{"id":1788,"date":"2010-12-09T13:54:18","date_gmt":"2010-12-09T11:54:18","guid":{"rendered":"http:\/\/www.overalia.com\/blog\/?p=1788"},"modified":"2010-12-09T13:54:18","modified_gmt":"2010-12-09T11:54:18","slug":"problema-de-seguridad-en-el-optimizador-de-sitios-web","status":"publish","type":"post","link":"https:\/\/www.overalia.com\/blog\/problema-de-seguridad-en-el-optimizador-de-sitios-web\/","title":{"rendered":"Problema de seguridad en el optimizador de sitios web"},"content":{"rendered":"<p>Google nos acaba de informar de un posible problema de seguridad con Google Website Optimizer. Parece ser que se aprovecha de una vulnerabilidad en la secuencia de comandos de control del Optimizador de sitios web, un atacante podr\u00eda ejecutar c\u00f3digo malicioso en su sitio mediante un ataque de secuencias de comandos entre sitios (XSS). Este ataque solo se puede llevar a cabo si un sitio web o un navegador ya est\u00e1 en peligro debido a otro ataque. Aunque la probabilidad inmediata de este ataque es baja, recomiendan adoptar medidas para proteger tu sitio.<\/p>\n<p>Los experimentos nuevos no son vulnerables, el error esta corregido pero se deben actualizar los experimentos que se est\u00e1n ejecutando actualmente y los que se crearon antes del d\u00eda 3 de diciembre.<\/p>\n<p>Hay dos formas de actualizar el c\u00f3digo. Puedes detener los experimentos actuales, suprimir las secuencias de comandos anteriores y crear un experimento nuevo, o bien puedes actualizar el c\u00f3digo en el sitio directamente. Se recomienda crear un experimento nuevo, ya que es el m\u00e9todo m\u00e1s simple.<!--more--><\/p>\n<p><strong>Creaci\u00f3n de un experimento nuevo<\/strong><\/p>\n<ul>\n<li>Det\u00e9n los experimentos del Optimizador de sitios web que se est\u00e9n ejecutando actualmente.<\/li>\n<li>Suprime todas las secuencias de comandos del Optimizador de sitios web del sitio.<\/li>\n<li>Crea un experimento nuevo de la forma habitual.<\/li>\n<\/ul>\n<p><strong>Actualizaci\u00f3n directa de la secuencia de comandos de control del Optimizador de sitios web<\/strong><\/p>\n<ul>\n<li>Busca la secuencia de comandos de control en su sitio. Tiene el siguiente aspecto:<\/li>\n<\/ul>\n<p style=\"padding-left: 30px;\">&#8211; Secuencia de comandos de control de prueba A\/B<\/p>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em>&lt;!&#8211; Google Website Optimizer Control Script &#8211;&gt;<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> &lt;script&gt;<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> function utmx_section(){}function utmx(){}<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> (function(){var k=&#8217;XXXXXXXXXX&#8217;,d=document,l=d.location,c=d.cookie;function f(n){<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> if(c){var i=c.indexOf(n+&#8217;=&#8217;);if(i&gt;-1){var j=c.indexOf(&#8216;;&#8217;,i);return c.substring(i+n.<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> length+1,j&lt;0?c.length:j)}}}var x=f(&#8216;__utmx&#8217;),xx=f(&#8216;__utmxx&#8217;),h=l.hash;<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> d.write(&#8216;&lt;sc&#8217;+&#8217;ript src=\u00bb&#8216;+<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> &#8216;http&#8217;+(l.protocol==&#8217;https:&#8217;?&#8217;s:\/\/ssl&#8217;:&#8217;:\/\/www&#8217;)+&#8217;.google-analytics.com&#8217;<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> +&#8217;\/siteopt.js?v=1&amp;utmxkey=&#8217;+k+&#8217;&amp;utmx=&#8217;+(x?x:\u00bb)+&#8217;&amp;utmxx=&#8217;+(xx?xx:\u00bb)+&#8217;&amp;utmxtime=&#8217;<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> +new Date().valueOf()+(h?&#8217;&amp;utmxhash=&#8217;+escape(h.substr(1)):\u00bb)+<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> &#8216;\u00bb charset=\u00bbutf-8&#8243;&gt;&lt;\/sc&#8217;+&#8217;ript&gt;&#8217;)})();<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> &lt;\/script&gt;&lt;script&gt;utmx(\u00aburl\u00bb,&#8217;A\/B&#8217;);&lt;\/script&gt;<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><em> &lt;!&#8211; End of Google Website Optimizer Control Script &#8211;&gt;<\/em><\/span><\/address>\n<address style=\"padding-left: 60px;\"><em><br \/>\n<\/em><\/address>\n<p style=\"padding-left: 30px;\">&#8211; Secuencia de comandos de control de prueba multivariable<\/p>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\">&lt;!&#8211; Google Website Optimizer Control Script &#8211;&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &lt;script&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> function utmx_section(){}function utmx(){}<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> (function(){var k=&#8217;XXXXXXXXXX&#8217;,d=document,l=d.location,c=d.cookie;function f(n){<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> if(c){var i=c.indexOf(n+&#8217;=&#8217;);if(i&gt;-1){var j=c.indexOf(&#8216;;&#8217;,i);return c.substring(i+n.<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> length+1,j&lt;0?c.length:j)}}}var x=f(&#8216;__utmx&#8217;),xx=f(&#8216;__utmxx&#8217;),h=l.hash;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> d.write(&#8216;&lt;sc&#8217;+&#8217;ript src=\u00bb&#8216;+<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &#8216;http&#8217;+(l.protocol==&#8217;https:&#8217;?&#8217;s:\/\/ssl&#8217;:&#8217;:\/\/www&#8217;)+&#8217;.google-analytics.com&#8217;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> +&#8217;\/siteopt.js?v=1&amp;utmxkey=&#8217;+k+&#8217;&amp;utmx=&#8217;+(x?x:\u00bb)+&#8217;&amp;utmxx=&#8217;+(xx?xx:\u00bb)+&#8217;&amp;utmxtime=&#8217;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> +new Date().valueOf()+(h?&#8217;&amp;utmxhash=&#8217;+escape(h.substr(1)):\u00bb)+<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &#8216;\u00bb charset=\u00bbutf-8&#8243;&gt;&lt;\/sc&#8217;+&#8217;ript&gt;&#8217;)})();<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &lt;\/script&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &lt;!&#8211; End of Google Website Optimizer Control Script &#8211;&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><br \/>\n<\/span><\/address>\n<ul>\n<li>Busca lo siguiente en la secuencia de comandos de control: return c.substring(&#8230;<\/li>\n<li>Modifiqua la siguiente l\u00ednea tal como se muestra a continuaci\u00f3n:<br \/>\nANTES: return c.substring(i+n.length+1,j&lt;0?c.length:j)<br \/>\nCORREGIDO: return escape(c.substring(i+n.length+1,j&lt;0?c.length:j))<br \/>\nAseg\u00farese de incluir el par\u00e9ntesis de cierre final \u201c)\u201d<\/li>\n<\/ul>\n<p style=\"padding-left: 30px;\">&#8211; Secuencia de comandos de control A\/B corregida<\/p>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\">&lt;!&#8211; Google Website Optimizer Control Script &#8211;&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &lt;script&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> function utmx_section(){}function utmx(){} (function(){var k=&#8217;XXXXXXXXXX&#8217;,d=document,l=d.location,c=d.cookie;function f(n){ if(c){var i=c.indexOf(n+&#8217;=&#8217;);if(i&gt;-1){var j=c.indexOf(&#8216;;&#8217;,i);<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> return escape(c.substring(i+n.length+1,j&lt;0?c.length:j))}}}<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> var x=f(&#8216;__utmx&#8217;),xx=f(&#8216;__utmxx&#8217;),h=l.hash; d.write(&#8216;&lt;sc&#8217;+&#8217;ript src=\u00bb&#8216;+<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &#8216;http&#8217;+(l.protocol==&#8217;https:&#8217;?&#8217;s:\/\/ssl&#8217;:&#8217;:\/\/www&#8217;)+&#8217;.google-analytics.com&#8217;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> +&#8217;\/siteopt.js?v=1&amp;utmxkey=&#8217;+k+&#8217;&amp;utmx=&#8217;+(x?x:\u00bb)+&#8217;&amp;utmxx=&#8217;+(xx?xx:\u00bb)+&#8217;&amp;utmxtime=&#8217;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> +new Date().valueOf()+(h?&#8217;&amp;utmxhash=&#8217;+escape(h.substr(1)):\u00bb)+<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &#8216;\u00bb charset=\u00bbutf-8&#8243;&gt;&lt;\/sc&#8217;+&#8217;ript&gt;&#8217;)})();<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &lt;\/script&gt;&lt;script&gt;utmx(\u00aburl\u00bb,&#8217;A\/B&#8217;);<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &lt;\/script&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &lt;!&#8211; End of Google Website Optimizer Control Script &#8211;&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><br \/>\n<\/span><\/address>\n<p style=\"padding-left: 30px;\">&#8211; Secuencia de comandos de control multivariable corregida<\/p>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\">&lt;!&#8211; Google Website Optimizer Control Script &#8211;&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &lt;script&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> function utmx_section(){}function utmx(){}<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> (function(){var k=&#8217;XXXXXXXXXX&#8217;,d=document,l=d.location,c=d.cookie;function f(n){<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> if(c){var i=c.indexOf(n+&#8217;=&#8217;);if(i&gt;-1){var j=c.indexOf(&#8216;;&#8217;,i);<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> return escape(c.substring(i+n.length+1,j&lt;0?c.length:j))}}}<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> var x=f(&#8216;__utmx&#8217;),xx=f(&#8216;__utmxx&#8217;),h=l.hash; d.write(&#8216;&lt;sc&#8217;+&#8217;ript src=\u00bb&#8216;+<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &#8216;http&#8217;+(l.protocol==&#8217;https:&#8217;?&#8217;s:\/\/ssl&#8217;:&#8217;:\/\/www&#8217;)+&#8217;.google-analytics.com&#8217;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> +&#8217;\/siteopt.js?v=1&amp;utmxkey=&#8217;+k+&#8217;&amp;utmx=&#8217;+(x?x:\u00bb)+&#8217;&amp;utmxx=&#8217;+(xx?xx:\u00bb)+&#8217;&amp;utmxtime=&#8217;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> +new Date().valueOf()+(h?&#8217;&amp;utmxhash=&#8217;+escape(h.substr(1)):\u00bb)+<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &#8216;\u00bb charset=\u00bbutf-8&#8243;&gt;&lt;\/sc&#8217;+&#8217;ript&gt;&#8217;)})();<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &lt;\/script&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"> &lt;!&#8211; End of Google Website Optimizer Control Script &#8211;&gt;<\/span><\/address>\n<address style=\"padding-left: 60px;\"><span style=\"color: #999999;\"><br \/>\n<\/span><\/address>\n<address style=\"padding-left: 60px;\">El experimento seguir\u00e1 funcionando normalmente despu\u00e9s de haber realizado esta actualizaci\u00f3n. No es necesario detenerlo o reiniciarlo.<\/address>\n","protected":false},"excerpt":{"rendered":"<p>Google nos acaba de informar de un posible problema de seguridad con Google Website Optimizer. Parece ser que se aprovecha de una vulnerabilidad en la secuencia de comandos de control del Optimizador de sitios web, un atacante podr\u00eda ejecutar c\u00f3digo malicioso en su sitio mediante un ataque de secuencias de comandos entre sitios (XSS). Este [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[34,49,48,7],"class_list":["post-1788","post","type-post","status-publish","format-standard","hentry","category-university","tag-consultor-autorizado","tag-google-website-optimizer","tag-herramientas","tag-seo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Problema de seguridad en el optimizador de sitios web - Overalia Blog<\/title>\n<meta name=\"description\" content=\"Google acaba de informar de un problema de seguridad con Google Website Optimizer, en concreto la secuencia de comandos de control del Optimizador de sitios web. Te explicamos c\u00f3mo evitarlo.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.overalia.com\/blog\/problema-de-seguridad-en-el-optimizador-de-sitios-web\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Problema de seguridad en el optimizador de sitios web - Overalia Blog\" \/>\n<meta property=\"og:description\" content=\"Google acaba de informar de un problema de seguridad con Google Website Optimizer, en concreto la secuencia de comandos de control del Optimizador de sitios web. 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