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9.8
CVSSv3

CVE-2022-0547

Published: 18/03/2022 Updated: 07/11/2023
CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10
CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9
VMScore: 668
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
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Vulnerability Summary

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.

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openvpn openvpn

fedoraproject fedora 34

fedoraproject fedora 36

debian debian linux 9.0

Vendor Advisories

Debian CVElist Bug Report Logs: openvpn: CVE-2022-0547: authentication bypass in external authentication plug-ins
Debian Bug report logs - #1008015 openvpn: CVE-2022-0547: authentication bypass in external authentication plug-ins Package: openvpn; Maintainer for openvpn is Bernhard Schmidt <berni@debianorg>; Source for openvpn is src:openvpn (PTS, buildd, popcon) Reported by: Markus Koschany <apo@debianorg> Date: Sun, 20 Mar 2 ...
Amazon Linux AMI: ALAS-2023-1719
OpenVPN 21 until v2412 and v256 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 (CVE-2022-0547) ...

References

CWE-287https://openvpn.net/community-downloads/https://community.openvpn.net/openvpn/wiki/SecurityAnnouncementshttps://community.openvpn.net/openvpn/wiki/CVE-2022-0547https://lists.debian.org/debian-lts-announce/2022/05/msg00002.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1008015https://nvd.nist.govhttps://alas.aws.amazon.com/ALAS-2023-1719.html
CVSSv3
CVSSv2
CVSSv3
VMScore
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