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{"id":2605480,"date":"2024-08-12T10:31:53","date_gmt":"2024-08-12T08:31:53","guid":{"rendered":"https:\/\/www.phonandroid.com\/?p=2605480"},"modified":"2024-08-12T10:20:54","modified_gmt":"2024-08-12T08:20:54","slug":"des-millions-de-pc-touches-par-une-faille-de-securite-critique-des-processeurs-etes-vous-concernes","status":"publish","type":"post","link":"https:\/\/www.phonandroid.com\/des-millions-de-pc-touches-par-une-faille-de-securite-critique-des-processeurs-etes-vous-concernes.html","title":{"rendered":"Des millions de PC touch\u00e9s par une faille de s\u00e9curit\u00e9 critique des processeurs, \u00eates-vous concern\u00e9s ?"},"content":{"rendered":"

Des chercheurs en s\u00e9curit\u00e9 ont d\u00e9couvert une grave vuln\u00e9rabilit\u00e9 dans les processeurs AMD, qui pourrait permettre \u00e0 des pirates d'installer des logiciels malveillants quasiment ind\u00e9tectables.<\/strong><\/p>\n

\"Malware\"
Cr\u00e9dits : 123RF<\/figcaption><\/figure>\n

Baptis\u00e9e “SinkClose”, cette nouvelle faille affecte plusieurs g\u00e9n\u00e9rations de puces AMD<\/a>, ce qui pourrait avoir un impact sur des millions d'appareils dans le monde. La vuln\u00e9rabilit\u00e9, officiellement r\u00e9pertori\u00e9e sous le nom de CVE-2023-31315, a \u00e9t\u00e9 d\u00e9couverte par les chercheurs Enrique Nissim et Krzysztof Okupski de l'institut IOActive. Ce qui rend cette faille particuli\u00e8rement pr\u00e9occupante, c'est sa long\u00e9vit\u00e9 : elle serait pass\u00e9e inaper\u00e7ue pendant pr\u00e8s de vingt ans, affectant m\u00eame des processeurs AMD datant de 2006.<\/strong><\/p>\n

\u00c0 la base, SinkClose exploite une faiblesse dans le mode de gestion du syst\u00e8me (SMM) des puces AMD. Le SMM est une zone hautement privil\u00e9gi\u00e9e du processeur, g\u00e9n\u00e9ralement r\u00e9serv\u00e9e aux op\u00e9rations critiques du micrologiciel, telles que la gestion de l'alimentation, le contr\u00f4le thermique et l'initialisation du mat\u00e9riel. En manipulant une fonction appel\u00e9e TClose, les attaquants peuvent contourner les mesures de s\u00e9curit\u00e9 et ex\u00e9cuter leur propre code au niveau du SMM, ce qui leur donne un contr\u00f4le quasi-total sur le syst\u00e8me.<\/strong><\/p>\n

Lire \u00e9galement<\/strong> – Cette faille rend votre PC tr\u00e8s vuln\u00e9rable en faisant remonter Windows dans le temps<\/a><\/p>\n