The File_read_line function in epan/wslua/wslua_file.c in Wireshark through 2.2.11 does not properly strip '\n' characters, which allows remote attackers to cause a denial of service (buffer underflow and application crash) via a crafted packet that triggers the attempted processing of an empty line.
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html
https://code.wireshark.org/review/#/c/24997/