{"id":7958,"date":"2018-12-08T00:06:00","date_gmt":"2018-12-07T23:06:00","guid":{"rendered":"http:\/\/159.69.82.204\/win\/?p=7958"},"modified":"2018-12-08T07:42:43","modified_gmt":"2018-12-08T06:42:43","slug":"new-splitspectre-attack-windows-retpoline-spectre-mitigation","status":"publish","type":"post","link":"https:\/\/borncity.com\/win\/2018\/12\/08\/new-splitspectre-attack-windows-retpoline-spectre-mitigation\/","title":{"rendered":"New SplitSpectre-Attack; Windows Retpoline Spectre Mitigation"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" style=\"float: left; margin: 0px 10px 0px 0px; display: inline;\" src=\"https:\/\/www.borncity.com\/blog\/wp-content\/uploads\/2015\/01\/Schutz.jpg\" width=\"40\" height=\"47\" align=\"left\" \/>Just a brief note: Researchers discover an new Spectre-like CPU attack, called SplitSpectre. And Microsoft has published an article about Windows Retpoline Spectre Mitigation.<\/p>\n<p><!--more--><\/p>\n<h2>SplitSpectre CPU attack<\/h2>\n<p>Three academics from Northeastern University and three researchers from IBM Research have discovered a new variation of the Spectre CPU vulnerability that can be exploited via browser-based code.<\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"de\">\n<p dir=\"ltr\" lang=\"en\">NEW: Researchers discover SplitSpectre, a new Spectre-like CPU attack<a href=\"https:\/\/t.co\/n3vKIr4vMc\">https:\/\/t.co\/n3vKIr4vMc<\/a> <a href=\"https:\/\/t.co\/mtgy11AFoH\">pic.twitter.com\/mtgy11AFoH<\/a><\/p>\n<p>\u2014 Catalin Cimpanu (@campuscodi) <a href=\"https:\/\/twitter.com\/campuscodi\/status\/1069767506322182144?ref_src=twsrc%5Etfw\">4. Dezember 2018<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>Catalin Cimpanu has more details within <a href=\"https:\/\/www.zdnet.com\/article\/researchers-discover-splitspectre-a-new-spectre-like-cpu-attack\/\" target=\"_blank\" rel=\"noopener\">this ZDNet.com article<\/a> (thx @phantomofmobile for the hint).<\/p>\n<h2>Mitigating Spectre variant 2 with Retpoline on Windows<\/h2>\n<p>In January 2018, Microsoft released <a href=\"https:\/\/portal.msrc.microsoft.com\/en-US\/security-guidance\/advisory\/ADV180002\" target=\"_blank\" rel=\"noopener\">an advisory and security updates<\/a>. This was related to a newly discovered class of hardware vulnerabilities involving speculative execution side channels (known as Spectre and Meltdown). That vulnerabilities affect AMD, ARM, and Intel CPUs to varying degrees.<\/p>\n<p>Patches to mitigate these vulnerabilities has been a negative performance influence on the machines. With the retpoline technology developed by Google, it's possible to mitigate spectre like vulnerabilities without reducing performance on a machine. Microsoft has begun to use retpoline in newer Windows builds. The article <a href=\"https:\/\/techcommunity.microsoft.com\/t5\/Windows-Kernel-Internals\/Mitigating-Spectre-variant-2-with-Retpoline-on-Windows\/ba-p\/295618\" target=\"_blank\" rel=\"noopener\">Mitigating Spectre variant 2 with Retpoline on Windows<\/a> sheds more life into that topic.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Just a brief note: Researchers discover an new Spectre-like CPU attack, called SplitSpectre. And Microsoft has published an article about Windows Retpoline Spectre Mitigation.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[580],"tags":[69],"class_list":["post-7958","post","type-post","status-publish","format-standard","hentry","category-security","tag-security"],"_links":{"self":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/7958","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=7958"}],"version-history":[{"count":0,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/7958\/revisions"}],"wp:attachment":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/media?parent=7958"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/categories?post=7958"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/tags?post=7958"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}