Sha256: a307fcbad150e75260a5c86488fd3cac5ed6106126eb452f303f3d9877ae9c01
Contents?: true
Size: 1.96 KB
Versions: 25
Compression:
Stored size: 1.96 KB
Contents
require 'brakeman/checks/base_check'
class Brakeman::CheckModelSerialize < Brakeman::BaseCheck
Brakeman::Checks.add self
@description = "Report uses of serialize in versions vulnerable to CVE-2013-0277"
def run_check
@upgrade_version = case
when version_between?("2.0.0", "2.3.16")
"2.3.17"
when version_between?("3.0.0", "3.0.99")
"3.2.11"
else
nil
end
return unless @upgrade_version
tracker.models.each do |_name, model|
check_for_serialize model
end
end
#High confidence warning on serialized, unprotected attributes.
#Medium confidence warning for serialized, protected attributes.
def check_for_serialize model
if serialized_attrs = model.options[:serialize]
attrs = Set.new
serialized_attrs.each do |arglist|
arglist.each do |arg|
attrs << arg if symbol? arg
end
end
if unsafe_attrs = model.attr_accessible
attrs.delete_if { |attr| not unsafe_attrs.include? attr.value }
elsif protected_attrs = model.attr_protected
safe_attrs = Set.new
protected_attrs.each do |arglist|
arglist.each do |arg|
safe_attrs << arg if symbol? arg
end
end
attrs.delete_if { |attr| safe_attrs.include? attr }
end
if attrs.empty?
confidence = :medium
else
confidence = :high
end
warn :model => model.name,
:warning_type => "Remote Code Execution",
:warning_code => :CVE_2013_0277,
:message => "Serialized attributes are vulnerable in Rails #{rails_version}, upgrade to #{@upgrade_version} or patch.",
:confidence => confidence,
:link => "https://groups.google.com/d/topic/rubyonrails-security/KtmwSbEpzrU/discussion",
:file => model.file,
:line => model.top_line
end
end
end
Version data entries
25 entries across 25 versions & 3 rubygems