| Name | CVE-2016-6329 |
| Description | OpenVPN, when using a 64-bit block cipher, makes it easier for remote attackers to obtain cleartext data via a birthday attack against a long-duration encrypted session, as demonstrated by an HTTP-over-OpenVPN session using Blowfish in CBC mode, aka a "Sweet32" attack. |
| 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 | vulnerable |
| stretch (security), stretch (lts), stretch | 2.4.0-6+deb9u4 | vulnerable |
| buster | 2.4.7-1+deb10u1 | vulnerable |
| bullseye | 2.5.1-3 | vulnerable |
| bookworm (security), bookworm | 2.6.3-1+deb12u2 | vulnerable |
| sid, trixie | 2.6.12-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| openvpn | source | (unstable) | (unfixed) | unimportant | | |
Notes
https://community.openvpn.net/openvpn/wiki/SWEET32
This is a generic cryptographic weakness, not a vulnerability in OpenVPN per se