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Rex::Version crashes in some local modules with Amazon Linux 2 kernel versions #19812

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h00die opened this issue Jan 17, 2025 · 0 comments · May be fixed by #19813
Open

Rex::Version crashes in some local modules with Amazon Linux 2 kernel versions #19812

h00die opened this issue Jan 17, 2025 · 0 comments · May be fixed by #19813
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@h00die
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h00die commented Jan 17, 2025

Placeholder to link fixing several modules.

Several modules (a bunch written by me) use the following logic:

release = kernel_release
Rex::Version.new(release)

This works great on most Ubuntu systems, Fedora, etc. However, Amazon Linux 2 has kernel versions like 5.4.129-72.229.amzn2int.x86_64 (ref)

>> Rex::Version.new('5.4.129-72.229.amzn2int.x86_64')
/usr/lib/ruby/vendor_ruby/rubygems/version.rb:223:in `initialize': Malformed version number string 5.4.129-72.229.amzn2int.x86_64 (ArgumentError)

So we'll need to do better about guarding like so:

require 'rex/version'

begin
  Rex::Version.new('5.4.129-72.229.amzn2int.x86_64')
rescue ArgumentError => e
  puts "Error reading invalid version: #{e}"
end
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guard Rex::Version.new against crashes on local modules h00die/metasploit-framework
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