CVE-2019-5477

A command injection vulnerability in Nokogiri v1.10.3 and earlier allows
commands to be executed in a subprocess via Ruby’s Kernel.open method.
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 versions v1.0.6 and earlier. Rexical is used by Nokogiri to
generate lexical scanner code for parsing CSS queries. The underlying
vulnerability was addressed in Rexical v1.0.7 and Nokogiri upgraded to this
version of Rexical in Nokogiri v1.10.4.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=934802&gt;