| Name | CVE-2022-0547 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DLA-2992-1 |
| Debian Bugs | 1008015 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| openvpn (PTS) | stretch | 2.4.0-6+deb9u3 | vulnerable |
| stretch (security) | 2.4.0-6+deb9u4 | fixed | |
| buster | 2.4.7-1+deb10u1 | vulnerable | |
| bullseye | 2.5.1-3 | vulnerable | |
| bookworm | 2.5.6-1 | fixed | |
| sid | 2.6.0~git20220518+dco-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| openvpn | source | stretch | 2.4.0-6+deb9u4 | DLA-2992-1 | ||
| openvpn | source | (unstable) | 2.5.6-1 | 1008015 |
[bullseye] - openvpn <no-dsa> (Minor issue)
[buster] - openvpn <no-dsa> (Minor issue)
https://community.openvpn.net/openvpn/wiki/CVE-2022-0547
https://github.com/OpenVPN/openvpn/commit/58ec3bb4aac77131118dbbc39a65181e7847adee (v2.4.12)
https://github.com/OpenVPN/openvpn/commit/af3e382649d96ae77cc5e42be8270f355e5cfec5 (v2.5.6)