• Skip to main content

Naga Cyber Defense

Trusted Security for all of Indonesia

  • Home
  • About
  • Programs
  • Contact
  • Blog
You are here: Home / Archives for DMP

DMP

Chip PC dan Ponsel Apple Mengalami Eksploitasi Pencurian Data Pertama di Dunia

May 11, 2022 by Eevee

Sejumlah perangkat Apple yang lebih baru membawa kelemahan unik, yang mengingatkan kita pada Spectre/Meltdown, yang dapat memungkinkan pelaku ancaman untuk mencuri data sensitif, para ahli telah memperingatkan.

Sebuah tim peneliti dari University of Illinois Urbana-Champaign, Tel Aviv University, dan University of Washington, telah menemukan cacat dalam fitur unik untuk silikon Apple, yang disebut Data Memory-Dependent Prefetcher (DMP).

Cacat itu mungkin memengaruhi seluruh host silikon Apple, termasuk chip M1 dan M1 Max internalnya sendiri.

Ide di balik DMP adalah untuk meningkatkan kinerja sistem dengan mengambil data terlebih dahulu, bahkan sebelum dibutuhkan – data yang pada dasarnya tidak aktif. Biasanya, karena alasan keamanan, data akan dibatasi dan dibagi di antara berbagai kompartemen, dan hanya ditarik saat dibutuhkan.

Dengan DMP, data diambil terlebih dahulu, dan data inilah yang dapat diakses oleh pihak ketiga yang tidak berwenang, mirip dengan cacat Spectre/Meltdown. Pada Spectre/Meltdown, silikon akan mencoba untuk berspekulasi data mana yang dapat digunakan dalam waktu dekat, agak membatasi permukaan serangan. Sedangkan pada DMP Apple, seluruh isi memori bisa bocor.

Para peneliti menamakan cacat itu “Augury”. Sejauh ini, A14 System on Chip (SoC) Apple, yang ditemukan di iPad Air Generasi ke-4 dan perangkat iPhone Generasi ke-12, M1, dan M1 Max, semuanya ditemukan rentan. Meskipun mereka mencurigai silikon yang lebih tua (M1 Pro, dan M1 Ultra, misalnya) mungkin juga rentan terhadap Augury, mereka hanya berhasil menunjukkan kelemahan pada titik akhir ini.

Apple diduga “sepenuhnya menyadari” penemuan tersebut, yang dilaporkan telah didiskusikan dengan para peneliti, tetapi belum membagikan rencana mitigasi dan garis waktu patch.

Sumber: TechRadar

Tagged With: Apple, Data Memory-Dependent Prefecther, DMP, Vulnerability

Copyright © 2025 · Naga Cyber Defense · Sitemap

Cookies Settings
We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies.
Do not sell my personal information.
AcceptReject AllCookie Settings
Manage consent

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary
Always Enabled
Necessary cookies are absolutely essential for the website to function properly. These cookies ensure basic functionalities and security features of the website, anonymously.
Functional
Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features.
Performance
Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.
Analytics
Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc.
CookieDurationDescription
_ga2 yearsThe _ga cookie, installed by Google Analytics, calculates visitor, session and campaign data and also keeps track of site usage for the site's analytics report. The cookie stores information anonymously and assigns a randomly generated number to recognize unique visitors.
_gat_gtag_UA_172707709_11 minuteSet by Google to distinguish users.
_gid1 dayInstalled by Google Analytics, _gid cookie stores information on how visitors use a website, while also creating an analytics report of the website's performance. Some of the data that are collected include the number of visitors, their source, and the pages they visit anonymously.
Advertisement
Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads.
Others
Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet.
non-necessary
SAVE & ACCEPT
Powered by CookieYes Logo