CVE-2022-0547: Critical severity OpenVPN OpenVPN vulnerability

Published Mar 18, 2022
·
Updated

Last updated 24 July 2024

Other sources

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.

Affected Software

22 affected componentsFixes available
OpenVPN OpenVPN>=2.1.0<2.4.12
OpenVPN OpenVPN>=2.5.0<2.5.6
Fedoraproject Fedora=34
Fedoraproject Fedora=36
Debian Debian Linux=9.0
debian/openvpn<2.5.6-1
2.5.6-1
debian/openvpn<2.5.6-1
2.5.6-1
debian/openvpn<2.5.6-1
2.5.6-1
debian/openvpn
2.6.14-0+deb12u22.6.14-1+deb13u32.7.8-1
alpine/openvpn>=2.1.0<2.4.12-r0
2.4.12-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0
alpine/openvpn>=2.1.0<2.5.6-r0
2.5.6-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/openvpn to a version that resolves this vulnerability.

    Fixed in 2.6.14-0+deb12u2Fixed in 2.6.14-1+deb13u3Fixed in 2.7.8-1
  2. Upgrade

    Upgrade alpine/openvpn to a version that resolves this vulnerability.

    Fixed in 2.4.12-r0
  3. Upgrade

    Upgrade alpine/openvpn to a version that resolves this vulnerability.

    Fixed in 2.5.6-r0
  4. Upgrade

    Upgrade debian/openvpn to a version that resolves this vulnerability.

    Fixed in 2.5.6-1
  5. Upgrade

    Upgrade OpenVPN to a version that resolves this vulnerability.

    Fixed in 2.4.12
  6. Upgrade

    Upgrade OpenVPN to a version that resolves this vulnerability.

    Fixed in 2.5.6

Event History

Mar 18, 2022
CVE Published
via MITRE·06:00 PM
Data Sourced
via MITRE·06:00 PM
DescriptionWeakness
Data Sourced
via NVD·06:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·06:15 PM
DescriptionSeverityAffected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2022-0547?

The severity of CVE-2022-0547 is critical.

2

What is the impact of CVE-2022-0547?

CVE-2022-0547 enables authentication bypass in OpenVPN plug-ins, allowing external users to gain access with partially correct credentials.

3

Which versions of OpenVPN are affected by CVE-2022-0547?

OpenVPN versions 2.1 until v2.4.12 and v2.5.6 are affected by CVE-2022-0547.

4

How can I fix CVE-2022-0547?

Update OpenVPN to a version newer than v2.4.12 or v2.5.6 to fix CVE-2022-0547.

5

Where can I find more information about CVE-2022-0547?

For more information about CVE-2022-0547, you can refer to the OpenVPN community website and the Debian security announcements.

Company

Resources

Contact

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