An unchecked sscanf() call in ettercap before 0.7.5 allows an insecure temporary settings file to overflow a static-sized buffer on the stack.
https://security-tracker.debian.org/tracker/CVE-2010-3844
https://github.com/Ettercap/ettercap/commit/4ef3ede30181eca9add74305ad26dbcb0c3686a0