A ruby-zip security update has been released for Debian GNU/Linux 9 LTS to fix a Directory Traversal vulnerability in Zip::File component.
DLA 2307-1: ruby-zip security update
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Debian LTS Advisory DLA-2307-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Utkarsh Gupta
August 02, 2020 https://wiki.debian.org/LTS
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Package : ruby-zip
Version : 1.2.0-1.1+deb9u1
CVE ID : CVE-2018-1000544
Debian Bug : 902720
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/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
