CVE-2022-0547
OpenVPN Authentication Bypass Vulnerability
Description
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.
INFO
Published Date :
March 18, 2022, 6:15 p.m.
Last Modified :
April 23, 2025, 7:15 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2022-0547
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update OpenVPN to a version greater than 2.4.12 or 2.5.6.
- Apply the latest security updates for your operating system.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-0547.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-0547 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-0547
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-0547 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-0547 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 23, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://community.openvpn.net/openvpn/wiki/CVE-2022-0547 Added Reference https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements Added Reference https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/ Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/ Added Reference https://openvpn.net/community-downloads/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference OpenVPN Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/ [No types assigned] Added Reference OpenVPN Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/ [No types assigned] Removed Reference OpenVPN Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/ Removed Reference OpenVPN Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/ -
Modified Analysis by [email protected]
Sep. 09, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 03, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 29, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://community.openvpn.net/openvpn/wiki/CVE-2022-0547 No Types Assigned https://community.openvpn.net/openvpn/wiki/CVE-2022-0547 Vendor Advisory Changed Reference Type https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements No Types Assigned https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements Vendor Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/ Mailing List, Patch, Release Notes, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/ Mailing List, Patch, Release Notes, Third Party Advisory Changed Reference Type https://openvpn.net/community-downloads/ No Types Assigned https://openvpn.net/community-downloads/ Patch, Vendor Advisory Added CWE NIST CWE-287 Added CPE Configuration OR *cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:* versions from (including) 2.1.0 up to (excluding) 2.4.12 *cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:* versions from (including) 2.5.0 up to (excluding) 2.5.6 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 26, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/ [No Types Assigned] -
CVE Modified by [email protected]
Mar. 24, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/ [No Types Assigned]
Vulnerability Scoring Details
Base CVSS Score: 9.8
Base CVSS Score: 7.5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.63 }} -0.09%
score
0.69424
percentile