{"id":365,"date":"2005-05-13T09:51:02","date_gmt":"2005-05-13T13:51:02","guid":{"rendered":"http:\/\/www.scaredpoet.com\/wordpress\/?p=365"},"modified":"2005-05-13T09:51:40","modified_gmt":"2005-05-13T13:51:40","slug":"intel-hyper-threading-a-security-threat","status":"publish","type":"post","link":"https:\/\/scaredpoet.com\/blog\/?p=365","title":{"rendered":"Intel Hyper-Threading: a security threat?"},"content":{"rendered":"<p>If you have a recent Pentium 4 or Xeon-based server running in a multi-user environment, watch out:  there is current talk that <a href=\"http:\/\/www.intel.com\/technology\/hyperthread\/\">Hyper-Threading<\/a>, a technology inherent in Intel Pentium 4 systems that allows multiple parallel threads to execute on a processor to speed up operations, <a href=\"http:\/\/www.daemonology.net\/hyperthreading-considered-harmful\/\">suffers from a serious security flaw:<\/a><\/p>\n<blockquote><p>Hyper-Threading, as currently implemented on Intel Pentium Extreme Edition, Pentium 4, Mobile Pentium 4, and Xeon processors, suffers from a serious security flaw. This flaw permits local information disclosure, including allowing an unprivileged user to steal an RSA private key being used on the same machine. <strong>Administrators of multi-user systems are strongly advised to take action to disable Hyper-Threading immediately<\/strong>; single-user systems (i.e., desktop computers) are not affected.\n<\/p><\/blockquote>\n<p>Generally, the average user with a single desktop at home won&#8217;t have much to worry about, but workplaces with multi-user environments will want to take heed.<\/p>\n<p>More information on the <a href=\"http:\/\/kerneltrap.org\/node\/5103\">announcement from FreeBSD guru Colin Percival can be found here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Contentions ar ebeing made that hyperthreading technology, present in current incarnations of Intel Pentium 4 and Pentium extreme, suffers from a sever security flaw.<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-365","post","type-post","status-publish","format-standard","hentry","category-gadgets-widgits-and-whatzits"],"_links":{"self":[{"href":"https:\/\/scaredpoet.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/365","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scaredpoet.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scaredpoet.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scaredpoet.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/scaredpoet.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=365"}],"version-history":[{"count":0,"href":"https:\/\/scaredpoet.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/365\/revisions"}],"wp:attachment":[{"href":"https:\/\/scaredpoet.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=365"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scaredpoet.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=365"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scaredpoet.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=365"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}