merge revision(s) 50829: [Backport #11248]

* lib/rubygems.rb: bump version to 2.4.5.1. this version fixed
  CVE-2015-3900.

* lib/rubygems/remote_fetcher.rb: ditto.

* test/rubygems/test_gem_remote_fetcher.rb: added testcase for CVE-2015-3900



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@51627 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

5 files changed, 66 insertions, 6 deletions

diff --git a/ChangeLog b/ChangeLog
index 06b5029527..a1a45d5458 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+Tue Aug 18 21:40:43 2015  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
+
+	* lib/rubygems.rb: bump version to 2.4.5.1. this version fixed
+	  CVE-2015-3900.
+
+	* lib/rubygems/remote_fetcher.rb: ditto.
+
+	* test/rubygems/test_gem_remote_fetcher.rb: added testcase for CVE-2015-3900
+
 Mon Aug 17 23:27:45 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/win32/lib/win32/registry.rb (API#SetValue): data size should
diff --git a/lib/rubygems.rb b/lib/rubygems.rb
index ea1893046f..73d063e7a0 100644
--- a/lib/rubygems.rb
+++ b/lib/rubygems.rb
@@ -8,7 +8,7 @@
 require 'rbconfig'
 
 module Gem
-  VERSION = '2.2.3'
+  VERSION = '2.2.5'
 end
 
 # Must be first since it unloads the prelude from 1.9.2
diff --git a/lib/rubygems/remote_fetcher.rb b/lib/rubygems/remote_fetcher.rb
index 58991caeda..ed2e171d2c 100644
--- a/lib/rubygems/remote_fetcher.rb
+++ b/lib/rubygems/remote_fetcher.rb
@@ -90,7 +90,13 @@ class Gem::RemoteFetcher
     rescue Resolv::ResolvError
       uri
     else
-      URI.parse "#{uri.scheme}://#{res.target}#{uri.path}"
+      target = res.target.to_s.strip
+
+      if /\.#{Regexp.quote(host)}\z/ =~ target
+        return URI.parse "#{uri.scheme}://#{target}#{uri.path}"
+      end
+
+      uri
     end
   end
 
diff --git a/test/rubygems/test_gem_remote_fetcher.rb b/test/rubygems/test_gem_remote_fetcher.rb
index 2fabd509ce..d391b90739 100644
--- a/test/rubygems/test_gem_remote_fetcher.rb
+++ b/test/rubygems/test_gem_remote_fetcher.rb
@@ -163,6 +163,21 @@ gems:
   end
 
   def test_api_endpoint
+    uri = URI.parse "http://example.com/foo"
+    target = MiniTest::Mock.new
+    target.expect :target, "gems.example.com"
+
+    dns = MiniTest::Mock.new
+    dns.expect :getresource, target, [String, Object]
+
+    fetch = Gem::RemoteFetcher.new nil, dns
+    assert_equal URI.parse("http://gems.example.com/foo"), fetch.api_endpoint(uri)
+
+    target.verify
+    dns.verify
+  end
+
+  def test_api_endpoint_ignores_trans_domain_values
     uri = URI.parse "http://gems.example.com/foo"
     target = MiniTest::Mock.new
     target.expect :target, "blah.com"
@@ -171,7 +186,37 @@ gems:
     dns.expect :getresource, target, [String, Object]
 
     fetch = Gem::RemoteFetcher.new nil, dns
-    assert_equal URI.parse("http://blah.com/foo"), fetch.api_endpoint(uri)
+    assert_equal URI.parse("http://gems.example.com/foo"), fetch.api_endpoint(uri)
+
+    target.verify
+    dns.verify
+  end
+
+  def test_api_endpoint_ignores_trans_domain_values_that_starts_with_original
+    uri = URI.parse "http://example.com/foo"
+    target = MiniTest::Mock.new
+    target.expect :target, "example.combadguy.com"
+
+    dns = MiniTest::Mock.new
+    dns.expect :getresource, target, [String, Object]
+
+    fetch = Gem::RemoteFetcher.new nil, dns
+    assert_equal URI.parse("http://example.com/foo"), fetch.api_endpoint(uri)
+
+    target.verify
+    dns.verify
+  end
+
+  def test_api_endpoint_ignores_trans_domain_values_that_end_with_original
+    uri = URI.parse "http://example.com/foo"
+    target = MiniTest::Mock.new
+    target.expect :target, "badexample.com"
+
+    dns = MiniTest::Mock.new
+    dns.expect :getresource, target, [String, Object]
+
+    fetch = Gem::RemoteFetcher.new nil, dns
+    assert_equal URI.parse("http://example.com/foo"), fetch.api_endpoint(uri)
 
     target.verify
     dns.verify
diff --git a/version.h b/version.h
index 4f8c2a8516..3ab5c1274f 100644
--- a/version.h
+++ b/version.h
@@ -1,10 +1,10 @@
 #define RUBY_VERSION "2.1.7"
-#define RUBY_RELEASE_DATE "2015-08-17"
-#define RUBY_PATCHLEVEL 399
+#define RUBY_RELEASE_DATE "2015-08-18"
+#define RUBY_PATCHLEVEL 400
 
 #define RUBY_RELEASE_YEAR 2015
 #define RUBY_RELEASE_MONTH 8
-#define RUBY_RELEASE_DAY 17
+#define RUBY_RELEASE_DAY 18
 
 #include "ruby/version.h"