Use Gem::Version to compare versions in check

Author: jhart-r7

modules/exploits/unix/webapp/actualanalyzer_ant_cookie_exec.rb

@@ -80,7 +80,7 @@ def check
     elsif res.code == 200 && res.body =~ /title="ActualAnalyzer Lite \(free\) ([\d\.]+)"/
       version = $1
       vprint_status("#{peer} - Found version: #{version}")
-      return Exploit::CheckCode::Vulnerable if version =~ /^2\.(81|80|[0-7])/
+      return Exploit::CheckCode::Vulnerable if Gem::Version.new(version) <= Gem::Version.new('2.81')
       return Exploit::CheckCode::Detected
     elsif res.code == 200 && res.body =~ /ActualAnalyzer Lite/
       return Exploit::CheckCode::Detected