{"id":478799,"date":"2023-08-09T09:38:20","date_gmt":"2023-08-09T09:38:20","guid":{"rendered":""},"modified":"2023-09-05T11:17:36","modified_gmt":"2023-09-05T11:17:36","slug":"rowhammer","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/tr\/wiki\/rowhammer\/","title":{"rendered":"K\u00fcrekli \u00e7eki\u00e7"},"content":{"rendered":"<p>Rowhammer, modern DRAM (Dinamik Rasgele Eri\u015fim Belle\u011fi) h\u00fccrelerini etkileyen bir donan\u0131m g\u00fcvenlik a\u00e7\u0131\u011f\u0131d\u0131r. Bir bellek konumundaki bitlerin kas\u0131ts\u0131z olarak \u00e7evrilmesi olarak ortaya \u00e7\u0131kar ve yetkisiz de\u011fi\u015fikliklere ve k\u00f6t\u00fc niyetli akt\u00f6rlerin potansiyel istismar\u0131na olanak tan\u0131r.<\/p>\n<h2>Rowhammer&#039;\u0131n K\u00f6keninin Tarihi ve \u0130lk S\u00f6z\u00fc<\/h2>\n<p>Rowhammer&#039;\u0131n ke\u015ffi, Carnegie Mellon \u00dcniversitesi&#039;ndeki ara\u015ft\u0131rmac\u0131lar\u0131n g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131 ilk kez tespit etti\u011fi 2012 y\u0131l\u0131na kadar uzan\u0131yor. &quot;Rowhammer&quot; ad\u0131, bir dizi bellek h\u00fccresine tekrar tekrar eri\u015fmenin &quot;\u00e7eki\u00e7leme&quot; s\u00fcreci nedeniyle ortaya \u00e7\u0131kt\u0131 ve bu, biti\u015fik sat\u0131rlarda bitlerin de\u011fi\u015fmesine yol a\u00e7t\u0131.<\/p>\n<ul>\n<li><strong>2012:<\/strong> \u0130lk Ke\u015fif.<\/li>\n<li><strong>2014:<\/strong> Google&#039;\u0131n Project Zero ekibi, Rowhammer hatas\u0131n\u0131 kamuya a\u00e7\u0131klayarak olas\u0131 g\u00fcvenlik sonu\u00e7lar\u0131n\u0131 vurgulad\u0131.<\/li>\n<li><strong>2015-2021:<\/strong> Ara\u015ft\u0131rmalara devam edildi, Rowhammer sald\u0131r\u0131s\u0131n\u0131n yeni varyasyonlar\u0131 ve tetikleyici mekanizmalar\u0131 ke\u015ffedildi.<\/li>\n<\/ul>\n<h2>Rowhammer Hakk\u0131nda Detayl\u0131 Bilgi: Konuyu Geni\u015fletmek<\/h2>\n<p>Rowhammer, bellek h\u00fccrelerinin sat\u0131rlar ve s\u00fctunlar halinde d\u00fczenlendi\u011fi DRAM belle\u011fini etkiler. Elektrik y\u00fck\u00fc bir h\u00fccreden di\u011ferine s\u0131zd\u0131\u011f\u0131nda veri de\u011ferini de\u011fi\u015ftirerek bit de\u011fi\u015fimi meydana gelir. Rowhammer, verilere yetkisiz eri\u015fim sa\u011flamak i\u00e7in bu olgudan yararlan\u0131yor.<\/p>\n<h3>Rowhammer&#039;a Katk\u0131da Bulunan Fakt\u00f6rler<\/h3>\n<ol>\n<li><strong>Bellek Yo\u011funlu\u011fu:<\/strong> Teknoloji ilerledik\u00e7e haf\u0131za h\u00fccreleri k\u00fc\u00e7\u00fcl\u00fcyor ve birbirine daha yak\u0131n paketleniyor, bu da onlar\u0131 Rowhammer&#039;a kar\u015f\u0131 daha duyarl\u0131 hale getiriyor.<\/li>\n<li><strong>Yenileme H\u0131zlar\u0131:<\/strong> Daha d\u00fc\u015f\u00fck yenileme h\u0131zlar\u0131, h\u00fccrelerin daha az s\u0131kl\u0131kta yeniden \u015farj edildi\u011fi anlam\u0131na gelir ve bu da g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131 art\u0131rabilir.<\/li>\n<li><strong>Tasar\u0131m hatalar\u0131:<\/strong> Baz\u0131 tasar\u0131m \u00f6zellikleri sistemin Rowhammer&#039;a daha kolay maruz kalmas\u0131na neden olabilir.<\/li>\n<\/ol>\n<h2>Rowhammer&#039;\u0131n \u0130\u00e7 Yap\u0131s\u0131: Rowhammer Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h2>\n<ol>\n<li><strong>Hedef Se\u00e7imi:<\/strong> Sald\u0131rgan, bellekteki savunmas\u0131z sat\u0131rlar\u0131 belirler.<\/li>\n<li><strong>\u00c7eki\u00e7leme S\u00fcreci:<\/strong> Sald\u0131rgan se\u00e7ilen sat\u0131rlara tekrar tekrar eri\u015fir (veya &quot;\u00e7eki\u00e7ler&quot;).<\/li>\n<li><strong>Bit \u00c7evirme \u0130nd\u00fcksiyonu:<\/strong> Bu tekrarlanan \u00e7eki\u00e7leme, biti\u015fik s\u0131ralarda u\u00e7lar\u0131n d\u00f6nmesine neden olur.<\/li>\n<li><strong>S\u00f6m\u00fcr\u00fc:<\/strong> Sald\u0131rgan, g\u00fcvenlik \u00f6nlemlerini atlayarak verileri de\u011fi\u015ftirmek veya okumak i\u00e7in bu bit ge\u00e7i\u015flerini kullan\u0131r.<\/li>\n<\/ol>\n<h2>Rowhammer&#039;\u0131n Temel \u00d6zelliklerinin Analizi<\/h2>\n<ul>\n<li><strong>Saptanamayan:<\/strong> Geleneksel y\u00f6ntemlerle tespit edilmesi zordur.<\/li>\n<li><strong>S\u00f6m\u00fcr\u00fclebilir:<\/strong> Yetkisiz eri\u015fim elde etmek i\u00e7in kullan\u0131labilir.<\/li>\n<li><strong>Donan\u0131m Tabanl\u0131:<\/strong> Yaln\u0131zca yaz\u0131l\u0131m yamalar\u0131yla azalt\u0131lamaz.<\/li>\n<\/ul>\n<h2>Rowhammer T\u00fcrleri: Tablolar\u0131 ve Listeleri Kullan\u0131n<\/h2>\n<p>Rowhammer&#039;\u0131n her biri farkl\u0131 \u00f6zelliklere sahip \u00e7e\u015fitli varyasyonlar\u0131 vard\u0131r.<\/p>\n<table>\n<thead>\n<tr>\n<th>Tip<\/th>\n<th>Tan\u0131m<\/th>\n<th>Ke\u015fif Y\u0131l\u0131<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Orijinal<\/td>\n<td>Rowhammer&#039;\u0131n ilk \u015fekli<\/td>\n<td>2012<\/td>\n<\/tr>\n<tr>\n<td>\u00c7ift tarafl\u0131<\/td>\n<td>Sat\u0131r\u0131n hem \u00fcst\u00fcndeki hem de alt\u0131ndaki hedefler<\/td>\n<td>2014<\/td>\n<\/tr>\n<tr>\n<td>Tek Konum<\/td>\n<td>Bellekteki tek bir konumu hedefler<\/td>\n<td>2015<\/td>\n<\/tr>\n<tr>\n<td>TR\u00d6deme<\/td>\n<td>TRR (Hedef Sat\u0131r Yenileme) mekanizmas\u0131ndan yararlan\u0131r<\/td>\n<td>2020<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Rowhammer&#039;\u0131 Kullanma Yollar\u0131, Sorunlar ve \u00c7\u00f6z\u00fcmleri<\/h2>\n<h3>Kullan\u0131m Alanlar\u0131<\/h3>\n<ol>\n<li><strong>Ara\u015ft\u0131rma:<\/strong> Donan\u0131m g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 anlama ve azaltma.<\/li>\n<li><strong>K\u00f6t\u00fc Ama\u00e7l\u0131 S\u00f6m\u00fcr\u00fc:<\/strong> Yetkisiz veri manip\u00fclasyonu.<\/li>\n<\/ol>\n<h3>Sorunlar ve \u00c7\u00f6z\u00fcmler<\/h3>\n<ul>\n<li><strong>Yetkisiz Eri\u015fim:<\/strong> Artan yenileme h\u0131zlar\u0131 gibi donan\u0131m tabanl\u0131 azalt\u0131c\u0131 \u00f6nlemleri kullan\u0131n.<\/li>\n<li><strong>Tespit Zorlu\u011fu:<\/strong> \u00d6zel tespit ara\u00e7lar\u0131n\u0131 ve izlemeyi kullan\u0131n.<\/li>\n<\/ul>\n<h2>Ana \u00d6zellikler ve Benzer Terimlerle Di\u011fer Kar\u015f\u0131la\u015ft\u0131rmalar<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u00d6zellik<\/th>\n<th>K\u00fcrekli \u00e7eki\u00e7<\/th>\n<th>Benzer Donan\u0131m A\u00e7\u0131klar\u0131<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Hedef<\/td>\n<td>DRAM<\/td>\n<td>\u00c7e\u015fitli<\/td>\n<\/tr>\n<tr>\n<td>\u0130stismar edilebilirlik<\/td>\n<td>Y\u00fcksek<\/td>\n<td>De\u011fi\u015fir<\/td>\n<\/tr>\n<tr>\n<td>Azaltma<\/td>\n<td>Karma\u015f\u0131k<\/td>\n<td>De\u011fi\u015fir<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Rowhammer ile \u0130lgili Gelece\u011fin Perspektifleri ve Teknolojileri<\/h2>\n<ol>\n<li><strong>Yeni Tespit Teknikleri:<\/strong> Rowhammer&#039;\u0131 tespit etmek ve analiz etmek i\u00e7in ara\u00e7lar\u0131n geli\u015ftirilmesi.<\/li>\n<li><strong>Donan\u0131m\u0131n Yeniden Tasar\u0131m\u0131:<\/strong> Duyarl\u0131l\u0131\u011f\u0131 azaltmak i\u00e7in bellek mimarisindeki de\u011fi\u015fiklikler.<\/li>\n<li><strong>D\u00fczenleyici Standartlar:<\/strong> Daha g\u00fcvenli DRAM tasar\u0131m\u0131 sa\u011flamak i\u00e7in d\u00fczenlemeler olu\u015fturmak.<\/li>\n<\/ol>\n<h2>Proxy Sunucular\u0131 Nas\u0131l Kullan\u0131labilir veya Rowhammer ile \u0130li\u015fkilendirilebilir?<\/h2>\n<p>OneProxy taraf\u0131ndan sa\u011flananlar gibi proxy sunucular\u0131 Rowhammer ba\u011flam\u0131nda rol oynayabilir.<\/p>\n<ul>\n<li><strong>Trafi\u011fin Anonimle\u015ftirilmesi:<\/strong> Sald\u0131r\u0131 k\u00f6kenlerini maskeleyebilir.<\/li>\n<li><strong>\u0130zleme ve Tespit:<\/strong> Proxy sunucular\u0131, olas\u0131 Rowhammer sald\u0131r\u0131lar\u0131yla ilgili ola\u011fand\u0131\u015f\u0131 kal\u0131plar\u0131 tespit etmek i\u00e7in kullan\u0131labilir.<\/li>\n<li><strong>G\u00fcvenlik Katmanlamas\u0131:<\/strong> Rowhammer gibi karma\u015f\u0131k donan\u0131m a\u00e7\u0131klar\u0131na kar\u015f\u0131 savunma stratejisinin bir par\u00e7as\u0131 olarak proxy&#039;leri kullanmak.<\/li>\n<\/ul>\n<h2>\u0130lgili Ba\u011flant\u0131lar<\/h2>\n<ol>\n<li><a href=\"https:\/\/googleprojectzero.blogspot.com\" target=\"_new\" rel=\"noopener nofollow\">Google&#039;\u0131n Rowhammer&#039;daki Project Zero Blogu<\/a><\/li>\n<li><a href=\"https:\/\/link.springer.com\/chapter\/10.1007\/978-3-319-41479-4_24\" target=\"_new\" rel=\"noopener nofollow\">Rowhammer.js: JavaScript&#039;te Uzaktan Yaz\u0131l\u0131m Kaynakl\u0131 Hata Sald\u0131r\u0131s\u0131<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/tr\/\" target=\"_new\" rel=\"noopener\">OneProxy&#039;nin Resmi Web Sitesi<\/a><\/li>\n<li><a href=\"https:\/\/www.researchgate.net\/publication\/316065487_The_Rowhammer_problem_and_other_issues_we_may_face_as_memory_becomes_denser\" target=\"_new\" rel=\"noopener nofollow\">Rowhammer Hakk\u0131nda Son Ara\u015ft\u0131rma Makaleleri<\/a><\/li>\n<\/ol>\n<hr>\n<p>Bu makale Rowhammer&#039;\u0131n ge\u00e7mi\u015fi, i\u015flevselli\u011fi, \u00e7e\u015fitleri, ilgili sorunlar\u0131, gelece\u011fe y\u00f6nelik perspektifleri ve OneProxy taraf\u0131ndan sunulanlar gibi proxy sunucu teknolojileriyle ili\u015fkisi dahil olmak \u00fczere kapsaml\u0131 bir genel bak\u0131\u015f sunmaktad\u0131r. Hem teknik profesyoneller hem de bu karma\u015f\u0131k donan\u0131m g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131 anlamakla ilgilenenler i\u00e7in de\u011ferli bir kaynak olarak hizmet vermektedir.<\/p>","protected":false},"featured_media":478800,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478799","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Rowhammer: An In-Depth Analysis<\/mark>","faq_items":[{"question":"What is Rowhammer and why is it significant?","answer":"<p>Rowhammer is a hardware vulnerability that affects Dynamic Random-Access Memory (DRAM) cells. It enables unintentional flipping of bits in memory locations, potentially allowing malicious actors to gain unauthorized access to data. The significance lies in its wide applicability, difficulty to detect, and potential for severe security breaches.<\/p>"},{"question":"How was Rowhammer first discovered?","answer":"<p>Rowhammer was first discovered by researchers at Carnegie Mellon University in 2012. It was later publicly disclosed by Google's Project Zero team in 2014, and since then, there have been continued studies exploring various aspects and variations of the vulnerability.<\/p>"},{"question":"What types of Rowhammer exist, and how do they differ?","answer":"<p>There are several variations of Rowhammer, such as the Original, Double-Sided, One Location, and TRRespass. They differ in their attack methodologies, targeting different rows or locations within memory, and in the mechanisms they exploit. Each type represents an evolution in the methods used to induce and exploit bit flips in DRAM.<\/p>"},{"question":"What are the key problems related to the use of Rowhammer, and how can they be resolved?","answer":"<p>The primary problems related to Rowhammer include unauthorized data access and the difficulty of detection. Solutions include hardware-based mitigations such as increased refresh rates, specialized detection tools, and continuous monitoring for unusual patterns possibly related to Rowhammer attacks.<\/p>"},{"question":"How does Rowhammer compare to other similar hardware vulnerabilities?","answer":"<p>Rowhammer targets DRAM and is known for its high exploitability and complex mitigation. While it shares similarities with other hardware vulnerabilities, such as being a physical flaw, its specific targeting, mechanisms, and challenges make it distinct in comparison to others.<\/p>"},{"question":"What future technologies or perspectives are related to Rowhammer?","answer":"<p>Future perspectives related to Rowhammer include the development of new detection techniques, hardware redesign to reduce susceptibility, and regulatory standards to ensure safer DRAM design. These directions aim to increase the security and robustness of memory systems against Rowhammer-like vulnerabilities.<\/p>"},{"question":"How can proxy servers, such as OneProxy, be associated with Rowhammer?","answer":"<p>Proxy servers like OneProxy can be used or associated with Rowhammer in various ways. They can anonymize traffic to mask attack origins, monitor and detect unusual patterns related to potential Rowhammer attacks, and form part of a layered defense strategy against complex hardware vulnerabilities like Rowhammer.<\/p>"},{"question":"Where can more information about Rowhammer be found?","answer":"<p>More information about Rowhammer can be found through various resources, including <a href=\"https:\/\/googleprojectzero.blogspot.com\" target=\"_new\">Google's Project Zero Blog<\/a>, academic papers like <a href=\"https:\/\/link.springer.com\/chapter\/10.1007\/978-3-319-41479-4_24\" target=\"_new\">Rowhammer.js: A Remote Software-Induced Fault Attack in JavaScript<\/a>, and <a href=\"https:\/\/oneproxy.pro\" target=\"_new\">OneProxy's Official Website<\/a> for insights on how proxy servers relate to Rowhammer.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/tr\/wp-json\/wp\/v2\/wiki\/478799","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/tr\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/tr\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/tr\/wp-json\/wp\/v2\/wiki\/478799\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/tr\/wp-json\/wp\/v2\/media\/478800"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/tr\/wp-json\/wp\/v2\/media?parent=478799"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}