CVE-2017-9063 (published 2017-05-18T14:29Z)

In WordPress before 4.7.5, a cross-site scripting (XSS) vulnerability related to the Customizer exists, involving an invalid customization session.

Severity: MEDIUM
CVSS v2 base score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
CVSS v3 base score: 6.1, MEDIUM (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

Weakness information:
cwe_id: CWE-79
cwe_name: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
description: The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
extended_description: 
            Cross-site scripting (XSS) vulnerabilities occur when:
            
               Untrusted data enters a web application, typically from a web request.
               The web application dynamically generates a web page that contains this untrusted data.
               During page generation, the application does not prevent the data from containing content that is executable by a web browser, such as JavaScript, HTML tags, HTML attributes, mouse events, Flash, ActiveX, etc.
               A victim visits the generated web page through a web browser, which contains malicious script that was injected using the untrusted data.
               Since the script comes from a web page that was sent by the web server, the victim's web browser executes the malicious script in the context of the web server's domain.
               This effectively violates the intention of the web browser's same-origin policy, which states that scripts in one domain should not be able to access resources or run code in a different domain.
            
            There are three main kinds of XSS:
            
               
                  Type 1: Reflected XSS (or Non-Persistent) - 
         			The server reads data directly from the HTTP request and reflects it back in the HTTP response. Reflected XSS exploits occur when an attacker causes a victim to supply dangerous content to a vulnerable web application, which is then reflected back to the victim and executed by the web browser. The most common mechanism for delivering malicious content is to include it as a parameter in a URL that is posted publicly or e-mailed directly to the victim. URLs constructed in this manner constitute the core of many phishing schemes, whereby an attacker convinces a victim to visit a URL that refers to a vulnerable site. After the site reflects the attacker's content back to the victim, the content is executed by the victim's browser.
               
                  Type 2: Stored XSS (or Persistent) - 
               The application stores dangerous data in a database, message forum, visitor log, or other trusted data store. At a later time, the dangerous data is subsequently read back into the application and included in dynamic content. From an attacker's perspective, the optimal place to inject malicious content is in an area that is displayed to either many users or particularly interesting users. Interesting users typically have elevated privileges in the application or interact with sensitive data that is valuable to the attacker. If one of these users executes malicious content, the attacker may be able to perform privileged operations on behalf of the user or gain access to sensitive data belonging to the user. For example, the attacker might inject XSS into a log message, which might not be handled properly when an administrator views the logs.
            
               
                  Type 0: DOM-Based XSS - 
               In DOM-based XSS, the client performs the injection of XSS into the page; in the other types, the server performs the injection. DOM-based XSS generally involves server-controlled, trusted script that is sent to the client, such as Javascript that performs sanity checks on a form before the user submits it. If the server-supplied script processes user-supplied data and then injects it back into the web page (such as with dynamic HTML), then DOM-based XSS is possible.
            
            
            Once the malicious script is injected, the attacker can perform a variety of malicious activities. The attacker could transfer private information, such as cookies that may include session information, from the victim's machine to the attacker. The attacker could send malicious requests to a web site on behalf of the victim, which could be especially dangerous to the site if the victim has administrator privileges to manage that site. Phishing attacks could be used to emulate trusted web sites and trick the victim into entering a password, allowing the attacker to compromise the victim's account on that web site. Finally, the script could exploit a vulnerability in the web browser itself possibly taking over the victim's machine, sometimes referred to as "drive-by hacking."
            In many cases, the attack can be launched without the victim even being aware of it. Even with careful users, attackers frequently use a variety of methods to encode the malicious portion of the attack, such as URL encoding or Unicode, so the request looks less suspicious.
         
         

Fix information:
repo_url: https://github.com/WordPress/WordPress
commit_details: repo_url: https://github.com/WordPress/WordPress
author: Dominik Schilling
author_date: 2017-05-16 12:07:43+00:00
msg: Customize: Igore invalid customization sessions.
Built from https://develop.svn.wordpress.org/trunk@40704


git-svn-id: http://core.svn.wordpress.org/trunk@40567 1a063a9b-81f0-0310-95a4-ce76da25c4cd
repository: repo_url: https://github.com/WordPress/WordPress
repo_name: WordPress/WordPress
description: WordPress, Git-ified. This repository is just a mirror of the WordPress subversion repository. Please do not send pull requests. Submit pull requests to https://github.com/WordPress/wordpress-develop and patches to https://core.trac.wordpress.org/ instead.
repo_language: PHP
owner: WordPress
file_changes: filename: customize.php
change_type: ModificationType.MODIFY
diff: @@ -155,7 +155,7 @@ do_action( 'customize_controls_print_scripts' );
 			<div id="customize-info" class="accordion-section customize-info">
 				<div class="accordion-section-title">
 					<span class="preview-notice"><?php
-						echo sprintf( __( 'You are customizing %s' ), '<strong class="panel-title site-title">' . get_bloginfo( 'name' ) . '</strong>' );
+						echo sprintf( __( 'You are customizing %s' ), '<strong class="panel-title site-title">' . get_bloginfo( 'name', 'display' ) . '</strong>' );
 					?></span>
 					<button type="button" class="customize-help-toggle dashicons dashicons-editor-help" aria-expanded="false"><span class="screen-reader-text"><?php _e( 'Help' ); ?></span></button>
 				</div>

programming_language: PHP
filename: customize-controls.js
change_type: ModificationType.MODIFY
diff: @@ -4580,6 +4580,16 @@
 			}
 		});
 
+		// Ensure preview nonce is included with every customized request, to allow post data to be read.
+		$.ajaxPrefilter( function injectPreviewNonce( options ) {
+			if ( ! /wp_customize=on/.test( options.data ) ) {
+				return;
+			}
+			options.data += '&' + $.param({
+				customize_preview_nonce: api.settings.nonce.preview
+			});
+		});
+
 		// Refresh the nonces if the preview sends updated nonces over.
 		api.previewer.bind( 'nonce', function( nonce ) {
 			$.extend( this.nonce, nonce );

programming_language: JavaScript
filename: customize-controls.min.js
change_type: ModificationType.MODIFY
diff: @@ -1,3 +1,3 @@
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c,d=this,e=d.contentContainer,g=e.closest(".wp-full-overlay"),h=e.closest(".wp-full-overlay-sidebar-content"),i=d.headContainer.find(".accordion-section-title"),j=e.find(".customize-panel-back"),k=d.sections();a&&!e.hasClass("current-panel")?(f.section.each(function(a){d.id!==a.panel()&&a.collapse({duration:0})}),f.panel.each(function(a){d!==a&&a.collapse({duration:0})}),d.params.autoExpandSoleSection&&1===k.length&&k[0].active.get()?(e.addClass("current-panel 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a,c=this;a=0!==b("#tmpl-"+c.templateSelector+"-content").length?wp.template(c.templateSelector+"-content"):wp.template("customize-panel-default-content"),a&&c.headContainer&&c.contentContainer.html(a(c.params))}}),f.Control=f.Class.extend({defaultActiveArguments:{duration:"fast",completeCallback:b.noop},initialize:function(a,c){var d,e,g,h=this;h.params={},b.extend(h,c||{}),h.id=a,h.selector="#customize-control-"+a.replace(/\]/g,"").replace(/\[/g,"-"),h.templateSelector="customize-control-"+h.params.type+"-content",h.container=b(h.params.content?h.params.content:h.selector),h.deferred={embedded:new b.Deferred},h.section=new f.Value,h.priority=new f.Value,h.active=new f.Value,h.activeArgumentsQueue=[],h.notifications=new f.Values({defaultConstructor:f.Notification}),h.elements=[],d=h.container.find("[data-customize-setting-link]"),e={},d.each(function(){var a,c=b(this);if(c.is(":radio")){if(a=c.prop("name"),e[a])return;e[a]=!0,c=d.filter('[name="'+a+'"]')}f(c.data("customizeSettingLink"),function(a){var b=new f.Element(c);h.elements.push(b),b.sync(a),b.set(a())})}),h.active.bind(function(a){var c=h.activeArgumentsQueue.shift();c=b.extend({},h.defaultActiveArguments,c),h.onChangeActive(a,c)}),h.section.set(h.params.section),h.priority.set(isNaN(h.params.priority)?10:h.params.priority),h.active.set(h.params.active),f.utils.bubbleChildValueChanges(h,["section","priority","active"]),g=b.map(h.params.settings,function(a){return a}),0===g.length?(h.setting=null,h.settings={},h.embed()):f.apply(f,g.concat(function(){var a;h.settings={};for(a in h.params.settings)h.settings[a]=f(h.params.settings[a]);h.setting=h.settings["default"]||null,_.each(h.settings,function(a){a.notifications.bind("add",function(b){var c,d,e;d=a.id+":"+b.code,e=_.extend({},b,{setting:a.id}),c=new f.Notification(d,e),h.notifications.add(c.code,c)}),a.notifications.bind("remove",function(b){h.notifications.remove(a.id+":"+b.code)})}),h.embed()})),h.deferred.embedded.done(function(){var a=_.debounce(function(){h.renderNotifications()});h.notifications.bind("add",function(b){wp.a11y.speak(b.message,"assertive"),a()}),h.notifications.bind("remove",a),h.renderNotifications(),h.ready()})},embed:function(){var a,b=this;a=function(a){var c;a&&f.section(a,function(a){a.deferred.embedded.done(function(){c=a.contentContainer.is("ul")?a.contentContainer:a.contentContainer.find("ul:first"),b.container.parent().is(c)||(c.append(b.container),b.renderContent()),b.deferred.embedded.resolve()})})},b.section.bind(a),a(b.section.get())},ready:function(){var a,c=this;"dropdown-pages"===c.params.type&&c.params.allow_addition&&(a=c.container.find(".new-content-item"),a.hide(),c.container.on("click",".add-new-toggle",function(c){b(c.currentTarget).slideUp(180),a.slideDown(180),a.find(".create-item-input").focus()}),c.container.on("click",".add-content",function(){c.addNewPage()}),c.container.on("keyup",".create-item-input",function(a){13===a.which&&c.addNewPage()}))},getNotificationsContainerElement:function(){var a,c,d=this;return c=d.container.find(".customize-control-notifications-container:first"),c.length?c:(c=b('<div class="customize-control-notifications-container"></div>'),d.container.hasClass("customize-control-nav_menu_item")?d.container.find(".menu-item-settings:first").prepend(c):d.container.hasClass("customize-control-widget_form")?d.container.find(".widget-inside:first").prepend(c):(a=d.container.find(".customize-control-title"),a.length?a.after(c):d.container.prepend(c)),c)},renderNotifications:function(){var a,c,d=this,e=!1;a=d.getNotificationsContainerElement(),a&&a.length&&(c=[],d.notifications.each(function(a){c.push(a),"error"===a.type&&(e=!0)}),0===c.length?a.stop().slideUp("fast"):a.stop().slideDown("fast",null,function(){b(this).css("height","auto")}),d.notificationsTemplate||(d.notificationsTemplate=wp.template("customize-control-notifications")),d.container.toggleClass("has-notifications",0!==c.length),d.container.toggleClass("has-error",e),a.empty().append(b.trim(d.notificationsTemplate({notifications:c,altNotice:Boolean(d.altNotice)}))))},expand:function(a){f.section(this.section()).expand(a)},focus:d,onChangeActive:function(a,c){return c.unchanged?void(c.completeCallback&&c.completeCallback()):void(b.contains(document,this.container[0])?a?this.container.slideDown(c.duration,c.completeCallback):this.container.slideUp(c.duration,c.completeCallback):(this.container.toggle(a),c.completeCallback&&c.completeCallback()))},toggle:function(a){return this.onChangeActive(a,this.defaultActiveArguments)},activate:c.prototype.activate,deactivate:c.prototype.deactivate,_toggleActive:c.prototype._toggleActive,dropdownInit:function(){var a=this,b=this.container.find(".dropdown-status"),c=this.params,d=!1,e=function(a){"string"==typeof a&&c.statuses&&c.statuses[a]?b.html(c.statuses[a]).show():b.hide()};this.container.on("click keydown",".dropdown",function(b){f.utils.isKeydownButNotEnterEvent(b)||(b.preventDefault(),d||a.container.toggleClass("open"),a.container.hasClass("open")&&a.container.parent().parent().find("li.library-selected").focus(),d=!0,setTimeout(function(){d=!1},400))}),this.setting.bind(e),e(this.setting())},renderContent:function(){var a,c=this;0!==b("#tmpl-"+c.templateSelector).length&&(a=wp.template(c.templateSelector),a&&c.container&&c.container.html(a(c.params)))},addNewPage:function(){var a,c,d,e,g,h,i=this;if("dropdown-pages"===i.params.type&&i.params.allow_addition&&f.Menus){if(c=i.container.find(".add-new-toggle"),d=i.container.find(".new-content-item"),e=i.container.find(".create-item-input"),g=e.val(),h=i.container.find("select"),!g)return void e.addClass("invalid");e.removeClass("invalid"),e.attr("disabled","disabled"),a=f.Menus.insertAutoDraftPost({post_title:g,post_type:"page"}),a.done(function(a){var e,j,k;e=new f.Menus.AvailableItemModel({id:"post-"+a.post_id,title:g,type:"post_type",type_label:f.Menus.data.l10n.page_label,object:"page",object_id:a.post_id,url:a.url}),f.Menus.availableMenuItemsPanel.collection.add(e),j=b("#available-menu-items-post_type-page").find(".available-menu-items-list"),k=wp.template("available-menu-item"),j.prepend(k(e.attributes)),h.focus(),i.setting.set(String(a.post_id)),d.slideUp(180),c.slideDown(180)}),a.always(function(){e.val("").removeAttr("disabled")})}}}),f.ColorControl=f.Control.extend({ready:function(){var a,b=this,c="hue"===this.params.mode,d=!1;c?(a=this.container.find(".color-picker-hue"),a.val(b.setting()).wpColorPicker({change:function(a,c){d=!0,b.setting(c.color.h()),d=!1}})):(a=this.container.find(".color-picker-hex"),a.val(b.setting()).wpColorPicker({change:function(){d=!0,b.setting.set(a.wpColorPicker("color")),d=!1},clear:function(){d=!0,b.setting.set(""),d=!1}})),b.setting.bind(function(b){d||(a.val(b),a.wpColorPicker("color",b))}),b.container.on("keydown",function(c){var d;27===c.which&&(d=b.container.find(".wp-picker-container"),d.hasClass("wp-picker-active")&&(a.wpColorPicker("close"),b.container.find(".wp-color-result").focus(),c.stopPropagation()))})}}),f.MediaControl=f.Control.extend({ready:function(){function a(a){var d=b.Deferred();c.extended(f.UploadControl)?d.resolve():(a=parseInt(a,10),_.isNaN(a)||a<=0?(delete c.params.attachment,d.resolve()):c.params.attachment&&c.params.attachment.id===a&&d.resolve()),"pending"===d.state()&&wp.media.attachment(a).fetch().done(function(){c.params.attachment=this.attributes,d.resolve(),wp.customize.previewer.send(c.setting.id+"-attachment-data",this.attributes)}),d.done(function(){c.renderContent()})}var c=this;_.bindAll(c,"restoreDefault","removeFile","openFrame","select","pausePlayer"),c.container.on("click keydown",".upload-button",c.openFrame),c.container.on("click keydown",".upload-button",c.pausePlayer),c.container.on("click keydown",".thumbnail-image img",c.openFrame),c.container.on("click keydown",".default-button",c.restoreDefault),c.container.on("click keydown",".remove-button",c.pausePlayer),c.container.on("click keydown",".remove-button",c.removeFile),c.container.on("click keydown",".remove-button",c.cleanupPlayer),f.section(c.section()).container.on("expanded",function(){c.player&&c.player.setControlsSize()}).on("collapsed",function(){c.pausePlayer()}),a(c.setting()),c.setting.bind(a)},pausePlayer:function(){this.player&&this.player.pause()},cleanupPlayer:function(){this.player&&wp.media.mixin.removePlayer(this.player)},openFrame:function(a){f.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.frame||this.initFrame(),this.frame.open())},initFrame:function(){this.frame=wp.media({button:{text:this.params.button_labels.frame_button},states:[new wp.media.controller.Library({title:this.params.button_labels.frame_title,library:wp.media.query({type:this.params.mime_type}),multiple:!1,date:!1})]}),this.frame.on("select",this.select)},select:function(){var a,b=this.frame.state().get("selection").first().toJSON(),c=window._wpmejsSettings||{};this.params.attachment=b,this.setting(b.id),a=this.container.find("audio, video").get(0),a?this.player=new MediaElementPlayer(a,c):this.cleanupPlayer()},restoreDefault:function(a){f.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.params.attachment=this.params.defaultAttachment,this.setting(this.params.defaultAttachment.url))},removeFile:function(a){f.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.params.attachment={},this.setting(""),this.renderContent())}}),f.UploadControl=f.MediaControl.extend({select:function(){var a,b=this.frame.state().get("selection").first().toJSON(),c=window._wpmejsSettings||{};this.params.attachment=b,this.setting(b.url),a=this.container.find("audio, video").get(0),a?this.player=new MediaElementPlayer(a,c):this.cleanupPlayer()},success:function(){},removerVisibility:function(){}}),f.ImageControl=f.UploadControl.extend({thumbnailSrc:function(){}}),f.BackgroundControl=f.UploadControl.extend({ready:function(){f.UploadControl.prototype.ready.apply(this,arguments)},select:function(){f.UploadControl.prototype.select.apply(this,arguments),wp.ajax.post("custom-background-add",{nonce:_wpCustomizeBackground.nonces.add,wp_customize:"on",customize_theme:f.settings.theme.stylesheet,attachment_id:this.params.attachment.id})}}),f.BackgroundPositionControl=f.Control.extend({ready:function(){var a,c=this;c.container.on("change",'input[name="background-position"]',function(){var a=b(this).val().split(" ");c.settings.x(a[0]),c.settings.y(a[1])}),a=_.debounce(function(){var a,b,d,e;a=c.settings.x.get(),b=c.settings.y.get(),e=String(a)+" 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a=this.frame.state().get("selection").first().toJSON();this.params.width!==a.width||this.params.height!==a.height||this.params.flex_width||this.params.flex_height?this.frame.setState("cropper"):(this.setImageFromAttachment(a),this.frame.close())},onCropped:function(a){this.setImageFromAttachment(a)},calculateImageSelectOptions:function(a,b){var c,d,e,f=b.get("control"),g=!!parseInt(f.params.flex_width,10),h=!!parseInt(f.params.flex_height,10),i=a.get("width"),j=a.get("height"),k=parseInt(f.params.width,10),l=parseInt(f.params.height,10),m=k/l,n=k,o=l;return b.set("canSkipCrop",!f.mustBeCropped(g,h,k,l,i,j)),i/j>m?(l=j,k=l*m):(k=i,l=k/m),c=(i-k)/2,d=(j-l)/2,e={handles:!0,keys:!0,instance:!0,persistent:!0,imageWidth:i,imageHeight:j,minWidth:n>k?k:n,minHeight:o>l?l:o,x1:c,y1:d,x2:k+c,y2:l+d},h===!1&&g===!1&&(e.aspectRatio=k+":"+l),!0===h&&(delete e.minHeight,
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wp.media.controller.SiteIconCropper({imgSelectOptions:this.calculateImageSelectOptions,control:this})]}),this.frame.on("select",this.onSelect,this),this.frame.on("cropped",this.onCropped,this),this.frame.on("skippedcrop",this.onSkippedCrop,this)},onSelect:function(){var a=this.frame.state().get("selection").first().toJSON(),b=this;this.params.width!==a.width||this.params.height!==a.height||this.params.flex_width||this.params.flex_height?this.frame.setState("cropper"):wp.ajax.post("crop-image",{nonce:a.nonces.edit,id:a.id,context:"site-icon",cropDetails:{x1:0,y1:0,width:this.params.width,height:this.params.height,dst_width:this.params.width,dst_height:this.params.height}}).done(function(a){b.setImageFromAttachment(a),b.frame.close()}).fail(function(){b.frame.trigger("content:error:crop")})},setImageFromAttachment:function(a){var c,d,e=["site_icon-32","thumbnail","full"];_.each(e,function(b){d||_.isUndefined(a.sizes[b])||(d=a.sizes[b])}),this.params.attachment=a,this.setting(a.id),d&&(c=b('link[rel="icon"][sizes="32x32"]'),c.attr("href",d.url))},removeFile:function(a){f.utils.isKeydownButNotEnterEvent(a)||(a.preventDefault(),this.params.attachment={},this.setting(""),this.renderContent(),b('link[rel="icon"][sizes="32x32"]').attr("href","/favicon.ico"))}}),f.HeaderControl=f.Control.extend({ready:function(){this.btnRemove=b("#customize-control-header_image .actions .remove"),this.btnNew=b("#customize-control-header_image .actions .new"),_.bindAll(this,"openMedia","removeImage"),this.btnNew.on("click",this.openMedia),this.btnRemove.on("click",this.removeImage),f.HeaderTool.currentHeader=this.getInitialHeaderImage(),new f.HeaderTool.CurrentView({model:f.HeaderTool.currentHeader,el:"#customize-control-header_image .current .container"}),new f.HeaderTool.ChoiceListView({collection:f.HeaderTool.UploadsList=new f.HeaderTool.ChoiceList,el:"#customize-control-header_image .choices .uploaded .list"}),new f.HeaderTool.ChoiceListView({collection:f.HeaderTool.DefaultsList=new f.HeaderTool.DefaultsList,el:"#customize-control-header_image .choices .default .list"}),f.HeaderTool.combinedList=f.HeaderTool.CombinedList=new f.HeaderTool.CombinedList([f.HeaderTool.UploadsList,f.HeaderTool.DefaultsList]),wp.media.controller.Cropper.prototype.defaults.doCropArgs.wp_customize="on",wp.media.controller.Cropper.prototype.defaults.doCropArgs.customize_theme=f.settings.theme.stylesheet},getInitialHeaderImage:function(){if(!f.get().header_image||!f.get().header_image_data||_.contains(["remove-header","random-default-image","random-uploaded-image"],f.get().header_image))return new f.HeaderTool.ImageModel;var a=_.find(_wpCustomizeHeader.uploads,function(a){return a.attachment_id===f.get().header_image_data.attachment_id});return a||(a={url:f.get().header_image,thumbnail_url:f.get().header_image,attachment_id:f.get().header_image_data.attachment_id}),new f.HeaderTool.ImageModel({header:a,choice:a.url.split("/").pop()})},calculateImageSelectOptions:function(a,b){var c,d,e,g,h,i,j=parseInt(_wpCustomizeHeader.data.width,10),k=parseInt(_wpCustomizeHeader.data.height,10),l=!!parseInt(_wpCustomizeHeader.data["flex-width"],10),m=!!parseInt(_wpCustomizeHeader.data["flex-height"],10);return h=a.get("width"),g=a.get("height"),this.headerImage=new f.HeaderTool.ImageModel,this.headerImage.set({themeWidth:j,themeHeight:k,themeFlexWidth:l,themeFlexHeight:m,imageWidth:h,imageHeight:g}),b.set("canSkipCrop",!this.headerImage.shouldBeCropped()),c=j/k,d=h,e=g,d/e>c?(k=e,j=k*c):(j=d,k=j/c),i={handles:!0,keys:!0,instance:!0,persistent:!0,imageWidth:h,imageHeight:g,x1:0,y1:0,x2:j,y2:k},m===!1&&l===!1&&(i.aspectRatio=j+":"+k),m===!1&&(i.maxHeight=k),l===!1&&(i.maxWidth=j),i},openMedia:function(a){var b=_wpMediaViewsL10n;a.preventDefault(),this.frame=wp.media({button:{text:b.selectAndCrop,close:!1},states:[new wp.media.controller.Library({title:b.chooseImage,library:wp.media.query({type:"image"}),multiple:!1,date:!1,priority:20,suggestedWidth:_wpCustomizeHeader.data.width,suggestedHeight:_wpCustomizeHeader.data.height}),new wp.media.controller.Cropper({imgSelectOptions:this.calculateImageSelectOptions})]}),this.frame.on("select",this.onSelect,this),this.frame.on("cropped",this.onCropped,this),this.frame.on("skippedcrop",this.onSkippedCrop,this),this.frame.open()},onSelect:function(){this.frame.setState("cropper")},onCropped:function(a){var b=a.url,c=a.attachment_id,d=a.width,e=a.height;this.setImageFromURL(b,c,d,e)},onSkippedCrop:function(a){var b=a.get("url"),c=a.get("width"),d=a.get("height");this.setImageFromURL(b,a.id,c,d)},setImageFromURL:function(a,b,c,d){var e,g={};g.url=a,g.thumbnail_url=a,g.timestamp=_.now(),b&&(g.attachment_id=b),c&&(g.width=c),d&&(g.height=d),e=new 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a=b(this).closest(".accordion-section"),c=a.find(".customize-panel-description:first");a.hasClass("cannot-expand")||(a.hasClass("open")?(a.toggleClass("open"),c.slideUp(f.Panel.prototype.defaultExpandedArguments.duration),b(this).attr("aria-expanded",!1)):(c.slideDown(f.Panel.prototype.defaultExpandedArguments.duration),a.toggleClass("open"),b(this).attr("aria-expanded",!0)))}),f.previewer=new f.Previewer({container:"#customize-preview",form:"#customize-controls",previewUrl:f.settings.url.preview,allowedUrls:f.settings.url.allowed},{nonce:f.settings.nonce,query:function(a){var b={wp_customize:"on",customize_theme:f.settings.theme.stylesheet,nonce:this.nonce.preview,customize_changeset_uuid:f.settings.changeset.uuid};return b.customized=JSON.stringify(f.dirtyValues({unsaved:a&&a.excludeCustomizedSaved})),b},save:function(c){function d(a){n[a.id]=!0}var e,g,i,j=this,k=b.Deferred(),l="publish",m=f.state("processing"),n={},o=[];return 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c,d=f.settingConstructor[b.type]||f.Setting;c=new d(a,b.value,{transport:b.transport,previewer:f.previewer,dirty:!!b.dirty}),f.add(a,c)}),b.each(f.settings.panels,function(a,b){var c,d=f.panelConstructor[b.type]||f.Panel;c=new d(a,{params:b}),f.panel.add(a,c)}),b.each(f.settings.sections,function(a,b){var c,d=f.sectionConstructor[b.type]||f.Section;c=new d(a,{params:b}),f.section.add(a,c)}),b.each(f.settings.controls,function(a,b){var c,d=f.controlConstructor[b.type]||f.Control;c=new d(a,{params:b,previewer:f.previewer}),f.control.add(a,c)}),_.each(["panel","section","control"],function(a){var b=f.settings.autofocus[a];b&&f[a](b,function(a){a.deferred.embedded.done(function(){f.previewer.deferred.active.done(function(){a.focus()})})})}),f.bind("ready",f.reflowPaneContents),b([f.panel,f.section,f.control]).each(function(a,b){var c=_.debounce(f.reflowPaneContents,f.settings.timeouts.reflowPaneContents);b.bind("add",c),b.bind("change",c),b.bind("remove",c)}),function(){var a,d=new 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e=f(b);e&&e.set(d[a][c])})},h=a.setting.get(),e(h),a.setting.bind("change",function(a){e(a),"custom"!==a&&g(a)})}),f.control("background_repeat",function(a){a.elements[0].unsync(f("background_repeat")),a.element=new f.Element(a.container.find("input")),a.element.set("no-repeat"!==a.setting()),a.element.bind(function(b){a.setting.set(b?"repeat":"no-repeat")}),a.setting.bind(function(b){a.element.set("no-repeat"!==b)})}),f.control("background_attachment",function(a){a.elements[0].unsync(f("background_attachment")),a.element=new f.Element(a.container.find("input")),a.element.set("fixed"!==a.setting()),a.element.bind(function(b){a.setting.set(b?"scroll":"fixed")}),a.setting.bind(function(b){a.element.set("fixed"!==b)})}),f.control("display_header_text",function(a){var b="";a.elements[0].unsync(f("header_textcolor")),a.element=new f.Element(a.container.find("input")),a.element.set("blank"!==a.setting()),a.element.bind(function(c){c||(b=f("header_textcolor").get()),a.setting.set(c?b:"blank")}),a.setting.bind(function(b){a.element.set("blank"!==b)})}),f("show_on_front","page_on_front",function(a,b){var c=function(){"page"===a()&&parseInt(b(),10)>0&&f.previewer.previewUrl.set(f.settings.url.home)};a.bind(c),b.bind(c)}),f("page_for_posts",function(a){a.bind(function(a){a=parseInt(a,10),a>0&&f.previewer.previewUrl.set(f.settings.url.home+"?page_id="+a)})}),f.control("custom_css",function(a){a.deferred.embedded.done(function(){var b=a.container.find("textarea"),c=b[0];b.on("blur",function(){b.data("next-tab-blurs",!1)}),b.on("keydown",function(a){var d,e,f,g=9,h=27;return h===a.keyCode?void(b.data("next-tab-blurs")||(b.data("next-tab-blurs",!0),a.stopPropagation())):void(g!==a.keyCode||a.ctrlKey||a.altKey||a.shiftKey||b.data("next-tab-blurs")||(d=c.selectionStart,e=c.selectionEnd,f=c.value,d>=0&&(c.value=f.substring(0,d).concat("\t",f.substring(e)),b.selectionStart=c.selectionEnd=d+1),a.stopPropagation(),a.preventDefault()))})})}),f.control("header_video",function(a){a.deferred.embedded.done(function(){var b=function(){var b,c=f.section(a.section());c&&(b=c.container.find(".header-video-not-currently-previewable:first"),a.active.get()?b.stop().slideUp("fast"):b.stop().slideDown("fast"))};b(),a.active.bind(b)})}),f.previewer.bind("selective-refresh-setting-validities",function(a){f._handleSettingValidities({settingValidities:a,focusInvalidControl:!1})}),f.previewer.bind("focus-control-for-setting",function(a){var b=[];f.control.each(function(c){var d=_.pluck(c.settings,"id");-1!==_.indexOf(d,a)&&b.push(c)}),b.length&&(b.sort(function(a,b){return a.priority()-b.priority()}),b[0].focus())}),f.previewer.bind("refresh",function(){f.previewer.refresh()}),f.state("paneVisible").bind(function(a){var c;c=window.matchMedia?window.matchMedia("screen and ( max-width: 640px )").matches:b(window).width()<=640,f.state("editShortcutVisibility").set(a||c?"visible":"hidden")}),window.matchMedia&&window.matchMedia("screen and ( max-width: 640px )").addListener(function(){var a=f.state("paneVisible");a.callbacks.fireWith(a,[a.get(),a.get()]);
+}),f.previewer.bind("edit-shortcut-visibility",function(a){f.state("editShortcutVisibility").set(a)}),f.state("editShortcutVisibility").bind(function(a){f.previewer.send("edit-shortcut-visibility",a)}),function(){var a,c,d,e=!1;c=function(){e||(e=!0,f.requestChangesetUpdate().always(function(){e=!1})),d()},d=function(){clearTimeout(a),a=setTimeout(function(){c()},f.settings.timeouts.changesetAutoSave)},d(),b(window).on("blur.wp-customize-changeset-update",function(){c()}),b(window).on("beforeunload.wp-customize-changeset-update",function(){c()})}(),f.trigger("ready")}})}(wp,jQuery);
\ No newline at end of file

programming_language: JavaScript
filename: class-wp-customize-manager.php
change_type: ModificationType.MODIFY
diff: @@ -486,6 +486,24 @@ final class WP_Customize_Manager {
 			$this->wp_die( -1, __( 'Invalid changeset UUID' ) );
 		}
 
+		/*
+		 * Clear incoming post data if the user lacks a CSRF token (nonce). Note that the customizer
+		 * application will inject the customize_preview_nonce query parameter into all Ajax requests.
+		 * For similar behavior elsewhere in WordPress, see rest_cookie_check_errors() which logs out
+		 * a user when a valid nonce isn't present.
+		 */
+		$has_post_data_nonce = (
+			check_ajax_referer( 'preview-customize_' . $this->get_stylesheet(), 'nonce', false )
+			||
+			check_ajax_referer( 'save-customize_' . $this->get_stylesheet(), 'nonce', false )
+			||
+			check_ajax_referer( 'preview-customize_' . $this->get_stylesheet(), 'customize_preview_nonce', false )
+		);
+		if ( ! current_user_can( 'customize' ) || ! $has_post_data_nonce ) {
+			unset( $_POST['customized'] );
+			unset( $_REQUEST['customized'] );
+		}
+
 		/*
 		 * If unauthenticated then require a valid changeset UUID to load the preview.
 		 * In this way, the UUID serves as a secret key. If the messenger channel is present,

programming_language: PHP
filename: version.php
change_type: ModificationType.MODIFY
diff: @@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-beta1-40692';
+$wp_version = '4.8-beta1-40704';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

programming_language: PHP