{"id":722,"date":"2016-03-07T09:15:57","date_gmt":"2016-03-07T09:15:57","guid":{"rendered":"http:\/\/borncity.com\/win\/?p=722"},"modified":"2020-12-13T00:09:10","modified_gmt":"2020-12-12T23:09:10","slug":"drown-homeserver-com-sub-domains-are-vulnerable","status":"publish","type":"post","link":"https:\/\/borncity.com\/win\/2016\/03\/07\/drown-homeserver-com-sub-domains-are-vulnerable\/","title":{"rendered":"Drown: homeserver.com sub-domains are vulnerable"},"content":{"rendered":"<p><img decoding=\"async\" style=\"float: left; margin: 0px 10px 0px 0px; display: inline\" src=\"http:\/\/www.borncity.com\/blog\/wp-content\/uploads\/2015\/01\/Stop.jpg\" align=\"left\">Today a warning, dedicated to Windows HomeServer users. It seems, that many subdomains hosted under Microsoft's <em>homeserver.com <\/em>domain are vulnerable via Drown attacks. <\/p>\n<p><!--more--><\/p>\n<p>Last week a vulnerability of TLS protocol has been uncovered \u2013 arstechnica <a href=\"http:\/\/arstechnica.com\/security\/2016\/03\/more-than-13-million-https-websites-imperiled-by-new-decryption-attack\/\" target=\"_blank\" rel=\"noopener\">has written here<\/a> about that topic. A brief description <a href=\"https:\/\/wp.nyu.edu\/itsecurity\/2016\/03\/02\/drown-attack-decrypting-rsa-using-obsolete-weakened-encryption\/\" target=\"_blank\" rel=\"noopener\">may be found here<\/a> \u2013 and <a href=\"https:\/\/drownattack.com\/\" target=\"_blank\" rel=\"noopener\">drownattack.com<\/a> contains a few more details. Users hosting a website or running a webserver may use https:\/\/test.drownattack.com to test the vulnerability. Yesterday I 've blogged about Drown and German incident within my German blog (<a href=\"http:\/\/www.borncity.com\/blog\/2016\/03\/05\/erste-opfer-der-drown-sicherheitslcke-server4you-kunden\/\" target=\"_blank\" rel=\"noopener\">Erste Opfer der Drown-Sicherheitsl\u00fccke: Server4You-Kunden<\/a>). A few hour later I received a short e-mail from a blog-reader, informing me, to have a look at Microsoft's <em>homeserver.com <\/em>domain.&nbsp; <\/p>\n<p><img decoding=\"async\" title=\"Drown Attack\" alt=\"Drown Attack\" src=\"https:\/\/web.archive.org\/web\/20200627055832\/https:\/\/t00.imgup.net\/HomeServer10bb.jpg\"> <\/p>\n<p>The screenshot shown above reveals a list of sub-domains, hosted at <em>homeserver.com <\/em>(from Windows Home Server users) and using <em>https<\/em> are vulnerable for Drown attacks. Also some sub-domains are vulnerable for <em>eavesdropping <\/em>attacks and exporting SSLv2 ciphers. <\/p>\n<p><img decoding=\"async\" src=\"https:\/\/web.archive.org\/web\/20200625123145\/https:\/\/i37.imgup.net\/HomeServer33b0.jpg\"> <\/p>\n<p>Browser like Google Chrome, Firefox and Internet Explorers are issuing a big warning, that the sites are not safe. Perhaps Microsoft should send a warning to all users with a sub-domain at <em>homeserver.com<\/em>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Today a warning, dedicated to Windows HomeServer users. It seems, that many subdomains hosted under Microsoft's homeserver.com domain are vulnerable via Drown attacks.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[208,209,69],"class_list":["post-722","post","type-post","status-publish","format-standard","hentry","category-windows","tag-down-vulnerability","tag-homeserver-com","tag-security"],"_links":{"self":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/722","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/comments?post=722"}],"version-history":[{"count":0,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/722\/revisions"}],"wp:attachment":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/media?parent=722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/categories?post=722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/tags?post=722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}