CVE-2022-0547
Published: 18 March 2022
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
openvpn
Launchpad, Ubuntu, Debian |
bionic |
Released
(2.4.4-2ubuntu1.7)
|
| focal |
Released
(2.4.7-1ubuntu2.20.04.4)
|
|
| impish |
Released
(2.5.1-3ubuntu1.1)
|
|
| jammy |
Released
(2.5.5-1ubuntu3)
|
|
| kinetic |
Released
(2.5.5-1ubuntu3)
|
|
| lunar |
Released
(2.5.5-1ubuntu3)
|
|
| mantic |
Released
(2.5.5-1ubuntu3)
|
|
| noble |
Released
(2.5.5-1ubuntu3)
|
|
| trusty |
Released
(2.3.2-7ubuntu3.2+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(2.5.6-1)
|
|
| xenial |
Released
(2.3.10-1ubuntu2.2+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches:
upstream: https://github.com/OpenVPN/openvpn/commit/58ec3bb4aac77131118dbbc39a65181e7847adee upstream: https://github.com/OpenVPN/openvpn/commit/af3e382649d96ae77cc5e42be8270f355e5cfec5 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |