Class: Arachni::Checks::CommonFiles

Inherits:
Arachni::Check::Base show all
Defined in:
components/checks/passive/common_files.rb

Overview

Looks for sensitive common files on the server.

Author:

Constant Summary

Constants included from Arachni::Check::Auditor

Arachni::Check::Auditor::DOM_ELEMENTS_WITH_INPUTS, Arachni::Check::Auditor::ELEMENTS_WITH_INPUTS, Arachni::Check::Auditor::FILE_SIGNATURES, Arachni::Check::Auditor::FILE_SIGNATURES_PER_PLATFORM, Arachni::Check::Auditor::Format, Arachni::Check::Auditor::SOURCE_CODE_SIGNATURES_PER_PLATFORM

Constants included from Arachni

BANNER, Arachni::Cookie, Form, Header, JSON, Link, LinkTemplate, Severity, UIForm, UIInput, VERSION, WEBSITE, WIKI, XML

Instance Attribute Summary

Attributes included from Arachni::Check::Auditor

#framework, #page

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Arachni::Check::Base

#browser_cluster, #clean_up, elements, exempt_platforms, has_exempt_platforms?, has_platforms?, #initialize, platforms, #plugins, prefer, #preferred, preferred, #prepare, #session, supports_platforms?

Methods included from Arachni::Check::Auditor

#audit, #audit_differential, #audit_signature, #audit_timeout, #audited, #audited?, #buffered_audit, #each_candidate_dom_element, #each_candidate_element, has_timeout_candidates?, #http, #initialize, #log, #log_issue, #log_remote_file, #log_remote_file_if_exists, #match_and_log, #max_issues, #preferred, reset, #skip?, timeout_audit_run, #trace_taint, #with_browser, #with_browser_cluster

Methods inherited from Arachni::Component::Base

author, description, fullname, #shortname, shortname, shortname=, version

Methods included from Arachni::Component::Output

#depersonalize_output, #depersonalize_output?, #intercept_print_message

Methods included from UI::Output

#caller_location, #debug?, #debug_level, #debug_level_1?, #debug_level_2?, #debug_level_3?, #debug_level_4?, #debug_off, #debug_on, #disable_only_positives, #error_buffer, #error_log_fd, #error_logfile, #has_error_log?, #included, #log_error, #mute, #muted?, #only_positives, #only_positives?, #print_bad, #print_debug, #print_debug_backtrace, #print_debug_exception, #print_debug_level_1, #print_debug_level_2, #print_debug_level_3, #print_debug_level_4, #print_error, #print_error_backtrace, #print_exception, #print_info, #print_line, #print_ok, #print_status, #print_verbose, #reroute_to_file, #reroute_to_file?, reset_output_options, #set_error_logfile, #unmute, #verbose?, #verbose_off, #verbose_on

Methods included from Arachni::Component::Utilities

#read_file

Methods included from Utilities

#available_port, available_port_mutex, #bytes_to_kilobytes, #bytes_to_megabytes, #caller_name, #caller_path, #cookie_decode, #cookie_encode, #cookies_from_file, #cookies_from_parser, #cookies_from_response, #exception_jail, #exclude_path?, #follow_protocol?, #form_decode, #form_encode, #forms_from_parser, #forms_from_response, #full_and_absolute_url?, #generate_token, #get_path, #hms_to_seconds, #html_decode, #html_encode, #include_path?, #links_from_parser, #links_from_response, #normalize_url, #page_from_response, #page_from_url, #parse_set_cookie, #path_in_domain?, #path_too_deep?, #port_available?, #rand_port, #random_seed, #redundant_path?, #regexp_array_match, #remove_constants, #request_parse_body, #seconds_to_hms, #skip_page?, #skip_path?, #skip_resource?, #skip_response?, #to_absolute, #uri_decode, #uri_encode, #uri_parse, #uri_parse_query, #uri_parser, #uri_rewrite

Methods included from Arachni

URI, collect_young_objects, #get_long_win32_filename, jruby?, null_device, profile?, windows?

Constructor Details

This class inherits a constructor from Arachni::Check::Base

Class Method Details

.filenamesObject


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# File 'components/checks/passive/common_files.rb', line 14

def self.filenames
    @filenames ||= read_file( 'filenames.txt' )
end

.infoObject


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# File 'components/checks/passive/common_files.rb', line 28

def self.info
    {
        name:             'Common files',
        description:      %q{Tries to find common sensitive files on the server.},
        elements:         [ Element::Server ],
        author:           'Tasos "Zapotek" Laskos <[email protected]> ',
        version:          '0.2.4',
        exempt_platforms: Arachni::Platform::Manager::FRAMEWORKS,

        issue:       {
            name:            %q{Common sensitive file},
            description:     %q{
Web applications are often made up of multiple files and directories.

It is possible that over time some files may become unreferenced (unused)
by the web application and forgotten about by the administrator/developer.
Because web applications are built using common frameworks, they contain common
files that can be discovered (independent of server).

During the initial recon stages of an attack, cyber-criminals will attempt to
locate unreferenced files in the hope that the file will assist in further
compromise of the web application.
To achieve this they will make thousands of requests using word lists containing
common filenames.
The response headers from the server will then indicate if the file exists.

Arachni also contains a list of common file names which it will attempt to access.
},
            references: {
                'Apache.org' => 'http://httpd.apache.org/docs/2.0/mod/mod_access.html'
            },
            tags:            %w(common path file discovery),
            severity:        Severity::LOW,
            remedy_guidance: %q{
If files are unreferenced then they should be removed from the web root
and/or the application directory.

Preventing access without authentication may also be an option and can stop a
client from being able to view the contents of a file, however it is still likely
that the directory structure will be able to be discovered.

Using obscure file names is implementing security through obscurity and is
not a recommended option.
}
        }
    }
end

Instance Method Details

#runObject


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# File 'components/checks/passive/common_files.rb', line 18

def run
    return if page.code != 200

    path = get_path( page.url )
    return if audited?( path )

    self.class.filenames.each { |file| log_remote_file_if_exists( path + file ) }
    audited( path )
end