9.8
CRITICAL
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 :

Nov. 7, 2023, 3:41 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
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.

ID Vendor Product Action
1 Fedoraproject fedora
1 Debian debian_linux
1 Openvpn openvpn

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 [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]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.89 }} 0.12%

score

0.82965

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability