Attachment 958146 Details for Bug 1164659 – 4.0 patch from upstream

[patch] 4.0 patch from upstream

4-0-sec-static-files.patch (text/plain), 2.99 KB, created by Murray McAllister on 2014-11-17 05:15:35 UTC

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Creator: Murray McAllister

Created: 2014-11-17 05:15:35 UTC

Size: 2.99 KB

patch

obsolete

>From 0d0bc45188425016458e6408e517e7fc1784de49 Mon Sep 17 00:00:00 2001
>From: Aaron Patterson <aaron.patterson@gmail.com>
>Date: Wed, 5 Nov 2014 15:37:36 -0800
>Subject: [PATCH] correctly escape backslashes in request path globs
>
>make sure that unreadable files are also not leaked
>
>CVE-2014-7829
>---
> .../lib/action_dispatch/middleware/static.rb       |  4 +--
> actionpack/test/dispatch/static_test.rb            | 41 ++++++++++++++++++++++
> 2 files changed, 43 insertions(+), 2 deletions(-)
>
>diff --git a/actionpack/lib/action_dispatch/middleware/static.rb b/actionpack/lib/action_dispatch/middleware/static.rb
>index df77021..2303447 100644
>--- a/actionpack/lib/action_dispatch/middleware/static.rb
>+++ b/actionpack/lib/action_dispatch/middleware/static.rb
>@@ -19,7 +19,7 @@ module ActionDispatch
>       paths = "#{full_path}#{ext}"
> 
>       matches = Dir[paths]
>-      match = matches.detect { |m| File.file?(m) }
>+      match = matches.detect { |m| File.file?(m) && File.readable?(m) }
>       if match
>         match.sub!(@compiled_root, '')
>         ::Rack::Utils.escape(match)
>@@ -42,7 +42,7 @@ module ActionDispatch
>     end
> 
>     def escape_glob_chars(path)
>-      path.gsub(/[*?{}\[\]]/, "\\\\\\&")
>+      path.gsub(/[*?{}\[\]\\]/, "\\\\\\&")
>     end
> 
>     private
>diff --git a/actionpack/test/dispatch/static_test.rb b/actionpack/test/dispatch/static_test.rb
>index 79a7975..3245e32 100644
>--- a/actionpack/test/dispatch/static_test.rb
>+++ b/actionpack/test/dispatch/static_test.rb
>@@ -1,5 +1,6 @@
> # encoding: utf-8
> require 'abstract_unit'
>+require 'fileutils'
> require 'rbconfig'
> 
> module StaticTests
>@@ -157,6 +158,46 @@ class StaticTest < ActiveSupport::TestCase
> 
>   include StaticTests
> 
>+  def test_custom_handler_called_when_file_is_not_readable
>+    filename = 'unreadable.html.erb'
>+    target = File.join(@root, filename)
>+    FileUtils.touch target
>+    File.chmod 0200, target
>+    assert File.exist? target
>+    assert !File.readable?(target)
>+    path = "/#{filename}"
>+    env = {
>+      "REQUEST_METHOD"=>"GET",
>+      "REQUEST_PATH"=> path,
>+      "PATH_INFO"=> path,
>+      "REQUEST_URI"=> path,
>+      "HTTP_VERSION"=>"HTTP/1.1",
>+      "SERVER_NAME"=>"localhost",
>+      "SERVER_PORT"=>"8080",
>+      "QUERY_STRING"=>""
>+    }
>+    assert_equal(DummyApp.call(nil), @app.call(env))
>+  ensure
>+    File.unlink target
>+  end
>+
>+  def test_custom_handler_called_when_file_is_outside_root_backslash
>+    filename = 'shared.html.erb'
>+    assert File.exist?(File.join(@root, '..', filename))
>+    path = "/%5C..%2F#{filename}"
>+    env = {
>+      "REQUEST_METHOD"=>"GET",
>+      "REQUEST_PATH"=> path,
>+      "PATH_INFO"=> path,
>+      "REQUEST_URI"=> path,
>+      "HTTP_VERSION"=>"HTTP/1.1",
>+      "SERVER_NAME"=>"localhost",
>+      "SERVER_PORT"=>"8080",
>+      "QUERY_STRING"=>""
>+    }
>+    assert_equal(DummyApp.call(nil), @app.call(env))
>+  end
>+
>   def test_custom_handler_called_when_file_is_outside_root
>     filename = 'shared.html.erb'
>     assert File.exist?(File.join(@root, '..', filename))
>-- 
>1.9.3 (Apple Git-50)
>

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