A rexical security update has been released for Debian GNU/Linux 10 to address a command injection vulnerability.

DLA 3150-1: rexical security update

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Debian LTS Advisory DLA-3150-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Sylvain Beucler
October 12, 2022   https://wiki.debian.org/LTS
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Package : rexical
Version : 1.0.5-2+deb10u1
CVE ID : CVE-2019-5477
Debian Bug : 940905

A command injection vulnerability was found in Rexical, a lexical
scanner generator for the Ruby programming language. Processes are
vulnerable only if the undocumented method
`Nokogiri::CSS::Tokenizer#load_file` is being called with unsafe user
input as the filename. This vulnerability appears in code generated by
the Rexical gem.

For Debian 10 buster, this problem has been fixed in version
1.0.5-2+deb10u1.

We recommend that you upgrade your rexical packages.

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

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