CVE-2018-1000544
rubyzip gem rubyzip version 1.2.1 and earlier contains a Directory Traversal vulnerability in Zip::File component that can result in write arbitrary files to the filesystem. This attack appear to be exploitable via If a site allows uploading of .zip files , an attacker can upload a malicious file that contains symlinks or files with absolute pathnames "../" to write arbitrary files to the filesystem..
Date published : 2018-06-26
https://github.com/rubyzip/rubyzip/issues/369
https://lists.debian.org/debian-lts-announce/2018/08/msg00013.html