This security advisory came out recently:
https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243
It is fixed in 2.4.3 and 2.3.17. Unfortunately, Raspbian Jessie (based on Debian Jessie) only includes a much older 2.3.x version. Further, the Raspberry Pi uses an ARM CPU. I could not find any recent Openvpn binary packages for this platform.
I would like to build my own package. I've built tons of RPMs from source, but DEBs not so much. Could someone provide a brief tutorial for building the latest binary deb on ARM? Ideally I'd like to use the same process that's used to build the packages provided on build.openvpn.net