In ZZIPlib 0.13.68, there is an uncontrolled memory allocation and a crash in the __zzip_parse_root_directory function of zzip/zip.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.
https://usn.ubuntu.com/3699-1/
https://lists.debian.org/debian-lts-announce/2020/06/msg00029.html
https://lists.debian.org/debian-lts-announce/2018/02/msg00022.html