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{"id":2440358,"date":"2022-02-23T20:31:18","date_gmt":"2022-02-23T19:31:18","guid":{"rendered":"https:\/\/www.phonandroid.com\/?p=2440358"},"modified":"2022-02-23T23:21:44","modified_gmt":"2022-02-23T22:21:44","slug":"samsung-a-livre-plus-de-100-millions-de-smartphones-avec-une-faille-de-securite-critique","status":"publish","type":"post","link":"https:\/\/www.phonandroid.com\/samsung-a-livre-plus-de-100-millions-de-smartphones-avec-une-faille-de-securite-critique.html","title":{"rendered":"Samsung a livr\u00e9 plus de 100 millions de smartphones avec une faille de s\u00e9curit\u00e9 critique !"},"content":{"rendered":"

Des chercheurs en s\u00e9curit\u00e9 informatique de l'universit\u00e9 de Tel Aviv ont d\u00e9couvert que Samsung a livr\u00e9 plus de 100 millions de smartphones avec une faille de s\u00e9curit\u00e9 critique. En effet et depuis presque quatre ans, la gestion des cl\u00e9s de chiffrement sur les Galaxy abritait une vuln\u00e9rabilit\u00e9 importante qui permettait \u00e0 un attaquant de toutes le r\u00e9cup\u00e9rer \u00e0 distance.<\/strong><\/p>\n

\"samsung
Cr\u00e9dits : Unsplash<\/figcaption><\/figure>\n

Si Samsung est encore occup\u00e9 \u00e0 g\u00e9rer les probl\u00e8mes d'affichage avec l'\u00e9cran tactile du Galaxy S22<\/a>, des chercheurs en s\u00e9curit\u00e9 informatique de l'universit\u00e9 de Tel Aviv viennent de faire une d\u00e9couvert stup\u00e9fiante. En effet, ils se sont aper\u00e7us que tous les smartphones de la gamme Galaxy \u00e9coul\u00e9s depuis 2018, soit depuis le lancement du S8, abritaient une faille de s\u00e9curit\u00e9 majeure.<\/p>\n

Plus pr\u00e9cis\u00e9ment, cette vuln\u00e9rabilit\u00e9 se cachait dans l'impl\u00e9mentation de la TrustZone<\/strong>. Il s'agit d'un espace d'ex\u00e9cution s\u00e9curis\u00e9 qui sert notamment de coffre-fort cryptographique. Elle g\u00e8re la cr\u00e9ation, la gestion et la manipulation des cl\u00e9s de chiffrement<\/strong> que peuvent utiliser certaines applications Android.<\/p>\n

Or, une erreur a visiblement \u00e9t\u00e9 commise dans les param\u00e8tres d'initialisation de l'algorithme AES-GCM, utilis\u00e9 pour l'impl\u00e9mentation de la TrustZone. \u00c0 cause de cette d\u00e9faillance, un attaquant qui parvient \u00e0 prendre le contr\u00f4le de votre smartphone \u00e9tait \u00e9galement en mesure de r\u00e9cup\u00e9rer toutes les cl\u00e9s de chiffrement g\u00e9n\u00e9r\u00e9es par votre appareil<\/strong>. Une faille exploitable facilement sur les S10<\/a>, S20<\/a> et S21<\/a>, mais aussi sur les S8 et S9 apr\u00e8s avoir proc\u00e9d\u00e9 \u00e0 quelques tests.<\/p>\n