| Name | CVE-2017-7522 |
| Description | OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificate with an embedded NULL character. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| openvpn (PTS) | jessie, jessie (lts) | 2.3.4-5+deb8u3 | fixed |
| stretch (security), stretch (lts), stretch | 2.4.0-6+deb9u4 | vulnerable |
| buster | 2.4.7-1+deb10u1 | fixed |
| bullseye | 2.5.1-3 | fixed |
| bookworm (security), bookworm | 2.6.3-1+deb12u2 | fixed |
| sid, trixie | 2.6.12-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| openvpn | source | wheezy | (not affected) | | | |
| openvpn | source | jessie | (not affected) | | | |
| openvpn | source | (unstable) | 2.4.3-1 | unimportant | | |
Notes
[jessie] - openvpn <not-affected> (x509-track implemented in 2.4.0)
[wheezy] - openvpn <not-affected> (x509-track implemented in 2.4.0)
Fixed by: https://github.com/OpenVPN/openvpn/commit/426392940c
https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243
https://www.openwall.com/lists/oss-security/2017/06/21/6
In Debian openvpn is compiled against OpenSSL, thus even affected
code present.