CVE-2012-2126

@@ -130,6 +130,16 @@ class Gem::ConfigFile
 
   attr_reader :api_keys
 
+  ##
+  # openssl verify mode value, used for remote https connection
+
+  attr_reader :ssl_verify_mode
+
+  ##
+  # Path name of directory or file of openssl CA certificate, used for remote https connection
+
+  attr_reader :ssl_ca_cert
+
   ##
   # Create the config file object.  +args+ is the list of arguments
   # from the command line.
@@ -192,6 +202,8 @@ def initialize(arg_list)
     @path             = @hash[:gempath]          if @hash.key? :gempath
     @update_sources   = @hash[:update_sources]   if @hash.key? :update_sources
     @verbose          = @hash[:verbose]          if @hash.key? :verbose
+    @ssl_verify_mode  = @hash[:ssl_verify_mode]  if @hash.key? :ssl_verify_mode
+    @ssl_ca_cert      = @hash[:ssl_ca_cert]      if @hash.key? :ssl_ca_cert
 
     load_api_keys
 

@@ -8,6 +8,8 @@
 
 class Gem::RemoteFetcher
 
+  BuiltinSSLCerts = File.expand_path("./ssl_certs/*.pem", File.dirname(__FILE__))
+
   include Gem::UserInteraction
 
   ##
@@ -210,6 +212,11 @@ def fetch_http uri, last_modified = nil, head = false, depth = 0
       raise FetchError.new('too many redirects', uri) if depth > 10
 
       location = URI.parse response['Location']
+
+      if https?(uri) && !https?(location)
+        raise FetchError.new("redirecting to non-https resource: #{location}", uri)
+      end
+
       fetch_http(location, last_modified, head, depth + 1)
     else
       raise FetchError.new("bad response #{response.message} #{response.code}", uri)
@@ -312,19 +319,46 @@ def connection_for(uri)
     @connections[connection_id] ||= Net::HTTP.new(*net_http_args)
     connection = @connections[connection_id]
 
-    if uri.scheme == 'https' and not connection.started? then
-      require 'net/https'
-      connection.use_ssl = true
-      connection.verify_mode = OpenSSL::SSL::VERIFY_NONE
+    if https?(uri) and !connection.started? then
+      configure_connection_for_https(connection)
     end
 
     connection.start unless connection.started?
 
     connection
-  rescue Errno::EHOSTDOWN => e
+  rescue OpenSSL::SSL::SSLError, Errno::EHOSTDOWN => e
     raise FetchError.new(e.message, uri)
   end
 
+  def configure_connection_for_https(connection)
+    require 'net/https'
+
+    connection.use_ssl = true
+    connection.verify_mode =
+      Gem.configuration.ssl_verify_mode || OpenSSL::SSL::VERIFY_PEER
+
+    store = OpenSSL::X509::Store.new
+
+    if Gem.configuration.ssl_ca_cert
+      if File.directory? Gem.configuration.ssl_ca_cert
+        store.add_path Gem.configuration.ssl_ca_cert
+      else
+        store.add_file Gem.configuration.ssl_ca_cert
+      end
+    else
+      store.set_default_paths
+      add_rubygems_trusted_certs(store)
+    end
+
+    connection.cert_store = store
+  end
+
+  def add_rubygems_trusted_certs(store)
+    Dir.glob(BuiltinSSLCerts).each do |ssl_cert_file|
+      store.add_file ssl_cert_file
+    end
+  end
+
   def correct_for_windows_path(path)
     if path[0].chr == '/' && path[1].chr =~ /[a-z]/i && path[2].chr == ':'
       path = path[1..-1]
@@ -465,5 +499,9 @@ def user_agent
     ua
   end
 
+  def https?(uri)
+    uri.scheme.downcase == 'https'
+  end
+
 end
 

@@ -0,0 +1,90 @@
+This CA certificate is for verifying HTTPS connection to;
+  - https://rubygems.org/ (obtained by RubyGems team)
+
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 1 (0x1)
+    Signature Algorithm: sha1WithRSAEncryption
+        Issuer: C=SE, O=AddTrust AB, OU=AddTrust External TTP Network, CN=AddTrust External CA Root
+        Validity
+            Not Before: May 30 10:48:38 2000 GMT
+            Not After : May 30 10:48:38 2020 GMT
+        Subject: C=SE, O=AddTrust AB, OU=AddTrust External TTP Network, CN=AddTrust External CA Root
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (2048 bit)
+                Modulus:
+                    00:b7:f7:1a:33:e6:f2:00:04:2d:39:e0:4e:5b:ed:
+                    1f:bc:6c:0f:cd:b5:fa:23:b6:ce:de:9b:11:33:97:
+                    a4:29:4c:7d:93:9f:bd:4a:bc:93:ed:03:1a:e3:8f:
+                    cf:e5:6d:50:5a:d6:97:29:94:5a:80:b0:49:7a:db:
+                    2e:95:fd:b8:ca:bf:37:38:2d:1e:3e:91:41:ad:70:
+                    56:c7:f0:4f:3f:e8:32:9e:74:ca:c8:90:54:e9:c6:
+                    5f:0f:78:9d:9a:40:3c:0e:ac:61:aa:5e:14:8f:9e:
+                    87:a1:6a:50:dc:d7:9a:4e:af:05:b3:a6:71:94:9c:
+                    71:b3:50:60:0a:c7:13:9d:38:07:86:02:a8:e9:a8:
+                    69:26:18:90:ab:4c:b0:4f:23:ab:3a:4f:84:d8:df:
+                    ce:9f:e1:69:6f:bb:d7:42:d7:6b:44:e4:c7:ad:ee:
+                    6d:41:5f:72:5a:71:08:37:b3:79:65:a4:59:a0:94:
+                    37:f7:00:2f:0d:c2:92:72:da:d0:38:72:db:14:a8:
+                    45:c4:5d:2a:7d:b7:b4:d6:c4:ee:ac:cd:13:44:b7:
+                    c9:2b:dd:43:00:25:fa:61:b9:69:6a:58:23:11:b7:
+                    a7:33:8f:56:75:59:f5:cd:29:d7:46:b7:0a:2b:65:
+                    b6:d3:42:6f:15:b2:b8:7b:fb:ef:e9:5d:53:d5:34:
+                    5a:27
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier: 
+                AD:BD:98:7A:34:B4:26:F7:FA:C4:26:54:EF:03:BD:E0:24:CB:54:1A
+            X509v3 Key Usage: 
+                Certificate Sign, CRL Sign
+            X509v3 Basic Constraints: critical
+                CA:TRUE
+            X509v3 Authority Key Identifier: 
+                keyid:AD:BD:98:7A:34:B4:26:F7:FA:C4:26:54:EF:03:BD:E0:24:CB:54:1A
+                DirName:/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA Root
+                serial:01
+
+    Signature Algorithm: sha1WithRSAEncryption
+         b0:9b:e0:85:25:c2:d6:23:e2:0f:96:06:92:9d:41:98:9c:d9:
+         84:79:81:d9:1e:5b:14:07:23:36:65:8f:b0:d8:77:bb:ac:41:
+         6c:47:60:83:51:b0:f9:32:3d:e7:fc:f6:26:13:c7:80:16:a5:
+         bf:5a:fc:87:cf:78:79:89:21:9a:e2:4c:07:0a:86:35:bc:f2:
+         de:51:c4:d2:96:b7:dc:7e:4e:ee:70:fd:1c:39:eb:0c:02:51:
+         14:2d:8e:bd:16:e0:c1:df:46:75:e7:24:ad:ec:f4:42:b4:85:
+         93:70:10:67:ba:9d:06:35:4a:18:d3:2b:7a:cc:51:42:a1:7a:
+         63:d1:e6:bb:a1:c5:2b:c2:36:be:13:0d:e6:bd:63:7e:79:7b:
+         a7:09:0d:40:ab:6a:dd:8f:8a:c3:f6:f6:8c:1a:42:05:51:d4:
+         45:f5:9f:a7:62:21:68:15:20:43:3c:99:e7:7c:bd:24:d8:a9:
+         91:17:73:88:3f:56:1b:31:38:18:b4:71:0f:9a:cd:c8:0e:9e:
+         8e:2e:1b:e1:8c:98:83:cb:1f:31:f1:44:4c:c6:04:73:49:76:
+         60:0f:c7:f8:bd:17:80:6b:2e:e9:cc:4c:0e:5a:9a:79:0f:20:
+         0a:2e:d5:9e:63:26:1e:55:92:94:d8:82:17:5a:7b:d0:bc:c7:
+         8f:4e:86:04
+
+-----BEGIN CERTIFICATE-----
+MIIENjCCAx6gAwIBAgIBATANBgkqhkiG9w0BAQUFADBvMQswCQYDVQQGEwJTRTEU
+MBIGA1UEChMLQWRkVHJ1c3QgQUIxJjAkBgNVBAsTHUFkZFRydXN0IEV4dGVybmFs
+IFRUUCBOZXR3b3JrMSIwIAYDVQQDExlBZGRUcnVzdCBFeHRlcm5hbCBDQSBSb290
+MB4XDTAwMDUzMDEwNDgzOFoXDTIwMDUzMDEwNDgzOFowbzELMAkGA1UEBhMCU0Ux
+FDASBgNVBAoTC0FkZFRydXN0IEFCMSYwJAYDVQQLEx1BZGRUcnVzdCBFeHRlcm5h
+bCBUVFAgTmV0d29yazEiMCAGA1UEAxMZQWRkVHJ1c3QgRXh0ZXJuYWwgQ0EgUm9v
+dDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALf3GjPm8gAELTngTlvt
+H7xsD821+iO2zt6bETOXpClMfZOfvUq8k+0DGuOPz+VtUFrWlymUWoCwSXrbLpX9
+uMq/NzgtHj6RQa1wVsfwTz/oMp50ysiQVOnGXw94nZpAPA6sYapeFI+eh6FqUNzX
+mk6vBbOmcZSccbNQYArHE504B4YCqOmoaSYYkKtMsE8jqzpPhNjfzp/haW+710LX
+a0Tkx63ubUFfclpxCDezeWWkWaCUN/cALw3CknLa0Dhy2xSoRcRdKn23tNbE7qzN
+E0S3ySvdQwAl+mG5aWpYIxG3pzOPVnVZ9c0p10a3CitlttNCbxWyuHv77+ldU9U0
+WicCAwEAAaOB3DCB2TAdBgNVHQ4EFgQUrb2YejS0Jvf6xCZU7wO94CTLVBowCwYD
+VR0PBAQDAgEGMA8GA1UdEwEB/wQFMAMBAf8wgZkGA1UdIwSBkTCBjoAUrb2YejS0
+Jvf6xCZU7wO94CTLVBqhc6RxMG8xCzAJBgNVBAYTAlNFMRQwEgYDVQQKEwtBZGRU
+cnVzdCBBQjEmMCQGA1UECxMdQWRkVHJ1c3QgRXh0ZXJuYWwgVFRQIE5ldHdvcmsx
+IjAgBgNVBAMTGUFkZFRydXN0IEV4dGVybmFsIENBIFJvb3SCAQEwDQYJKoZIhvcN
+AQEFBQADggEBALCb4IUlwtYj4g+WBpKdQZic2YR5gdkeWxQHIzZlj7DYd7usQWxH
+YINRsPkyPef89iYTx4AWpb9a/IfPeHmJIZriTAcKhjW88t5RxNKWt9x+Tu5w/Rw5
+6wwCURQtjr0W4MHfRnXnJK3s9EK0hZNwEGe6nQY1ShjTK3rMUUKhemPR5ruhxSvC
+Nr4TDea9Y355e6cJDUCrat2PisP29owaQgVR1EX1n6diIWgVIEM8med8vSTYqZEX
+c4g/VhsxOBi0cQ+azcgOno4uG+GMmIPLHzHxREzGBHNJdmAPx/i9F4BrLunMTA5a
+mnkPIAou1Z5jJh5VkpTYghdae9C8x49OhgQ=
+-----END CERTIFICATE-----

@@ -0,0 +1,90 @@
+This CA certificate is for verifying HTTPS connection to;
+  - https://d2chzxaqi4y7f8.cloudfront.net/ (prepared by AWS)
+
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 927650371 (0x374ad243)
+    Signature Algorithm: sha1WithRSAEncryption
+        Issuer: C=US, O=Entrust.net, OU=www.entrust.net/CPS incorp. by ref. (limits liab.), OU=(c) 1999 Entrust.net Limited, CN=Entrust.net Secure Server Certification Authority
+        Validity
+            Not Before: May 25 16:09:40 1999 GMT
+            Not After : May 25 16:39:40 2019 GMT
+        Subject: C=US, O=Entrust.net, OU=www.entrust.net/CPS incorp. by ref. (limits liab.), OU=(c) 1999 Entrust.net Limited, CN=Entrust.net Secure Server Certification Authority
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (1024 bit)
+                Modulus:
+                    00:cd:28:83:34:54:1b:89:f3:0f:af:37:91:31:ff:
+                    af:31:60:c9:a8:e8:b2:10:68:ed:9f:e7:93:36:f1:
+                    0a:64:bb:47:f5:04:17:3f:23:47:4d:c5:27:19:81:
+                    26:0c:54:72:0d:88:2d:d9:1f:9a:12:9f:bc:b3:71:
+                    d3:80:19:3f:47:66:7b:8c:35:28:d2:b9:0a:df:24:
+                    da:9c:d6:50:79:81:7a:5a:d3:37:f7:c2:4a:d8:29:
+                    92:26:64:d1:e4:98:6c:3a:00:8a:f5:34:9b:65:f8:
+                    ed:e3:10:ff:fd:b8:49:58:dc:a0:de:82:39:6b:81:
+                    b1:16:19:61:b9:54:b6:e6:43
+                Exponent: 3 (0x3)
+        X509v3 extensions:
+            Netscape Cert Type: 
+                SSL CA, S/MIME CA, Object Signing CA
+            X509v3 CRL Distribution Points: 
+
+                Full Name:
+                  DirName: C = US, O = Entrust.net, OU = www.entrust.net/CPS incorp. by ref. (limits liab.), OU = (c) 1999 Entrust.net Limited, CN = Entrust.net Secure Server Certification Authority, CN = CRL1
+
+                Full Name:
+                  URI:http://www.entrust.net/CRL/net1.crl
+
+            X509v3 Private Key Usage Period: 
+                Not Before: May 25 16:09:40 1999 GMT, Not After: May 25 16:09:40 2019 GMT
+            X509v3 Key Usage: 
+                Certificate Sign, CRL Sign
+            X509v3 Authority Key Identifier: 
+                keyid:F0:17:62:13:55:3D:B3:FF:0A:00:6B:FB:50:84:97:F3:ED:62:D0:1A
+
+            X509v3 Subject Key Identifier: 
+                F0:17:62:13:55:3D:B3:FF:0A:00:6B:FB:50:84:97:F3:ED:62:D0:1A
+            X509v3 Basic Constraints: 
+                CA:TRUE
+            1.2.840.113533.7.65.0: 
+                0
+..V4.0....
+    Signature Algorithm: sha1WithRSAEncryption
+         90:dc:30:02:fa:64:74:c2:a7:0a:a5:7c:21:8d:34:17:a8:fb:
+         47:0e:ff:25:7c:8d:13:0a:fb:e4:98:b5:ef:8c:f8:c5:10:0d:
+         f7:92:be:f1:c3:d5:d5:95:6a:04:bb:2c:ce:26:36:65:c8:31:
+         c6:e7:ee:3f:e3:57:75:84:7a:11:ef:46:4f:18:f4:d3:98:bb:
+         a8:87:32:ba:72:f6:3c:e2:3d:9f:d7:1d:d9:c3:60:43:8c:58:
+         0e:22:96:2f:62:a3:2c:1f:ba:ad:05:ef:ab:32:78:87:a0:54:
+         73:19:b5:5c:05:f9:52:3e:6d:2d:45:0b:f7:0a:93:ea:ed:06:
+         f9:b2
+
+-----BEGIN CERTIFICATE-----
+MIIE2DCCBEGgAwIBAgIEN0rSQzANBgkqhkiG9w0BAQUFADCBwzELMAkGA1UEBhMC
+VVMxFDASBgNVBAoTC0VudHJ1c3QubmV0MTswOQYDVQQLEzJ3d3cuZW50cnVzdC5u
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+MFqBDzIwMTkwNTI1MTYwOTQwWjALBgNVHQ8EBAMCAQYwHwYDVR0jBBgwFoAU8Bdi
+E1U9s/8KAGv7UISX8+1i0BowHQYDVR0OBBYEFPAXYhNVPbP/CgBr+1CEl/PtYtAa
+MAwGA1UdEwQFMAMBAf8wGQYJKoZIhvZ9B0EABAwwChsEVjQuMAMCBJAwDQYJKoZI
+hvcNAQEFBQADgYEAkNwwAvpkdMKnCqV8IY00F6j7Rw7/JXyNEwr75Ji174z4xRAN
+95K+8cPV1ZVqBLssziY2ZcgxxufuP+NXdYR6Ee9GTxj005i7qIcyunL2POI9n9cd
+2cNgQ4xYDiKWL2KjLB+6rQXvqzJ4h6BUcxm1XAX5Uj5tLUUL9wqT6u0G+bI=
+-----END CERTIFICATE-----

@@ -0,0 +1,57 @@
+This CA certificate is for verifying HTTPS connection to;
+  - https://s3.amazon.com/ (prepared by AWS)
+
+Certificate:
+    Data:
+        Version: 1 (0x0)
+        Serial Number:
+            7d:d9:fe:07:cf:a8:1e:b7:10:79:67:fb:a7:89:34:c6
+    Signature Algorithm: sha1WithRSAEncryption
+        Issuer: C=US, O=VeriSign, Inc., OU=Class 3 Public Primary Certification Authority - G2, OU=(c) 1998 VeriSign, Inc. - For authorized use only, OU=VeriSign Trust Network
+        Validity
+            Not Before: May 18 00:00:00 1998 GMT
+            Not After : Aug  1 23:59:59 2028 GMT
+        Subject: C=US, O=VeriSign, Inc., OU=Class 3 Public Primary Certification Authority - G2, OU=(c) 1998 VeriSign, Inc. - For authorized use only, OU=VeriSign Trust Network
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (1024 bit)
+                Modulus:
+                    00:cc:5e:d1:11:5d:5c:69:d0:ab:d3:b9:6a:4c:99:
+                    1f:59:98:30:8e:16:85:20:46:6d:47:3f:d4:85:20:
+                    84:e1:6d:b3:f8:a4:ed:0c:f1:17:0f:3b:f9:a7:f9:
+                    25:d7:c1:cf:84:63:f2:7c:63:cf:a2:47:f2:c6:5b:
+                    33:8e:64:40:04:68:c1:80:b9:64:1c:45:77:c7:d8:
+                    6e:f5:95:29:3c:50:e8:34:d7:78:1f:a8:ba:6d:43:
+                    91:95:8f:45:57:5e:7e:c5:fb:ca:a4:04:eb:ea:97:
+                    37:54:30:6f:bb:01:47:32:33:cd:dc:57:9b:64:69:
+                    61:f8:9b:1d:1c:89:4f:5c:67
+                Exponent: 65537 (0x10001)
+    Signature Algorithm: sha1WithRSAEncryption
+         51:4d:cd:be:5c:cb:98:19:9c:15:b2:01:39:78:2e:4d:0f:67:
+         70:70:99:c6:10:5a:94:a4:53:4d:54:6d:2b:af:0d:5d:40:8b:
+         64:d3:d7:ee:de:56:61:92:5f:a6:c4:1d:10:61:36:d3:2c:27:
+         3c:e8:29:09:b9:11:64:74:cc:b5:73:9f:1c:48:a9:bc:61:01:
+         ee:e2:17:a6:0c:e3:40:08:3b:0e:e7:eb:44:73:2a:9a:f1:69:
+         92:ef:71:14:c3:39:ac:71:a7:91:09:6f:e4:71:06:b3:ba:59:
+         57:26:79:00:f6:f8:0d:a2:33:30:28:d4:aa:58:a0:9d:9d:69:
+         91:fd
+
+-----BEGIN CERTIFICATE-----
+MIIDAjCCAmsCEH3Z/gfPqB63EHln+6eJNMYwDQYJKoZIhvcNAQEFBQAwgcExCzAJ
+BgNVBAYTAlVTMRcwFQYDVQQKEw5WZXJpU2lnbiwgSW5jLjE8MDoGA1UECxMzQ2xh
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+F6YM40AIOw7n60RzKprxaZLvcRTDOaxxp5EJb+RxBrO6WVcmeQD2+A2iMzAo1KpY
+oJ2daZH9
+-----END CERTIFICATE-----

@@ -0,0 +1,45 @@
+-----BEGIN CERTIFICATE-----
+MIID0DCCArigAwIBAgIBADANBgkqhkiG9w0BAQUFADA8MQswCQYDVQQGDAJKUDES
+MBAGA1UECgwJSklOLkdSLkpQMQwwCgYDVQQLDANSUlIxCzAJBgNVBAMMAkNBMB4X
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+d/xgcK06UVQRL/HbEYGiQL056mc=
+-----END CERTIFICATE-----
+
+-----BEGIN CERTIFICATE-----
+MIIDaDCCAlCgAwIBAgIBATANBgkqhkiG9w0BAQUFADA8MQswCQYDVQQGDAJKUDES
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+uY/bPeOBYiVsOYVe
+-----END CERTIFICATE-----

@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----
+MIIC/zCCAeegAwIBAgIBATANBgkqhkiG9w0BAQUFADA/MQswCQYDVQQGDAJKUDES
+MBAGA1UECgwJSklOLkdSLkpQMQwwCgYDVQQLDANSUlIxDjAMBgNVBAMMBVN1YkNB
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+rRlQ
+-----END CERTIFICATE-----

@@ -0,0 +1,15 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIICXQIBAAKBgQDRSU8Vqrqd51fXbCQJLqflml5zzSM3KQAN6jBmQyUybH2vA7u2
+cUz9FySuZhE7bQa5+9dXCcQLj9yo6p1vUr7WfZWNrFyemY+trDeS8Bt1VXtuXSNv
+MkdRLGx4yeWY3/bZoIDAumpudncbh27ef7x6OJ4CbihP1PnnhkYrzJ+oBQIDAQAB
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+LjLpLLOrgUxqpzLWe++EwSLwK2//dHO+SPsQJ4xsyQJy
+-----END RSA PRIVATE KEY-----

@@ -52,6 +52,8 @@ def test_initialize
       fp.puts ":gempath:"
       fp.puts "- /usr/ruby/1.8/lib/ruby/gems/1.8"
       fp.puts "- /var/ruby/1.8/gem_home"
+      fp.puts ":ssl_verify_mode: 0"
+      fp.puts ":ssl_ca_cert: /etc/ssl/certs"
     end
 
     util_config_file
@@ -65,6 +67,8 @@ def test_initialize
     assert_equal '--wrappers', @cfg[:install]
     assert_equal(['/usr/ruby/1.8/lib/ruby/gems/1.8', '/var/ruby/1.8/gem_home'],
                  @cfg.path)
+    assert_equal 0, @cfg.ssl_verify_mode
+    assert_equal '/etc/ssl/certs', @cfg.ssl_ca_cert
   end
 
   def test_initialize_handle_arguments_config_file
@@ -291,6 +295,22 @@ def test_load_api_keys_from_config
                   :other => 'a5fdbb6ba150cbb83aad2bb2fede64c'}, @cfg.api_keys)
   end
 
+  def test_load_ssl_verify_mode_from_config
+    File.open @temp_conf, 'w' do |fp|
+      fp.puts ":ssl_verify_mode: 1"
+    end
+    util_config_file
+    assert_equal(1, @cfg.ssl_verify_mode)
+  end
+
+  def test_load_ssl_ca_cert_from_config
+    File.open @temp_conf, 'w' do |fp|
+      fp.puts ":ssl_ca_cert: /home/me/certs"
+    end
+    util_config_file
+    assert_equal('/home/me/certs', @cfg.ssl_ca_cert)
+  end
+
   def util_config_file(args = @cfg_args)
     @cfg = Gem::ConfigFile.new args
   end

@@ -1,6 +1,7 @@
 require 'rubygems/test_case'
 require 'ostruct'
 require 'webrick'
+require 'webrick/https'
 require 'rubygems/remote_fetcher'
 require 'rubygems/format'
 
@@ -73,6 +74,8 @@ class TestGemRemoteFetcher < Gem::TestCase
   PROXY_PORT = process_based_port + 100 + $1.to_i * 100 + $2.to_i * 10 + $3.to_i
   SERVER_PORT = process_based_port + 200 + $1.to_i * 100 + $2.to_i * 10 + $3.to_i
 
+  DIR = File.expand_path(File.dirname(__FILE__))
+
   def setup
     super
     self.class.start_servers
@@ -740,6 +743,53 @@ def test_yaml_error_on_size
     end
   end
 
+  def test_ssl_connection
+    ssl_server = self.class.start_ssl_server
+    temp_ca_cert = File.join(DIR, 'ca_cert.pem')
+    with_configured_fetcher(":ssl_ca_cert: #{temp_ca_cert}") do |fetcher|
+      fetcher.fetch_path("https://localhost:#{ssl_server.config[:Port]}/yaml")
+    end
+  end
+
+  def test_do_not_allow_insecure_ssl_connection_by_default
+    ssl_server = self.class.start_ssl_server
+    with_configured_fetcher do |fetcher|
+      assert_raises Gem::RemoteFetcher::FetchError do
+        fetcher.fetch_path("https://localhost:#{ssl_server.config[:Port]}/yaml")
+      end
+    end
+  end
+
+  def test_ssl_connection_allow_verify_none
+    ssl_server = self.class.start_ssl_server
+    with_configured_fetcher(":ssl_verify_mode: 0") do |fetcher|
+      fetcher.fetch_path("https://localhost:#{ssl_server.config[:Port]}/yaml")
+    end
+  end
+
+  def test_do_not_follow_insecure_redirect
+    ssl_server = self.class.start_ssl_server
+    temp_ca_cert = File.join(DIR, 'ca_cert.pem'),
+    with_configured_fetcher(":ssl_ca_cert: #{temp_ca_cert}") do |fetcher|
+      assert_raises Gem::RemoteFetcher::FetchError do
+        fetcher.fetch_path("https://localhost:#{ssl_server.config[:Port]}/insecure_redirect?to=#{@server_uri}")
+      end
+    end
+  end
+
+  def with_configured_fetcher(config_str = nil, &block)
+    if config_str
+      temp_conf = File.join @tempdir, '.gemrc'
+      File.open temp_conf, 'w' do |fp|
+        fp.puts config_str
+      end
+      Gem.configuration = Gem::ConfigFile.new %W[--config-file #{temp_conf}]
+    end
+    yield Gem::RemoteFetcher.new
+  ensure
+    Gem.configuration = nil
+  end
+
   def util_stub_connection_for hash
     def @fetcher.connection= conn
       @conn = conn
@@ -802,6 +852,49 @@ def start_servers
       @enable_zip = false
     end
 
+    DIR = File.expand_path(File.dirname(__FILE__))
+    DH_PARAM = OpenSSL::PKey::DH.new(128)
+
+    def start_ssl_server(config = {})
+      null_logger = NilLog.new
+      server = WEBrick::HTTPServer.new({
+        :Port => 0,
+        :Logger => null_logger,
+        :AccessLog => [],
+        :SSLEnable => true,
+        :SSLCACertificateFile => File.join(DIR, 'ca_cert.pem'),
+        :SSLCertificate => cert('ssl_cert.pem'),
+        :SSLPrivateKey => key('ssl_key.pem'),
+        :SSLVerifyClient => nil,
+        :SSLCertName => nil
+      }.merge(config))
+      server.mount_proc("/yaml") { |req, res|
+        res.body = "--- true\n"
+      }
+      server.mount_proc("/insecure_redirect") { |req, res|
+        res.set_redirect(WEBrick::HTTPStatus::MovedPermanently, req.query['to'])
+      }
+      server.ssl_context.tmp_dh_callback = proc { DH_PARAM }
+      t = Thread.new do
+        begin
+          server.start
+        rescue Exception => ex
+          abort ex.message
+          puts "ERROR during server thread: #{ex.message}"
+        end
+      end
+      while server.status != :Running
+        sleep 0.1
+        unless t.alive?
+          t.join
+          raise
+        end
+      end
+      server
+    end
+
+
+
     private
 
     def start_server(port, data)
@@ -844,6 +937,14 @@ def start_server(port, data)
       end
       sleep 0.2                 # Give the servers time to startup
     end
+
+    def cert(filename)
+      OpenSSL::X509::Certificate.new(File.read(File.join(DIR, filename)))
+    end
+
+    def key(filename)
+      OpenSSL::PKey::RSA.new(File.read(File.join(DIR, filename)))
+    end
   end
 
   def test_correct_for_windows_path