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954.txt
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[8] [[Web]] における[DFN[[RUBYB[[[混合内容]]]@en[mixed content]]]]とは、
[[HTTPS]] の[[文書]]から参照される [[HTTP]] の[[スクリプト]]のように、
[[安全]]な[[プロトコル]]によってもたらされた文書に含まれる[[安全]]でない[[プロトコル]]由来のデータのことをいいます。
[46] かつては[[混合内容]]も普通に用いられていましたが、
[[TLS]] を用いない[[素のHTTP]]が[[安全]]ではないとの認識が広まるにつれ、
[[混合内容]]が禁止されるようになっていきました。
[47] 現在では[[画像]]を除き、[[混合内容]]は禁止されています。
[[混合内容]]の [[fetch]] は、[[ネットワークエラー]]となります。
* 仕様書
[REFS[
- [25] '''[CITE@en[Mixed Content]] ([TIME[2015-05-17 18:30:14 +09:00]] 版) <https://w3c.github.io/webappsec/specs/mixedcontent/>'''
- [26] [CITE@en-GB-x-hixie[HTML Standard]] ([TIME[2015-05-06 10:42:35 +09:00]] 版) <https://html.spec.whatwg.org/#dom-websocket>
]REFS]
* 適用対象
[FIG(short list)[
- [[Fetch]]
- [[WebSocket]] [SRC[>>26, >>25]]
]FIG]
* 関連
[10] [[SGML]] の[[内容モデル]]における[[混合内容]]とは関係ありません。
* 歴史
[9]
>A [[Web page]] is called [DFN[[[mixed content]]]] if the [[top-level resource]] was retrieved through a [[strongly TLS protected HTTP transaction]], but some dependent [[resources]] were [[retrieved]] through a [[weakly protected]] or [[unprotected HTTP transaction]].
;; [CITE[Web Security Context: User Interface Guidelines]] ([TIME[2010-08-04 20:09:50 +09:00]] 版) <http://www.w3.org/TR/2010/REC-wsc-ui-20100812/#def-mixed-content>
[6] [CITE[Web Security Context: User Interface Guidelines]]
( ([TIME[2010-08-04 11:09:50 +09:00]] 版))
<http://www.w3.org/TR/wsc-ui/#def-mixed-content>
[7] [CITE@en[RFC 6797 - HTTP Strict Transport Security (HSTS)]]
( ([TIME[2014-06-02 05:16:10 +09:00]] 版))
<http://tools.ietf.org/html/rfc6797#section-2.3.1.3>
[1] [CITE@en[Mixed Content]]
( ([TIME[2014-05-30 17:48:27 +09:00]] 版))
<http://projects.mikewest.org/webappsec/specs/mixedcontent/>
[2] [CITE[webappsec/specs/mixedcontent at master · w3c/webappsec]]
( ([TIME[2014-05-31 02:44:56 +09:00]] 版))
<https://github.com/w3c/webappsec/tree/master/specs/mixedcontent>
[3] [CITE@en[Mixed Content]]
( ([TIME[2014-05-30 17:53:42 +09:00]] 版))
<https://w3c.github.io/webappsec/specs/mixedcontent/>
[4] [CITE[Add Mixed Content hook placeholders. Broaden placeholder CSP hook. · f04393a · whatwg/fetch]]
( ([TIME[2014-06-03 03:25:57 +09:00]] 版))
<https://github.com/whatwg/fetch/commit/f04393aa9815dd6dce350d5d058f2bac9c4d606c>
[5] [CITE@en[Bug 22262 – Mixed content / CSP]]
( ([TIME[2014-06-03 03:27:39 +09:00]] 版))
<https://www.w3.org/Bugs/Public/show_bug.cgi?id=22262>
[11] [CITE@en[RFC 6797 - HTTP Strict Transport Security (HSTS)]]
( ([TIME[2014-06-02 05:16:10 +09:00]] 版))
<http://tools.ietf.org/html/rfc6797#section-12.4>
[12] [CITE[Clarify MIX and CSP hooks a bit · 682f68d · whatwg/fetch]]
( ([TIME[2014-06-16 03:02:08 +09:00]] 版))
<https://github.com/whatwg/fetch/commit/682f68d5f0cce7f9637a8f6d9450b514ed276f9b>
[13] [CITE[Put MIX/CSP hooks in switch. Put second MIX check before tainting. · 567fe8a · whatwg/fetch]]
( ([TIME[2014-06-16 03:05:48 +09:00]] 版))
<https://github.com/whatwg/fetch/commit/567fe8ad5f1804efdefa7aa273f2a366b223c70e>
[14] [CITE@en[Mixed Content]]
( ([TIME[2014-07-17 21:32:22 +09:00]] 版))
<http://www.w3.org/TR/2014/WD-mixed-content-20140722/>
[15] [CITE@en[Mixed Content]]
( ([TIME[2014-09-15 23:45:04 +09:00]] 版))
<http://www.w3.org/TR/2014/WD-mixed-content-20140916/>
[16] [CITE@en[Mixed Content]]
( ([TIME[2014-11-13 02:58:19 +09:00]] 版))
<http://www.w3.org/TR/2014/WD-mixed-content-20141113/>
[17] [CITE@en[MIX: Walk the ancestor tree for powerful features. · 8d8d201 · w3c/webappsec]]
( ([TIME[2014-11-21 21:02:00 +09:00]] 版))
<https://github.com/w3c/webappsec/commit/8d8d201a571896267b229e9be0bd5cab222d67a2>
[18] [CITE@en[Fix the order of CSP, HSTS, Mixed Content, and Referrer https://www.w3.o... · b8c2c49 · whatwg/fetch]]
([TIME[2015-01-28 18:20:44 +09:00]] 版)
<https://github.com/whatwg/fetch/commit/b8c2c4964c233cd3616042c04e2c14e0ff25485d>
[19] [CITE@en[Mixed Content]]
( ([TIME[2015-03-13 06:25:45 +09:00]] 版))
<http://www.w3.org/TR/2015/CR-mixed-content-20150317/>
[20] [CITE[Part2 - browsersec - Browser Security Handbook, part 2 - Browser Security Handbook - Google Project Hosting]]
([TIME[2015-03-31 16:49:53 +09:00]] 版)
<https://code.google.com/p/browsersec/wiki/Part2#Protocol-level_encryption_facilities>
[21] [CITE@en[Re: Fetch, MSE, and MIX]]
([[Matthew Wolenetz]] 著, [TIME[2015-04-11 07:24:15 +09:00]] 版)
<https://lists.w3.org/Archives/Public/public-webappsec/2015Apr/0093.html>
[22] [CITE@en[Re: ''''''[''''''MIX'''''']'''''' Modifications to script APIs]]
([[Anne van Kesteren]] 著, [TIME[2014-10-31 16:55:54 +09:00]] 版)
<https://lists.w3.org/Archives/Public/public-webappsec/2014Oct/0228.html>
[23] [CITE@en[Bug 28577 – ''''''[''''''XMLHttpRequest'''''']'''''' Throwing SecurityError on open() call for some kind of simple errors]]
([TIME[2015-05-06 16:40:03 +09:00]] 版)
<https://www.w3.org/Bugs/Public/show_bug.cgi?id=28577>
[FIG(quote)[
[FIGCAPTION[
[24] [CITE@en-GB-x-hixie[HTML Standard]]
([TIME[2015-05-06 10:42:35 +09:00]] 版)
<https://html.spec.whatwg.org/#dom-websocket>
]FIGCAPTION]
> If secure is false but the origin specified by the entry settings object has a scheme component that is itself a secure protocol, e.g. HTTPS, then throw a SecurityError exception and abort these steps.
]FIG]
[27] [CITE@en[MIX: Clarify mixed content "resources" vs "requests". · w3c/webappsec@8732a84]]
([TIME[2015-06-23 12:29:02 +09:00]] 版)
<https://github.com/w3c/webappsec/commit/8732a8402ba535dc7ab05423fec251f8ceb5c8bd>
[28] [CITE@en[MIX: Explicitly update WSC-UI's 'mixed content' definition (h/t @equa… · w3c/webappsec@d9d8246]]
([TIME[2015-06-23 12:29:20 +09:00]] 版)
<https://github.com/w3c/webappsec/commit/d9d8246bf985bcfe78d02dfb6d0c1be6ccb3b56a>
[29] [CITE@en[MIX: Cite a source for the IE4 note. · w3c/webappsec@9b1690c]]
([TIME[2015-06-23 12:29:42 +09:00]] 版)
<https://github.com/w3c/webappsec/commit/9b1690c0432e0320fa861c89ced452bbaf45a5ed>
[30] [CITE@ja-JP[PRB: Security Warning Message Occurs When You Browse to a Page That Contains an IFRAME Through SSL]]
([TIME[2015-06-23 12:30:12 +09:00]] 版)
<https://support2.microsoft.com/default.aspx?scid=kb;EN-US;Q261188>
[31] [CITE@en[Eric Lawrence on Twitter: "@mikewest IE6-IE8 used a modal dialog box. http://t.co/fvK7RiZ9Pi implies that IE4/IE5 had the same. Sadly, I don't have any Win9x VMs."]]
([TIME[2015-06-23 12:30:23 +09:00]] 版)
<https://twitter.com/ericlaw/status/469813922908758016>
[32] [CITE@en[MIX: Clarify "mixed content" vs XML's term. · w3c/webappsec@528162c]]
([TIME[2015-06-23 12:32:01 +09:00]] 版)
<https://github.com/w3c/webappsec/commit/528162c3014ddd19cc6e04570fe19e57292ca0d1>
[FIG(quote)[
[FIGCAPTION[
[33] [CITE@en[RFC 6797 - HTTP Strict Transport Security (HSTS)]]
([TIME[2015-05-03 13:27:16 +09:00]] 版)
<http://tools.ietf.org/html/rfc6797#section-12.4>
]FIGCAPTION]
> "Mixed security context" loads happen when a web application
> resource, fetched by the UA over a secure transport, subsequently
> causes the fetching of one or more other resources without using
> secure transport. This is also generally referred to as "mixed
> content" loads (see Section 5.3 ("Mixed Content") in
> '''['''W3C.REC-wsc-ui-20100812''']''') but should not be confused with the same
> "mixed content" term that is also used in the context of markup
> languages such as XML and HTML.
> NOTE: In order to provide behavioral uniformity across UA
> implementations, the notion of mixed security context will
> require further standardization work, e.g., to define the
> term(s) more clearly and to define specific behaviors with
> respect to it.
]FIG]
[FIG(quote)[
[FIGCAPTION[
[34] [CITE@en[Re: CSP2: Drop 'unsafe-redirect'.]]
([[Brian Smith]] 著, [TIME[2015-07-02 03:24:10 +09:00]] 版)
<https://lists.w3.org/Archives/Public/public-webappsec/2015Jul/0019.html>
]FIGCAPTION]
> When Firefox implemented mixed content blocking, Mozilla treated
> Mozilla-owned sites specially: We assumed that our coworkers would make the
> necessary changes before we shipped, after we helped them understand what
> was necessary, and so we didn't consider breaking any Mozilla site a risk
> for shipping. That strategy worked very well for us (IIRC).
]FIG]
[35] [CITE[Intent to Ship: Strict mixed content checking. - Google Groups]]
([TIME[2015-07-07 11:53:13 +09:00]] 版)
<https://groups.google.com/a/chromium.org/d/msg/blink-dev/MafYMJ3zQw0/DkZdADnS3hMJ>
[36] [CITE@en[MIX: First stab at SW integration. · w3c/webappsec@e577d4d]]
([TIME[2015-07-21 11:22:23 +09:00]] 版)
<https://github.com/w3c/webappsec/commit/e577d4d5746bd33248a7dd4dbe0db515c16f20fb>
[37] [CITE@en[MIX: Dropping the irrelevant CORS mode check from passthrough requests. · w3c/webappsec@72c2dba]]
([TIME[2015-09-07 12:50:28 +09:00]] 版)
<https://github.com/w3c/webappsec/commit/72c2dba9b871a577c2be24101d57f71b63240974>
[38] [CITE@en[MIX: Align 'should block response?' with Fetch. · w3c/webappsec@bbe52ec]]
([TIME[2015-09-07 12:52:06 +09:00]] 版)
<https://github.com/w3c/webappsec/commit/bbe52eca3e5c3b1c726b03c0363bf87bf4c66972>
[39] [CITE@en[MIX: Clarify blocking algorithm for passthrough requests. · w3c/webappsec@1d683bb]]
([TIME[2015-09-07 12:53:22 +09:00]] 版)
<https://github.com/w3c/webappsec/commit/1d683bb8e9e4c60b4e51f40299c5e634eb024170>
[40] [CITE@en[MIX: Target browsing context. · w3c/webappsec@05c7c4c]]
([TIME[2015-09-09 15:43:48 +09:00]] 版)
<https://github.com/w3c/webappsec/commit/05c7c4caf52596baab0acb85083be3a1dd710ae2>
[41] [CITE@en[Mixed Content]]
([TIME[2015-10-01 19:55:17 +09:00]] 版)
<https://w3c.github.io/webappsec-mixed-content/>
[42] [CITE@en[w3c/webappsec-mixed-content]]
([TIME[2015-10-06 23:29:11 +09:00]] 版)
<https://github.com/w3c/webappsec-mixed-content>
[43] [CITE@en[Mixed Content]]
( ([TIME[2015-10-07 05:30:46 +09:00]] 版))
<http://www.w3.org/TR/2015/CR-mixed-content-20151008/>
[44] [CITE@en[Clean up language. · w3c/webappsec-mixed-content@bb27f07]]
([TIME[2015-10-23 11:39:12 +09:00]] 版)
<https://github.com/w3c/webappsec-mixed-content/commit/bb27f07b05e5e385ca4a767f186870d3831cd338>
[45] [CITE@en[Update WebSocket to use Fetch's WebSocket alterations · whatwg/html@3dadbca]]
([TIME[2016-03-28 23:40:07 +09:00]] 版)
<https://github.com/whatwg/html/commit/3dadbcad063a10b586ef52dd4b427aa339048ee7>
[48] [CITE@en[''''''[''''''MIX'''''']'''''' Carveout for `127.0.0.1`?]]
([[Mike West]] 著, [TIME[2016-04-29 16:43:49 +09:00]] 版)
<https://lists.w3.org/Archives/Public/public-webappsec/2016Apr/0044.html>
[FIG(quote)[
[FIGCAPTION[
[49] [CITE@ja[Internet Explorer 7 における HTTPS セキュリティの強化点]]
( ([TIME[2016-05-10 21:06:38 +09:00]]))
<https://msdn.microsoft.com/ja-jp/library/bb250503>
]FIGCAPTION]
> 現象 : HTTPS コンテンツと HTTP コンテンツが混在するページを表示すると、Internet Explorer 6 以前で表示されていたモーダル ダイアログ ボックスではなく、情報バーが表示される。
> 回避策 : HTTPS ページに、HTTP プロトコルによりアドレス指定されるリソースへの参照が埋め込まれていないことを確認します。
]FIG]