Parent

Vulnerable

Files

WpVersion

Attributes

discovery_method[R]
number[R]

Public Class Methods

find(target_uri) click to toggle source

Will use all method self.find_from_* to try to detect the version Once the version is found, it will return a WpVersion object The method_name will be without ‘find_from_’ and ‘_’ will be replace by ‘ ’ (IE ‘meta generator’, ‘rss generator’ etc) If the version is not found, nil is returned

The order in which the find_from_* methods are is important, they will be called in the same order (find_from_meta_generator, find_from_rss_generator etc)

# File lib/wpscan/wp_version.rb, line 39
def self.find(target_uri)
  self.methods.grep(/find_from_/).each do |method_to_call|
    version = self.send(method_to_call, target_uri)

    if version
      return new(version, :discovery_method => method_to_call[%{find_from_(.*)}, 1].gsub('_', ' '))
    end
  end
  nil
end
new(number, options = {}) click to toggle source 
# File lib/wpscan/wp_version.rb, line 25
def initialize(number, options = {})
  @number           = number
  @discovery_method = options[:discovery_method]
  @vulns_xml        = options[:vulns_xml] || DATA_DIR + '/wp_vulns.xml'
  @vulns_xpath      = "//wordpress[@version='#{@number}']/vulnerability"
end

Protected Class Methods

find_from_advanced_fingerprinting(target_uri) click to toggle source

Uses data/wp_versions.xml to try to identify a wordpress version.

It does this by using client side file hashing with a scoring system.

The scoring system is a number representing the uniqueness of a client side file across all versions of wordpress.

Example:

Score - Hash - File - Versions

 1 - 3e63c08553696a1dedb24b22ef6783c3 - /wp-content/themes/twentyeleven/style.css - 3.2.1
 2 - 15fc925fd39bb496871e842b2a754c76 - /wp-includes/js/wp-lists.js - 2.6,2.5.1
 3 - 3f03bce84d1d2a169b4bf4d8a0126e38 - /wp-includes/js/autosave.js - 2.9.2,2.9.1,2.9

/!\ Warning : this method might return false positive if the file used for fingerprinting is part of a theme (they can be updated)
# File lib/wpscan/wp_version.rb, line 88
def self.find_from_advanced_fingerprinting(target_uri)
  xml = Nokogiri::XML(File.open(DATA_DIR + '/wp_versions.xml')) do |config|
    config.noblanks
  end

  xml.xpath("//file").each do |node|
    file_url = target_uri.merge(node.attribute('src').text).to_s
    response = Browser.instance.get(file_url)
    md5sum   = Digest::MD5.hexdigest(response.body)

    node.search('hash').each do |hash|
      if hash.attribute('md5').text == md5sum
       return hash.search('versions').text
      end
    end
  end
  nil # Otherwise the data['file'] is returned (issue #107)
end
find_from_meta_generator(target_uri) click to toggle source

Attempts to find the wordpress version from, the generator meta tag in the html source.

The meta tag can be removed however it seems, that it is reinstated on upgrade.

# File lib/wpscan/wp_version.rb, line 57
def self.find_from_meta_generator(target_uri)
  response = Browser.instance.get(target_uri.to_s, :follow_location => true, :max_redirects => 2)

  response.body[%{name="generator" content="wordpress ([^"]+)"}, 1]
end
find_from_readme(target_uri) click to toggle source 
# File lib/wpscan/wp_version.rb, line 107
def self.find_from_readme(target_uri)
  Browser.instance.get(target_uri.merge("readme.html").to_s).body[%{<br />\sversion #{WpVersion.version_pattern}}, 1]
end
find_from_rss_generator(target_uri) click to toggle source 
# File lib/wpscan/wp_version.rb, line 63
def self.find_from_rss_generator(target_uri)
  response = Browser.instance.get(target_uri.merge("feed/").to_s, :follow_location => true, :max_redirects => 2)

  response.body[%{<generator>http://wordpress.org/\?v=([^<]+)</generator>}, 1]
end
find_from_sitemap_generator(target_uri) click to toggle source

code.google.com/p/wpscan/issues/detail?id=109

# File lib/wpscan/wp_version.rb, line 112
def self.find_from_sitemap_generator(target_uri)
  Browser.instance.get(target_uri.merge("sitemap.xml").to_s).body[%{generator="wordpress/#{WpVersion.version_pattern}"}, 1]
end
version_pattern() click to toggle source

Used to check if the version is correct : should be numeric with at least one ‘.’

# File lib/wpscan/wp_version.rb, line 117
def self.version_pattern
  '(.*(?=.)(?=.*\d)(?=.*[.]).*)'
end

[Validate]

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