{"id":33659,"date":"2019-10-31T21:53:59","date_gmt":"2019-10-31T18:53:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/predstavlen-novyj-klass-uyazvimostej-v-protsessorah-intel\/"},"modified":"2019-10-31T21:53:59","modified_gmt":"2019-10-31T18:53:59","slug":"predstavlen-novyj-klass-uyazvimostej-v-protsessorah-intel","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/predstavlen-novyj-klass-uyazvimostej-v-protsessorah-intel","title":{"rendered":"Bol nov\u00fd typ zranite\u013enosti v procesoroch Intel","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Spolo\u010dnos\u0165 Intel <noindex><a rel=\"nofollow\" href=\"https:\/\/www.intel.com\/content\/www\/us\/en\/security-center\/advisory\/intel-sa-00233.html\">publikovala<\/a><\/noindex> inform\u00e1cie o novom <noindex><a rel=\"nofollow\" href=\"https:\/\/www.intel.com\/content\/www\/us\/en\/architecture-and-technology\/mds.html\">typu zranite\u013enosti<\/a><\/noindex> vo svojich procesoroch \u2014 <noindex><a rel=\"nofollow\" href=\"https:\/\/mdsattacks.com\/\">MDS<\/a><\/noindex> (Microarchitectural Data Sampling). Rovnako ako predch\u00e1dzaj\u00face \u00fatoky typu Spectre, aj nov\u00e9 probl\u00e9my m\u00f4\u017eu vies\u0165 k \u00faniku d\u00f4vern\u00fdch \u00fadajov opera\u010dn\u00e9ho syst\u00e9mu, virtu\u00e1lnych strojov a cudz\u00edch procesov. Tvrd\u00ed sa, \u017ee probl\u00e9my boli najprv identifikovan\u00e9 zamestnancami a partnermi spolo\u010dnosti Intel po\u010das vn\u00fatorn\u00e9ho auditu, po ktorom inform\u00e1cie o podobn\u00fdch probl\u00e9moch v Inteli odovzdali nez\u00e1visl\u00ed v\u00fdskumn\u00edci. Procesory AMD a ARM nie s\u00fa touto problematikou postihovan\u00e9.<\/p>\n<p>Na z\u00e1klade identifikovan\u00fdch probl\u00e9mov v\u00fdskumn\u00edkmi z Technickej univerzity Graz (Rak\u00fasko) <noindex><a rel=\"nofollow\" href=\"https:\/\/cpu.fail\/\">boli vyvinut\u00e9<\/a><\/noindex> niektor\u00e9 praktick\u00e9 \u00fatoky prostredn\u00edctvom bo\u010dn\u00fdch kan\u00e1lov:<\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/zombieloadattack.com\/\">ZombieLoad<\/a><\/noindex>  (<noindex><a rel=\"nofollow\" href=\"https:\/\/zombieloadattack.com\/zombieload.pdf\">PDF<\/a><\/noindex>) \u2014 umo\u017e\u0148uje extrahova\u0165 d\u00f4vern\u00e9 inform\u00e1cie z in\u00fdch procesov, opera\u010dn\u00e9ho syst\u00e9mu, virtu\u00e1lnych strojov a chr\u00e1nen\u00fdch enkl\u00e1v (TEE, Trusted Execution Environment). Napr\u00edklad bola preuk\u00e1zan\u00e1 mo\u017enos\u0165 ur\u010denia hist\u00f3rie otvoren\u00fdch str\u00e1nok v prehliada\u010di Tor, ktor\u00fd bol spusten\u00fd v inom virtu\u00e1lnom stroji, ako aj zistenie pou\u017e\u00edvan\u00fdch k\u013e\u00fa\u010dov pr\u00edstupu a hesiel v aplik\u00e1ci\u00e1ch;\n<p><center><br \/>\n<video controls=\"\" style=\"width: 720px; max-width:100%\" poster=\"https:\/\/zombieloadattack.com\/public\/images\/demo.jpg\"  src=\"https:\/\/zombieloadattack.com\/public\/videos\/demo_720.mp4\"><source src=\"https:\/\/zombieloadattack.com\/public\/videos\/demo_720.mp4\" type=\"video\/mp4\" label=\"720p\"><\/video><\/center><\/p>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/mdsattacks.com\/\">RIDL<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/mdsattacks.com\/files\/ridl.pdf\">PDF<\/a><\/noindex>) \u2014 umo\u017e\u0148uje organizova\u0165 \u00fanik inform\u00e1ci\u00ed medzi r\u00f4znymi izolovan\u00fdmi oblas\u0165ami v procesoroch Intel, ako s\u00fa vyrovn\u00e1vacie pam\u00e4te, pam\u00e4te na ukladanie a porty na\u010d\u00edtania. Pr\u00edklady vykonan\u00fdch \u00fatokov s\u00fa preuk\u00e1zan\u00e9 na organizovanie \u00fanikov z in\u00fdch procesov, opera\u010dn\u00e9ho syst\u00e9mu, virtu\u00e1lnych strojov a chr\u00e1nen\u00fdch enkl\u00e1v. Napr\u00edklad uk\u00e1zalo, ako zisti\u0165 obsah ha\u0161ovania hesla root z \/etc\/shadow po\u010das periodick\u00fdch pokusov o autentifik\u00e1ciu (\u00fatok trval 24 hod\u00edn);\n<p><center><div class=\"youtube-placeholder\" data-id=\"JXPebaGY8RA\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/JXPebaGY8RA\/hqdefault.jpg\" alt=\"Prehrajte video\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div><\/center><\/p>\n<p>Okrem toho bol predveden\u00fd pr\u00edklad uskuto\u010dnenia \u00fatoku pomocou JavaScriptu a WebAssembly pri otvoren\u00ed \u0161kodlivej str\u00e1nky v eng\u00edne SpiderMonkey (v modern\u00fdch plnohodnotn\u00fdch prehliada\u010doch je tak\u00fdto \u00fatok m\u00e1lo pravdepodobn\u00fd kv\u00f4li obmedzeniu presnosti \u010dasova\u010da a opatreniam na ochranu proti Spectre);<\/p>\n<p><center><div class=\"youtube-placeholder\" data-id=\"KAgoDQmod1Y\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/KAgoDQmod1Y\/hqdefault.jpg\" alt=\"Prehrajte video\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div><\/center><\/p>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/mdsattacks.com\/\">Fallout<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/mdsattacks.com\/files\/fallout.pdf\">PDF<\/a><\/noindex>) \u2014 umo\u017e\u0148uje \u010d\u00edta\u0165 \u00fadaje, ned\u00e1vno zap\u00edsan\u00e9 opera\u010dn\u00fdm syst\u00e9mom, a ur\u010di\u0165 rozlo\u017eenie pam\u00e4te OS pre u\u013eah\u010denie vykon\u00e1vania in\u00fdch \u00fatokov;\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/cpu.fail\/store_to_leak_forwarding.pdf\">Store-To-Leak Forwarding<\/a><\/noindex> \u2014 exploituje optimaliz\u00e1cie CPU pri pr\u00e1ci s pam\u00e4\u0165ou a m\u00f4\u017ee sa pou\u017ei\u0165 na ob\u00eddenie mechanizmu n\u00e1hodn\u00e9ho adresovania pam\u00e4te jadra (KASLR), na monitorovanie stavu opera\u010dn\u00e9ho syst\u00e9mu alebo na <noindex><a rel=\"nofollow\" href=\"https:\/\/www.cyberus-technology.de\/posts\/2019-05-14-zombieload.html\">organiz\u00e1ciu<\/a><\/noindex> \u00fanikov v kombin\u00e1cii s gadgetami zalo\u017een\u00fdmi na met\u00f3dach Spectre.\n<\/ul>\n<p>Identifikovan\u00e9 <noindex><a rel=\"nofollow\" href=\"https:\/\/software.intel.com\/security-software-guidance\/software-guidance\/microarchitectural-data-sampling\">zranite\u013enosti<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> CVE-2018-12126 \u2014 MSBDS (Microarchitectural Store Buffer Data Sampling), obnova obsahu vyrovn\u00e1vac\u00edch pam\u00e4t\u00ed. Pou\u017e\u00edva sa v \u00fatoku Fallout. \u00darove\u0148 nebezpe\u010dnosti bola ur\u010den\u00e1 na 6.5 bodov (CVSS);\n<li class=\"l\"> CVE-2018-12127 \u2014 MLPDS (Microarchitectural Load Port Data Sampling), obnova obsahu na\u010d\u00edtac\u00edch portov. Pou\u017e\u00edva sa v \u00fatoku RIDL. CVSS 6.5;\n<li class=\"l\"> CVE-2018-12130 \u2014 MFBDS (Microarchitectural Fill Buffer Data Sampling), obnova obsahu vyrovn\u00e1vac\u00edch pam\u00e4t\u00ed. Pou\u017e\u00edva sa v \u00fatokoch ZombieLoad a RIDL. CVSS 6.5;\n<li class=\"l\"> CVE-2019-11091 \u2014 MDSUM (Microarchitectural Data Sampling Uncacheable Memory), obnova obsahu necacheovanej pam\u00e4te. Pou\u017e\u00edva sa v \u00fatoku RIDL. CVSS 3.8.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/software.intel.com\/security-software-guidance\/insights\/deep-dive-intel-analysis-microarchitectural-data-sampling\">Podstata<\/a><\/noindex> identifikovan\u00fdch probl\u00e9mov v mo\u017enosti aplik\u00e1cie analytick\u00fdch met\u00f3d prostredn\u00edctvom ved\u013eaj\u0161\u00edch kan\u00e1lov na d\u00e1ta v mikroarchitektonick\u00fdch \u0161trukt\u00farach, na ktor\u00e9 aplik\u00e1cie priamo nemaj\u00fa pr\u00edstup. T\u00fdka sa to tak\u00fdch n\u00edzko\u00farov\u0148ov\u00fdch \u0161trukt\u00far, ako s\u00fa vypl\u0148ovacie prvky (Line Fill Buffer), \u00falo\u017en\u00e9 prvky (Store Buffer) a na\u010d\u00edtacie porty (Load Port), ktor\u00e9 s\u00fa men\u0161\u00edmi s\u00fa\u010das\u0165ami ako cache prvej \u00farovne (L1D), cache na\u010d\u00edtania d\u00e1t (RDCL) alebo L1TF (L1 Terminal Fault) a zodpovedne obsahuj\u00fa menej inform\u00e1ci\u00ed a s\u00fa aktualizovan\u00e9 intenz\u00edvnej\u0161ie.<br \/>\n<center><img decoding=\"async\" alt=\"Bol nov\u00fd typ zranite\u013enosti v procesoroch Intel\" src=\"\/wp-content\/uploads\/2019\/05\/205ff034e070b8b057f01c02d6381c2a.png\" style=\"display:block;margin: 0 auto;\" \/><\/center><\/p>\n<p>\u00datoky prostredn\u00edctvom ved\u013eaj\u0161\u00edch kan\u00e1lov na mikroarchitektonick\u00e9 \u0161trukt\u00fary s\u00fa podstatne n\u00e1ro\u010dnej\u0161ie na realiz\u00e1ciu v porovnan\u00ed s met\u00f3dami obnovy obsahu cache a vy\u017eaduj\u00fa sledovanie a anal\u00fdzu v\u00fdznamn\u00e9ho mno\u017estva d\u00e1t na ur\u010denie ich vz\u0165ahu k ur\u010dit\u00fdm adres\u00e1m v pam\u00e4ti (v podstate \u00fato\u010dn\u00edk nem\u00f4\u017ee cielene zachyti\u0165 ur\u010dit\u00e9 d\u00e1ta, ale m\u00f4\u017ee dlhodobo zhroma\u017e\u010fova\u0165 \u00faniky a pou\u017e\u00edva\u0165 \u0161tatistick\u00e9 met\u00f3dy na rekon\u0161trukciu ur\u010dit\u00fdch typov d\u00e1t). Okrem toho \u00fatok zasahuje iba do d\u00e1t na tom istom fyzickom jadre CPU, na ktorom je aj k\u00f3d \u00fato\u010dn\u00edka.<\/p>\n<p>Navrhnut\u00e9 met\u00f3dy ur\u010denia obsahu mikroarchitektonick\u00fdch \u0161trukt\u00far sa zakladaj\u00fa na tom, \u017ee tieto d\u00e1ta sa pou\u017e\u00edvaj\u00fa pri \u0161pekulat\u00edvnom spracovan\u00ed v\u00fdnimiek (fault) alebo oper\u00e1ci\u00ed na\u010d\u00edtania a ulo\u017eenia.<br \/>\nPri \u0161pekulat\u00edvnom vykon\u00e1van\u00ed je obsah vn\u00fatorn\u00fdch \u0161trukt\u00far presmerovan\u00fd na spracovanie do registri alebo cache. \u0160pekulat\u00edvne oper\u00e1cie sa nedokon\u010duj\u00fa a v\u00fdsledok sa zamieta, ale presmerovan\u00fd obsah m\u00f4\u017ee by\u0165 ur\u010den\u00fd pomocou met\u00f3d anal\u00fdzy cache prostredn\u00edctvom ved\u013eaj\u0161\u00edch kan\u00e1lov.<\/p>\n<p>Boot ports are used by the processor to obtain data from memory or the input\/output subsystem and to provide the retrieved information into the CPU registers. Due to the implementation specifics, data from old load operations remains in the ports until overwritten by new data, which allows for an indirect determination of the data state in the load port through manipulations with exceptions (faults) and SSE\/AVX\/AVX-512 instructions that load more than 64 bits of data. In such conditions, load operations speculatively expose outdated data values from internal structures into dependent operations. A similar leakage is organized through the storage buffer used to accelerate writing to the CPU cache and includes a table of addresses, values, and flags, as well as a fill buffer that contains data while missing in the L1 cache (cache-miss), until it is loaded from caches of other levels.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/pics_base\/0_1557869220.png\"><img decoding=\"async\" alt=\"Bol nov\u00fd typ zranite\u013enosti v procesoroch Intel\" src=\"\/wp-content\/uploads\/2019\/05\/1f8bf290cd6ecbec5a5f17cc3103010d.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Probl\u00e9m <noindex><a rel=\"nofollow\" href=\"https:\/\/www.intel.com\/content\/www\/us\/en\/architecture-and-technology\/engineering-new-protections-into-hardware.html\">t\u00fdka<\/a><\/noindex> Intel processor models released since 2011 (starting from the 6th generation). Hardware vulnerabilities are blocked starting from certain models of the 8th and 9th generations of Intel Core and the 2nd generation of Intel Xeon Scalable (can be checked via the ARCH_CAP_MDS_NO bit in the IA32_ARCH_CAPABILITIES MSR). Vulnerabilities have also already <noindex><a rel=\"nofollow\" href=\"https:\/\/www.intel.com\/content\/www\/us\/en\/architecture-and-technology\/mds.html\">been eliminated<\/a><\/noindex> at the firmware, microcode, and operating system levels. According to Intel's estimates, performance loss after activating the patch for most users <noindex><a rel=\"nofollow\" href=\"https:\/\/www.intel.com\/content\/www\/us\/en\/architecture-and-technology\/mds.html\">does not exceed<\/a><\/noindex> 3%. With Hyper-Threading technology disabled, the performance drop can reach 9% in the SPECint_rate_base test, up to 11% during integer computing tasks, and up to 19% during the execution of server Java applications (with HT enabled, performance degradation is almost non-existent). The patches have virtually no impact on the performance of I\/O related operations.<\/p>\n<p>In the Linux kernel, protection against MDS <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=fa4bff165070dc40a3de35b78e4f8da8e8d85ec5\">bola pridan\u00e1<\/a><\/noindex> in today's <noindex><a rel=\"nofollow\" href=\"https:\/\/www.kernel.org\/\">updates<\/a><\/noindex>  \t5.1.2, 5.0.16,<br \/>\n4.19.43, 4.14.119, and 4.9.176. The protection method <noindex><a rel=\"nofollow\" href=\"https:\/\/www.kernel.org\/doc\/html\/latest\/x86\/mds.html#mds\">is based<\/a><\/noindex> on clearing the contents of microarchitectural buffers at the moment of returning from kernel to user space or when transferring control to the guest system, for which the VERW instruction is used. For the protection to work, support for the MD_CLEAR mode, implemented in the latest microcode update, is required. For complete protection, it is also recommended to disable Hyper-Threading. To check for the system's vulnerability to this issue, refer to the Linux kernel. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.kernel.org\/doc\/html\/latest\/admin-guide\/hw-vuln\/mds.html\">bol pridan\u00fd<\/a><\/noindex> handler \u201e\/sys\/devices\/system\/cpu\/vulnerabilities\/mds\u201c. Na riadenie zap\u00ednania r\u00f4znych re\u017eimov blokovania zranite\u013enosti bol do jadra pridan\u00fd parameter \u201emds=\u201c, ktor\u00fd m\u00f4\u017ee nadob\u00fada\u0165 hodnoty \u201efull\u201c, \u201efull,nosmt\u201c (vypnutie Hyper-Threads), \u201evmwerv\u201c a \u201eoff\u201c.<\/p>\n<p> Aktualiz\u00e1cie bal\u00edkov u\u017e boli vydan\u00e9 pre <noindex><a rel=\"nofollow\" href=\"https:\/\/bugzilla.redhat.com\/show_bug.cgi?id=CVE-2018-12127\">RHEL<\/a><\/noindex> a <noindex><a rel=\"nofollow\" href=\"https:\/\/people.canonical.com\/~ubuntu-security\/cve\/2018\/CVE-2018-12127.html\">Ubuntu<\/a><\/noindex>, ale zatia\u013e zost\u00e1vaj\u00fa nedostupn\u00e9 pre <noindex><a rel=\"nofollow\" href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2018-12130\">Debian<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/bodhi.fedoraproject.org\/updates\/?releases=F30&#038;type=security\">Fedora<\/a><\/noindex> a <noindex><a rel=\"nofollow\" href=\"https:\/\/www.suse.com\/security\/cve\/CVE-2018-12127\/\">SUSE<\/a><\/noindex>.<br \/>\nOprava na blokovanie \u00fanikov \u00fadajov z virtu\u00e1lnych strojov tie\u017e <noindex><a rel=\"nofollow\" href=\"https:\/\/xenbits.xen.org\/xsa\/advisory-297.html\">vytvoren\u00e9<\/a><\/noindex> pre hyperv\u00edzor Xen. Na ochranu virtualiza\u010dn\u00fdch syst\u00e9mov, ktor\u00e9 vykon\u00e1vaj\u00fa pr\u00edkaz L1D_FLUSH pred odovzdan\u00edm riadenia in\u00e9mu virtu\u00e1lnemu stroju, a na ochranu encl\u00e1v Intel SGX sta\u010d\u00ed aktualiz\u00e1cia mikrok\u00f3du.  <\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Zdroj: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50684\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Intel \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e \u043d\u043e\u0432\u043e\u043c \u043a\u043b\u0430\u0441\u0441\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432 \u0441\u0432\u043e\u0438\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 &#8212; MDS (Microarchitectural Data Sampling). \u041a\u0430\u043a \u0438 \u043f\u0440\u043e\u0448\u043b\u044b\u0435 \u0430\u0442\u0430\u043a\u0438 \u043a\u043b\u0430\u0441\u0441\u0430 Spectre \u043d\u043e\u0432\u044b\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u043c\u043e\u0433\u0443\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0443\u0442\u0435\u0447\u043a\u0435 \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b, \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u043c\u0430\u0448\u0438\u043d \u0438 \u0447\u0443\u0436\u0438\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432. \u0423\u0442\u0432\u0435\u0440\u0436\u0434\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0441\u043f\u0435\u0440\u0432\u0430 \u0431\u044b\u043b\u0438 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0441\u043e\u0442\u0440\u0443\u0434\u043d\u0438\u043a\u0430\u043c\u0438 \u0438 \u043f\u0430\u0440\u0442\u043d\u0451\u0440\u0430\u043c\u0438 Intel \u0432 \u0445\u043e\u0434\u0435 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0433\u043e \u0430\u0443\u0434\u0438\u0442\u0430, \u043f\u043e\u043b\u0435 \u0447\u0435\u0433\u043e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u043e\u0431 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":25348,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-33659","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" 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