Class: Arachni::Checks::MixedResource

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

Overview

Mixed Resource detection check

Looks for resources served over HTTP when the HTML code is server over HTTPS.

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, NestedCookie, 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

.infoObject


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# File 'components/checks/passive/grep/mixed_resource.rb', line 62

def self.info
    {
        name:        'Mixed Resource',
        description: %q{Looks for resources served over HTTP when the HTML code is server over HTTPS.},
        elements:    [ Element::Body ],
        author:      'Tasos "Zapotek" Laskos <[email protected]> ',
        version:     '0.1.5',

        issue:       {
            name:            %q{Mixed Resource},
            description:     %q{
The HTTP protocol by itself is clear text, meaning that any data that is
transmitted via HTTP can be captured and the contents viewed. To keep data
privateand prevent it from being intercepted, HTTP is often tunnelled through
either a Secure Sockets Layer (SSL), or Transport Layer Security (TLS) connection.
When either of these encryption standards are used, it is referred to as HTTPS.

Cyber-criminals will often attempt to compromise sensitive information passed
from the client to the server using HTTP.
This can be conducted via various different Man-in-The-Middle (MiTM) attacks or
through network packet captures.

Arachni discovered that the affected site is utilising both HTTP and HTTPS. While
the HTML code is served over HTTPS, the server is also serving resources over an
unencrypted channel, which can lead to the compromise of data, while providing a
false sense of security to the user.
},
            references:      {
                'Google Online Security Blog' =>
                    'http://googleonlinesecurity.blogspot.com/2011/06/trying-to-end-mixed-scripting.html'
            },
            tags:            %w(unencrypted resource javascript stylesheet),
            severity:        Severity::MEDIUM,
            remedy_guidance: %q{
All pages and/or resources on the affected site should be secured equally,
utilising the latest and most secure encryption protocols. These include SSL
version 3.0 and TLS version 1.2.

While TLS 1.2 is the latest and the most preferred protocol, not all browsers
will support this encryption method. Therefore, the more common SSL is included.
Older protocols such as SSL version 2, and weak ciphers (< 128 bit) should also
be disabled.
}
        }
    }
end

Instance Method Details

#https?(url) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'components/checks/passive/grep/mixed_resource.rb', line 51

def https?( url )
    uri_parse( to_absolute( url, page.url ) ).scheme == 'https'
end

#insecure_link?(script) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'components/checks/passive/grep/mixed_resource.rb', line 34

def insecure_link?( script )
    url = script.attributes['href'].to_s
    url && !url.empty? && script.attributes['rel'].to_s.downcase == 'stylesheet' &&
        !https?( url )
end

#insecure_script?(script) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'components/checks/passive/grep/mixed_resource.rb', line 40

def insecure_script?( script )
    url = script.attributes['src'].to_s
    return if url.empty?

    parsed = uri_parse( to_absolute( url, page.url ) )
    # Ignore resources injected by the browser required to do its job.
    return if !parsed || parsed.domain == 'browser.arachni'

    !https?( url )
end

#log_resource(url) ⇒ Object


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# File 'components/checks/passive/grep/mixed_resource.rb', line 55

def log_resource( url )
    return if audited?( url )
    audited( url )

    match_and_log( url )
end

#runObject


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

def run
    return if !https?( page.url ) || !page.document

    print_status 'Checking...'

    page.document.nodes_by_name( 'script' ).each do |script|
        url = script.attributes['src'].to_s
        log_resource( url ) if insecure_script?( script )
    end

    page.document.nodes_by_name( 'link' ).each do |script|
        url = script.attributes['href'].to_s
        log_resource( url ) if insecure_link?( script )
    end
end