{"id":3821,"date":"2021-12-17T08:59:05","date_gmt":"2021-12-17T07:59:05","guid":{"rendered":"https:\/\/www.infordisa.com\/soc\/?p=3821"},"modified":"2025-08-18T13:18:04","modified_gmt":"2025-08-18T11:18:04","slug":"otra-vulnerabilidad-de-log4j-obliga-a-actualizar","status":"publish","type":"post","link":"https:\/\/www.infordisa.com\/soc\/otra-vulnerabilidad-de-log4j-obliga-a-actualizar\/","title":{"rendered":"Otra vulnerabilidad de Log4j obliga a actualizar"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"3821\" class=\"elementor elementor-3821\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-380fc5cc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"380fc5cc\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-57f7d8ed\" data-id=\"57f7d8ed\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1489cae elementor-widget elementor-widget-shortcode\" data-id=\"1489cae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><span style=\"color: #c02b23;font-weight: bold\">Cr&iacute;tica <\/span><img loading=\"lazy\" decoding=\"async\" width=\"10\" height=\"10\" src=\"https:\/\/www.infordisa.com\/soc\/imgs\/alerta-5.png\" alt=\"Alerta 5\"\/><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-77359fc7 elementor-widget elementor-widget-text-editor\" data-id=\"77359fc7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div><strong><a href=\"https:\/\/www.cve.org\/CVERecord?id=CVE-2021-45046\" target=\"_blank\" rel=\"noopener\">CVE-2021-45046<\/a><\/strong><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3d530c95 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3d530c95\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-aba2598 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"aba2598\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8d6a86b\" data-id=\"8d6a86b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bf6b413 elementor-widget elementor-widget-text-editor\" data-id=\"bf6b413\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>En los &uacute;ltimos d&iacute;as ya anunciamos una nueva y grave <a class=\"glossaryLink\" href=\"https:\/\/www.infordisa.com\/soc\/glosario-definicion\/vulnerabilidad\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">vulnerabilidad<\/a> que afecta a la popular <a href=\"https:\/\/www.infordisa.com\/soc\/vulnerabilidad-apache-log4j\/\">librer&iacute;a de registro de Java Log4j<\/a>. En este art&iacute;culo nos hacemos eco de c&oacute;mo los piratas inform&aacute;ticos est&aacute;n comenzando a explotar una segunda vulnerabilidad de Log4j. Una vez m&aacute;s, se hace imprescindible que los usuarios actualicen los sistemas y puedan corregir lo antes posible estas vulnerabilidades para evitar as&iacute; ser v&iacute;ctimas de ataques.<\/p><h2>Empiezan a explotar un segundo fallo de Log4j<\/h2><p>Cloudflare ha alertado de que los ciberdelincuentes est&aacute;n empezando a explotar una segunda vulnerabilidad de Log4j. Indican que es imprescindible que los usuarios cuenten con la &uacute;ltima versi&oacute;n 2.16.0, ya que de lo contrario ser&iacute;an vulnerables. Hay que tener en cuenta que la versi&oacute;n 2.15.0 lleg&oacute; para corregir el fallo inicial, pero ya tampoco es suficiente.<\/p><p>Esta nueva <a class=\"glossaryLink\" href=\"https:\/\/www.infordisa.com\/soc\/glosario-definicion\/vulnerabilidad\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">vulnerabilidad<\/a> ha sido registrada como <a href=\"https:\/\/www.cve.org\/CVERecord?id=CVE-2021-45046\">CVE-2021-45046<\/a>. Un hipot&eacute;tico atacante podr&iacute;a llevar a cabo <a class=\"glossaryLink\" href=\"https:\/\/www.infordisa.com\/soc\/glosario-definicion\/denegacion-de-servicio\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">denegaci&oacute;n de servicio<\/a>. Este nuevo problema llega despu&eacute;s de que la soluci&oacute;n original para la vulnerabilidad Log4Shell estuviera incompleta en ciertas configuraciones no predeterminadas.<\/p><p>Pero el problema parece que no queda ah&iacute;. Seg&uacute;n indican los investigadores de seguridad de Praetorian, existe una tercera vulnerabilidad de Log4j independiente. Este fallo, que tampoco lo corrige la versi&oacute;n 2.15.0, puede permitir la filtraci&oacute;n de datos confidenciales. No han dado por el momento m&aacute;s datos t&eacute;cnicos para evitar su explotaci&oacute;n.<\/p><p>Estos fallos que mencionamos pueden poner en riesgo a industrias de todo tipo a nivel mundial. Se trata de una librer&iacute;a de registro ampliamente utilizada, por lo que son muchos los que pueden verse afectados.<\/p><h2>Actualizar, la mejor soluci&oacute;n para estar protegidos<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fce6d3e elementor-widget elementor-widget-text-editor\" data-id=\"fce6d3e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Una vez m&aacute;s, instalar la &uacute;ltima versi&oacute;n es la mejor soluci&oacute;n posible para estar protegidos frente a esta nueva <a class=\"glossaryLink\" href=\"https:\/\/www.infordisa.com\/soc\/glosario-definicion\/vulnerabilidad\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">vulnerabilidad<\/a> de Log4j. Se trata de la segunda que vemos en cuesti&oacute;n de d&iacute;as y, como hemos explicado, hace que el anterior parche lanzado, la versi&oacute;n 2.15.0, no sea efectiva para corregir este nuevo problema.<\/p><p>Entonces, &iquest;Qu&eacute; podemos hacer para estar protegidos? No queda m&aacute;s remedio que volver a actualizar, esta vez a la versi&oacute;n <strong>2.16.0.<\/strong> Esto nos proteger&aacute; de este segundo ataque que puede provocar denegaci&oacute;n de servicio y comprometer el buen funcionamiento.<\/p><p>No obstante, como hemos visto puede haber una <strong>tercera vulnerabilidad<\/strong> que empiece a ser explotada. Va a ser necesario volver a instalar pr&oacute;ximamente una nueva actualizaci&oacute;n que, una vez m&aacute;s, corrija esta vulnerabilidad.<\/p><p>En definitiva, Log4j vuelve a estar presente en una nueva <a class=\"glossaryLink\" href=\"https:\/\/www.infordisa.com\/soc\/glosario-definicion\/vulnerabilidad\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">vulnerabilidad<\/a>. Se trata de un fallo que est&aacute; siendo explotado activamente, pero para el que ya existe parche con la actualizaci&oacute;n 2.16.0 que todos los usuarios deber&iacute;an instalar cuanto antes y evitar as&iacute; problemas.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0900aae elementor-widget elementor-widget-image\" data-id=\"0900aae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"612\" height=\"408\" src=\"https:\/\/www.infordisa.com\/soc\/wp-content\/uploads\/2021\/12\/log4j-1.jpg\" class=\"attachment-large size-large wp-image-3823\" alt=\"\" srcset=\"https:\/\/www.infordisa.com\/soc\/wp-content\/uploads\/2021\/12\/log4j-1.jpg 612w, https:\/\/www.infordisa.com\/soc\/wp-content\/uploads\/2021\/12\/log4j-1-300x200.jpg 300w, https:\/\/www.infordisa.com\/soc\/wp-content\/uploads\/2021\/12\/log4j-1-18x12.jpg 18w\" sizes=\"(max-width: 612px) 100vw, 612px\"\/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5a12c39 elementor-alert-info elementor-widget elementor-widget-alert\" data-id=\"5a12c39\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"alert.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-alert\" role=\"alert\">\n\n\t\t\t\t\t\t<span class=\"elementor-alert-title\">&iquest;Necesitas ayuda?<\/span>\n\t\t\t\n\t\t\t\t\t\t<span class=\"elementor-alert-description\">Infordisa puede ser tu departamento dedicado exclusivamente a garantizar la Disponibilidad, Confidencialidad e Integridad de tus Sistemas de Informaci&oacute;n. Disponemos de especialistas en ciberseguridad.<\/span>\n\t\t\t\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-469707c elementor-widget elementor-widget-text-editor\" data-id=\"469707c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/www.infordisa.com\/soc\/contactar\/\">Contacta con nosotros<\/a> para solicitar nuestros servicios de <strong>consultor&iacute;a en seguridad inform&aacute;tica<\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>En los &uacute;ltimos d&iacute;as ya anunciamos una nueva y grave vulnerabilidad que afecta a la popular librer&iacute;a de registro de<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[4],"tags":[81,82],"class_list":["post-3821","post","type-post","status-publish","format-standard","hentry","category-alertas-de-seguridad","tag-apache","tag-log4j","masonry-post","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-25"],"acf":[],"yoast_head":"<title>Otra vulnerabilidad de Log4j obliga a actualizar - 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