Debian LTS DLA-3149-1 Critical: Nokogiri Command Injection & XXE Issues

CVE-2019-5477

A command injection vulnerability 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.

CVE-2020-26247

XXE vulnerability: XML Schemas parsed by Nokogiri::XML::Schema are
trusted by default, allowing external resources to be accessed
over the network, potentially enabling XXE or SSRF attacks. This
behavior is counter to the security policy followed by Nokogiri
maintainers, which is to treat all input as untrusted by default
whenever possible.

CVE-2022-24836

Nokogiri contains an inefficient regular expression that is
susceptible to excessive backtracking when attempting to detect