Ran into the same problem. The service never recovers after this error, because the package is not shipped with a systemd unit, but with an old /etc/init.d/stunnel4 script.
I ended up uninstalling the Ubuntu version, compling 5.60 (latest at the time) from source and then running it with a makeshift systemd service (available at https://gist.github.com/Jalle19/60532513bbcec2fa630a9d8b576d91e3). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1847275 Title: stunnel4: "INTERNAL ERROR: Bad magic at ssl.c, line 117" - DoS vulnerability To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/stunnel4/+bug/1847275/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
