Sha256: 02f64a1823b84daf8c8d30b68cc94cdbbca8c15e90bc1aebcacb8a66a9f1a562
Contents?: true
Size: 1.08 KB
Versions: 14
Compression:
Stored size: 1.08 KB
Contents
require 'rexml/document'
require 'rexml/entity'
# Fixes the rexml vulnerability disclosed at:
# http://www.ruby-lang.org/en/news/2008/08/23/dos-vulnerability-in-rexml/
# This fix is identical to rexml-expansion-fix version 1.0.1
# Earlier versions of rexml defined REXML::Version, newer ones REXML::VERSION
unless REXML::Document.respond_to?(:entity_expansion_limit=)
module REXML
class Entity < Child
undef_method :unnormalized
def unnormalized
document.record_entity_expansion! if document
v = value()
return nil if v.nil?
@unnormalized = Text::unnormalize(v, parent)
@unnormalized
end
end
class Document < Element
@@entity_expansion_limit = 10_000
def self.entity_expansion_limit= val
@@entity_expansion_limit = val
end
def record_entity_expansion!
@number_of_expansions ||= 0
@number_of_expansions += 1
if @number_of_expansions > @@entity_expansion_limit
raise "Number of entity expansions exceeded, processing aborted."
end
end
end
end
end
Version data entries
14 entries across 13 versions & 8 rubygems