CVE-2016-6329

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)	bullseye	2.5.1-3	vulnerable
	bookworm, bookworm (security)	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

https://community.openvpn.net/openvpn/wiki/SWEET32
This is a generic cryptographic weakness, not a vulnerability in OpenVPN per se