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modules/auxiliary/scanner/smtp/smtp_enum.rb

Summary

Maintainability
C
1 day
Test Coverage

Method run_host has a Cognitive Complexity of 33 (exceeds 5 allowed). Consider refactoring.
Open

  def run_host(ip)
    users_found = {}
    result = nil # temp for storing result of SMTP request
    code = 0     # status code parsed from result
    vrfy = true  # if vrfy allowed
Severity: Minor
Found in modules/auxiliary/scanner/smtp/smtp_enum.rb - About 4 hrs 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_host has 57 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  def run_host(ip)
    users_found = {}
    result = nil # temp for storing result of SMTP request
    code = 0     # status code parsed from result
    vrfy = true  # if vrfy allowed
Severity: Major
Found in modules/auxiliary/scanner/smtp/smtp_enum.rb - About 2 hrs to fix

    Method do_rcpt_enum has a Cognitive Complexity of 16 (exceeds 5 allowed). Consider refactoring.
    Open

      def do_rcpt_enum(domain, usernames)
    users = []
    usernames.each {|user|
      next if user.downcase == 'root'
      vprint_status("#{rhost}:#{rport} - SMTP - Trying MAIL FROM: root\@#{domain} / RCPT TO: #{user}...")
    Severity: Minor
    Found in modules/auxiliary/scanner/smtp/smtp_enum.rb - About 2 hrs 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 initialize has 33 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      def initialize
    super(
      'Name'        => 'SMTP User Enumeration Utility',
      'Description' => %q{
        The SMTP service has two internal commands that allow the enumeration
    Severity: Minor
    Found in modules/auxiliary/scanner/smtp/smtp_enum.rb - About 1 hr to fix

      Method do_enum has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
      Open

        def do_enum(cmd, usernames)

    users = []
    usernames.each {|user|
      next if user.downcase == 'root'
      Severity: Minor
      Found in modules/auxiliary/scanner/smtp/smtp_enum.rb - About 45 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

      Identical blocks of code found in 2 locations. Consider refactoring.
      Open

            result=''
      code=0
      sock.put("#{data}")
      result=sock.get_once
      result.chomp! if(result)
      Severity: Minor
      Found in modules/auxiliary/scanner/smtp/smtp_enum.rb and 1 other location - About 20 mins to fix
      modules/exploits/unix/smtp/qmail_bash_env_exec.rb on lines 67..73

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 28.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

      Identical blocks of code found in 7 locations. Consider refactoring.
      Open

        def extract_words(wordfile)
    return [] unless wordfile && File.readable?(wordfile)

    begin
      File.readlines(wordfile, chomp: true)
      Severity: Minor
      Found in modules/auxiliary/scanner/smtp/smtp_enum.rb and 6 other locations - About 15 mins to fix
      lib/msf/core/auxiliary/auth_brute.rb on lines 579..587
      modules/auxiliary/admin/http/tomcat_utf8_traversal.rb on lines 49..57
      modules/auxiliary/admin/http/trendmicro_dlp_traversal.rb on lines 48..56
      modules/auxiliary/scanner/http/linksys_e1500_traversal.rb on lines 39..47
      modules/auxiliary/scanner/http/netgear_sph200d_traversal.rb on lines 36..44
      modules/auxiliary/scanner/http/tplink_traversal_noauth.rb on lines 36..44

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 25.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

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