An issue was discovered in the libsofia-sip fork in drachtio-server before 0.8.20. It allows remote attackers to cause a denial of service (daemon crash) via a crafted UDP message that leads to a failure of the libsofia-sip-ua/tport/tport.c self assertion.
https://www.debian.org/security/2023/dsa-5410
https://lists.debian.org/debian-lts-announce/2023/02/msg00028.html
https://github.com/drachtio/drachtio-server/issues/244
https://github.com/davehorton/sofia-sip/commit/13b2a135287caa2d67ac6cd5155626821e25b377