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rapid7/metasploit-framework

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modules/exploits/multi/postgres/postgres_createlang.rb

Summary

Maintainability
C
1 day
Test Coverage

Method exploit has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.
Open

  def exploit
    self.postgres_conn = session.client if session
    return unless vuln_version?
    return unless login_success?
Severity: Minor
Found in modules/exploits/multi/postgres/postgres_createlang.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 35 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  def initialize(info = {})
    super(update_info(info,
      'Name' => 'PostgreSQL CREATE LANGUAGE Execution',
      'Description' => %q(
        Some installations of Postgres 8 and 9 are configured to allow loading external scripting languages.
Severity: Minor
Found in modules/exploits/multi/postgres/postgres_createlang.rb - About 1 hr to fix

    Method create_function? has 27 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      def create_function?(language, func_name)
    load_func = ''

    case language
    when 'perl'
    Severity: Minor
    Found in modules/exploits/multi/postgres/postgres_createlang.rb - About 1 hr to fix

      Method exec_function? has 26 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

        def exec_function?(func_name)
    query = "SELECT exec_#{func_name}('#{payload.encoded.gsub("'", "''")}')"
    select_query = postgres_query(query)

    case select_query.keys[0]
      Severity: Minor
      Found in modules/exploits/multi/postgres/postgres_createlang.rb - About 1 hr to fix

        Avoid too many return statements within this method.
        Open

              return false
        Severity: Major
        Found in modules/exploits/multi/postgres/postgres_createlang.rb - About 30 mins to fix

          Avoid too many return statements within this method.
          Open

                return true
          Severity: Major
          Found in modules/exploits/multi/postgres/postgres_createlang.rb - About 30 mins to fix

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

              def exec_function?(func_name)
    query = "SELECT exec_#{func_name}('#{payload.encoded.gsub("'", "''")}')"
    select_query = postgres_query(query)

    case select_query.keys[0]
            Severity: Minor
            Found in modules/exploits/multi/postgres/postgres_createlang.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

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

              def do_login(user, pass, database)
    begin
      password = pass || postgres_password
      result = postgres_fingerprint(
        db: database,
            Severity: Minor
            Found in modules/exploits/multi/postgres/postgres_createlang.rb and 1 other location - About 40 mins to fix
            modules/exploits/multi/postgres/postgres_copy_from_program_cmd_exec.rb on lines 219..234

            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 38.

            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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