CServer::SendMsg in engine/server/server.cpp in Teeworlds 0.7.x before 0.7.5 allows remote attackers to shut down the server.
https://www.teeworlds.com/forum/viewtopic.php?id=14785
https://www.debian.org/security/2020/dsa-4763
https://usn.ubuntu.com/4553-1/
https://github.com/teeworlds/teeworlds/commit/c68402fa7e279d42886d5951d1ea8ac2facc1ea5
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00045.html
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00044.html