Fix for Rails vulnerabilities CVE-2012-2694 and CVE-2012-2695.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/1.4-stable@9849 e93f8b46-1217-0410-a6f0-8f06a7374b81

config/initializers/10-patches.rb

@@ -88,22 +88,25 @@ module ActionController
 
   # CVE-2012-2660
   # https://groups.google.com/group/rubyonrails-security/browse_thread/thread/f1203e3376acec0f
+  # CVE-2012-2694
+  # https://groups.google.com/group/rubyonrails-security/browse_thread/thread/8c82d9df8b401c5e
   class Request
     protected
 
     # Remove nils from the params hash
     def deep_munge(hash)
+      keys = hash.keys.find_all { |k| hash[k] == [nil] }
+      keys.each { |k| hash[k] = nil }
+
       hash.each_value do |v|
         case v
         when Array
           v.grep(Hash) { |x| deep_munge(x) }
+          v.compact!
         when Hash
           deep_munge(v)
         end
       end
-
-      keys = hash.keys.find_all { |k| hash[k] == [nil] }
-      keys.each { |k| hash[k] = nil }
       hash
     end
 
@@ -112,3 +115,40 @@ module ActionController
     end
   end
 end
+
+# CVE-2012-2695
+# https://groups.google.com/group/rubyonrails-security/browse_thread/thread/9782f44c4540cf59
+module ActiveRecord
+  class Base
+    class << self
+      def sanitize_sql_hash_for_conditions(attrs, default_table_name = quoted_table_name, top_level = true)
+        attrs = expand_hash_conditions_for_aggregates(attrs)
+
+        conditions = attrs.map do |attr, value|
+          table_name = default_table_name
+
+          if not value.is_a?(Hash)
+            attr = attr.to_s
+
+            # Extract table name from qualified attribute names.
+            if attr.include?('.') and top_level
+              attr_table_name, attr = attr.split('.', 2)
+              attr_table_name = connection.quote_table_name(attr_table_name)
+            else
+              attr_table_name = table_name
+            end
+
+            attribute_condition("#{attr_table_name}.#{connection.quote_column_name(attr)}", value)
+          elsif top_level
+            sanitize_sql_hash_for_conditions(value, connection.quote_table_name(attr.to_s), false)
+          else
+            raise ActiveRecord::StatementInvalid
+          end
+        end.join(' AND ')
+
+        replace_bind_variables(conditions, expand_range_bind_variables(attrs.values))
+      end
+      alias_method :sanitize_sql_hash, :sanitize_sql_hash_for_conditions
+    end
+  end
+end

doc/CHANGELOG

@@ -13,6 +13,7 @@ http://www.redmine.org/
 * Defect #11178: Spent time sorted by date-descending order lists same-date entries in physical order
 * Feature #6597: Configurable session lifetime and timeout
 * Patch #11113: Small glitch in German localization
+* Fix for Rails vulnerabilities CVE-2012-2694 and CVE-2012-2695
 
 == 2012-06-05 v1.4.3