{"id":16014,"date":"2020-10-20T11:04:38","date_gmt":"2020-10-20T09:04:38","guid":{"rendered":"https:\/\/www.vunkers.com\/?p=16014"},"modified":"2020-10-20T11:04:38","modified_gmt":"2020-10-20T09:04:38","slug":"badneighbor-vulnerabilitat-windows-2020","status":"publish","type":"post","link":"https:\/\/www.vunkers.com\/ca\/insights-i-noticies\/seguretat-informatica\/badneighbor-vulnerabilitat-windows-2020\/","title":{"rendered":"Bad Neighbor, la nova vulnerabilitat de Windows"},"content":{"rendered":"<h2>Implementaci\u00f3 d&#8217;actualitzacions de sistemes per evitar vulnerabilitats<\/h2>\n<p>Di\u00e0riament sorgeixen noves <strong>vulnerabilitats i actualitzacions que les eliminen<\/strong>, en aquest cas parlem de la que s&#8217;ha nomenat &#8220;<strong>Bad Neighbor<\/strong>&#8221; o mal ve\u00ed.<\/p>\n<p>Els seus efectes poden ser desastrosos, es tracta d&#8217;una <strong>vulnerabilitat <em>wormable<\/em> a la qual Microsoft<\/strong> ha qualificat de &#8220;critica i d&#8217;explotabilitat alta&#8221;, ja que es pot realitzar remotament i pot utilitzar-se per accedir a altres sistemes d&#8217;una xarxa, de manera que nom\u00e9s cal que l&#8217;atacant accedeixi a un sistema perqu\u00e8 els altres, que es trobin dins de la xarxa, puguin veure&#8217;s afectats.<\/p>\n<h4>Com ho fa<\/h4>\n<p>Es tracta d&#8217;una <strong>errada durant l&#8217;an\u00e0lisi dels paquets Router Advertisment ICMPv6<\/strong> que fan servir servidor DNS recursiu, aix\u00f2 <strong>provoca un desbordament de la mem\u00f2ria interm\u00e8dia i permet l&#8217;execuci\u00f3 de codi malici\u00f3s de forma remota<\/strong>, motiu pel qual \u00e9s altament perill\u00f3s.<\/p>\n<p>Queda per descobrir si es pot fer servir canalitzant el tr\u00e0nsit ICMPv6 sobre IPv4 amb eines com 6to4 entre d&#8217;altres. En aquest cas estar\u00edem parlant d&#8217;una vulnerabilitat molt m\u00e9s perillosa, quan parlem d&#8217;una que ja es critica.<\/p>\n<h4>Protecci\u00f3<\/h4>\n<p><strong>Microsoft a llan\u00e7at una actualitzaci\u00f3 per corregir aquesta errada<\/strong>, \u00e9s <strong>molt important actualitzar els nostres equips de manera constant<\/strong>, per\u00f2 en aquest cas cal implementar l&#8217;actualitzaci\u00f3 com m\u00e9s aviat millor.<\/p>\n<p>Si la situaci\u00f3 actual no et permet realitzar l&#8217;actualitzaci\u00f3, temporalment pots desactivar el protocol IPv6.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Departament de sistemes de Vunkers IT Experts<\/strong>:<br \/>\n<strong><a href=\"https:\/\/www.vunkers.com\/ca\/servicios\/sistemes\/\">Experts en seguretat de sistemes<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Implementaci\u00f3 d&#8217;actualitzacions de sistemes per evitar vulnerabilitats Di\u00e0riament sorgeixen noves vulnerabilitats i actualitzacions que les eliminen, en aquest cas parlem de la que s&#8217;ha nomenat &#8220;Bad Neighbor&#8221; o mal ve\u00ed. Els seus efectes poden ser desastrosos, es tracta d&#8217;una vulnerabilitat wormable a la qual Microsoft ha qualificat de &#8220;critica i d&#8217;explotabilitat alta&#8221;, ja que es [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":16024,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bad Neighbor, la nova vulnerabilitat de Windows | Vunkers IT Experts | Proveedor de Servicios IT para empresas<\/title>\n<meta name=\"description\" content=\"Bad Neighbor una vulnerabilitat wormable, Microsoft a llan\u00e7at una actualitzaci\u00f3 per corregir aquesta errada\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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