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rapid7/metasploit-framework

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modules/exploits/linux/local/cve_2022_0847_dirtypipe.rb

Summary

Maintainability
B
6 hrs
Test Coverage

Method initialize has 58 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'Dirty Pipe Local Privilege Escalation via CVE-2022-0847',
Severity: Major
Found in modules/exploits/linux/local/cve_2022_0847_dirtypipe.rb - About 2 hrs to fix

    Method exploit has 33 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      def exploit
    suid_binary_path = datastore['SUID_BINARY_PATH']
    fail_with(Failure::BadConfig, 'The suid binary was not found; try setting SUID_BINARY_PATH') if suid_binary_path.nil?
    fail_with(Failure::BadConfig, "The #{suid_binary_path} binary setuid bit is not set") unless setuid?(suid_binary_path)
    Severity: Minor
    Found in modules/exploits/linux/local/cve_2022_0847_dirtypipe.rb - About 1 hr to fix

      Method exploit has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.
      Open

        def exploit
    suid_binary_path = datastore['SUID_BINARY_PATH']
    fail_with(Failure::BadConfig, 'The suid binary was not found; try setting SUID_BINARY_PATH') if suid_binary_path.nil?
    fail_with(Failure::BadConfig, "The #{suid_binary_path} binary setuid bit is not set") unless setuid?(suid_binary_path)
      Severity: Minor
      Found in modules/exploits/linux/local/cve_2022_0847_dirtypipe.rb - About 1 hr 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 check has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
      Open

        def check
    arch = kernel_arch
    unless live_compile? || arch.include?('x64') || arch.include?('aarch64') || arch.include?('x86') || arch.include?('armle')
      return CheckCode::Safe("System architecture #{arch} is not supported without live compilation")
    end
      Severity: Minor
      Found in modules/exploits/linux/local/cve_2022_0847_dirtypipe.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

      Consider simplifying this complex logical expression.
      Open

          if kernel_version < Rex::Version.new('5.8') ||
       kernel_version >= Rex::Version.new('5.16.11') ||
       (kernel_version >= Rex::Version.new('5.15.25') && kernel_version < Rex::Version.new('5.16')) ||
       (kernel_version >= Rex::Version.new('5.10.102') && kernel_version < Rex::Version.new('5.11'))
      return CheckCode::Safe("Linux kernel version #{kernel_version} is not vulnerable")
      Severity: Major
      Found in modules/exploits/linux/local/cve_2022_0847_dirtypipe.rb - About 40 mins to fix

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