Debian: DLA-2307-1 Critical: rubyzip Arbitrary File Write

rubyzip gem 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..

For Debian 9 stretch, this problem has been fixed in version
1.2.0-1.1+deb9u1.

We recommend that you upgrade your ruby-zip packages.

For the detailed security status of ruby-zip please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/ruby-zip

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


Best,
Utkarsh