMU/
[SECURITY] Fedora 33 Update: openvpn-2.4.11-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements
Just a moment...Broken Link
-
https://community.openvpn.net/openvpn/wiki/CVE-2020-15078
Just a moment...Patch;Vendor Advisory
-
https://security.gentoo.org/glsa/202105-25
OpenVPN: Authentication bypass (GLSA 202105-25) — Gentoo securityThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JGEGLC4YGBDN5CGHTNWN2GH6DJJA36T2/
[SECURITY] Fedora 32 Update: openvpn-2.4.11-1.fc32 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html
[SECURITY] [DLA 2992-1] openvpn security updateMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PLDB3OBQ3AODYYRN7NRCABV6I4AUFAT6/
[SECURITY] Fedora 34 Update: openvpn-2.5.2-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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