{"id":1415,"date":"2025-01-16T08:24:32","date_gmt":"2025-01-16T07:24:32","guid":{"rendered":"https:\/\/ayrilys.com\/?p=1415"},"modified":"2025-08-27T11:22:48","modified_gmt":"2025-08-27T09:22:48","slug":"pour-debuter-2025-microsoft-livre-un-patch-tuesday-record","status":"publish","type":"post","link":"https:\/\/ayrilys.com\/index.php\/pour-debuter-2025-microsoft-livre-un-patch-tuesday-record\/","title":{"rendered":"Pour d\u00e9buter 2025, Microsoft livre un Patch Tuesday record"},"content":{"rendered":"\n

Pour d\u00e9buter 2025, Microsoft livre un Patch Tuesday record<\/strong><\/p>\n\n\n\n

Microsoft a publi\u00e9 une premi\u00e8re salve impressionnante de patchs de s\u00e9curit\u00e9 pour ce d\u00e9but d’ann\u00e9e 2025, corrigeant notamment trois zero day actuellement exploit\u00e9s affectant un composant du noyau NT de Windows Hyper-V .<\/p>\n\n\n\n

\"Microsoft
Microsoft d\u00e9marre fort 2025 avec un patch tuesday au nombre record de failles corrig\u00e9es depuis 2017. (cr\u00e9dit : Pixabay)<\/figcaption><\/figure>\n\n\n\n

La premi\u00e8re livraison de correctifs de l’ann\u00e9e est cons\u00e9quente pour Microsoft. Excellente m\u00eame puisque pas moins de 159 vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 combl\u00e9es incluant 8 zero day dont 3 exploit\u00e9es \u00ab Ce n\u2019est pas seulement le plus grand nombre de CVE corrig\u00e9s en janvier, mais il s’agit du plus grand nombre de CVE corrig\u00e9s dans le cadre de n\u2019importe quelle publication Patch Tuesday depuis 2017 \u00bb, a soulign\u00e9 Satnam Narang, ing\u00e9nieur de recherche senior de Tenable. Les zero day exploit\u00e9es affectent un composant du noyau NT de Windows Hyper-V. Ces 8 failles ont un niveau de s\u00e9v\u00e9rit\u00e9 consid\u00e9r\u00e9 comme important et 7 d’entre elles ont un score CVSS de 7.8 et une de 6.5.<\/p>\n\n\n\n

Les CVE-2025-21333<\/a>, CVE-2025-21334<\/a> et CVE-2025-21335<\/a> peuvent donner la capacit\u00e9 \u00e0 un utilisateur malveillant authentifi\u00e9 d’ex\u00e9cuter du code avec des privil\u00e8ges syst\u00e8me. Microsoft<\/a> n’a pas livr\u00e9 beaucoup d’information sur elles. \u00ab En tant que bugs d\u2019\u00e9l\u00e9vation de privil\u00e8ges, ils sont utilis\u00e9s dans le cadre d\u2019activit\u00e9s post-compromission, lorsqu\u2019un attaquant a d\u00e9j\u00e0 acc\u00e9d\u00e9 \u00e0 un syst\u00e8me cible \u00bb, fait savoir Satnam Narang. \u00ab C\u2019est un peu comme si un attaquant parvenait \u00e0 entrer dans un b\u00e2timent s\u00e9curis\u00e9, mais ne pouvait pas acc\u00e9der \u00e0 des parties plus s\u00e9curis\u00e9es de l\u2019installation car il devait prouver qu\u2019il en a l\u2019autorisation. Dans ce cas, il parvient \u00e0 tromper le syst\u00e8me pour lui faire croire qu\u2019il devrait avoir l\u2019autorisation. \u00bb<\/p>\n\n\n\n

Microsoft Access pas \u00e9pargn\u00e9 par les zero day<\/h2>\n\n\n\n

Les 5 autres correctifs relatives \u00e0 des zero day non exploit\u00e9es concernent les failles CVE-2025-21186<\/a>, CVE-2025-21366<\/a> et CVE-2025-21395<\/a> affectant Microsoft Access qui peuvent d\u00e9boucher sur de l’ex\u00e9cution de code distant si un attaquant parvient par exemple \u00e0 convaincre une victime de t\u00e9l\u00e9charger et d\u2019ex\u00e9cuter un fichier malveillant via une technique de social engineering. \u00ab Ce qui rend ces vuln\u00e9rabilit\u00e9s particuli\u00e8rement int\u00e9ressantes, c\u2019est qu\u2019elles ont apparemment \u00e9t\u00e9 d\u00e9couvertes \u00e0 l\u2019aide de l\u2019IA, \u00e9tant attribu\u00e9es \u00e0 une plateforme appel\u00e9e Unpatched.ai. Celle-ci avait \u00e9galement \u00e9t\u00e9 cr\u00e9dit\u00e9e de la d\u00e9couverte d\u2019une faille dans la mise \u00e0 jour Patch Tuesday de d\u00e9cembre 2024 (CVE-2024-49142) \u00bb, pr\u00e9cise Satnam Narang.<\/p>\n\n\n\n

Une autre (CVE-2025-21275<\/a>) pr\u00e9sente un risque d’\u00e9l\u00e9vation de privil\u00e8ges dans Windows App Package Installer, et une derni\u00e8re CVE-2025-21308<\/a> (CVSS 6.5) est de type spoofing de Windows Themes. \u00ab L’usurpation d’identit\u00e9 consiste ici \u00e0 relayer les informations d’identification NTLM. Par cons\u00e9quent, les syst\u00e8mes dont le NTLM est restreint sont moins susceptibles d’\u00eatre exploit\u00e9s. Au minimum, vous devez limiter le trafic NTLM sortant vers les serveurs distants. Heureusement, Microsoft fournit des conseils \u00e0 ce sujet<\/a>. Activez ces restrictions, puis corrigez vos syst\u00e8mes \u00bb, peut-on lire dans un blog de la Zero Day Initiative<\/a> (ZDI).<\/p>\n\n\n\n

11 failles critiques \u00e0 corriger d’urgence<\/h2>\n\n\n\n

Sans \u00eatre des zero day, d’autres vuln\u00e9rabilit\u00e9s corrig\u00e9es par Microsoft n\u00e9cessitent une grande vigilance des entreprises, dont 11 critiques ayant un score CVSS grimpant \u00e0 9.8 pour trois d’entre elles. A savoir la CVE-2025-21311<\/a> (\u00e9l\u00e9vation de privil\u00e8ges dans Windows NTLM V1), la CVE-2025-21307<\/a> (ex\u00e9cution de code distant dans Windows Reliable Multicast Transport Driver aka RMCAST), et la CVE-2025-21298<\/a> (ex\u00e9cution de code distant dans Windows OLE). \u00ab Ce bogue permet \u00e0 un attaquant distant d’ex\u00e9cuter du code sur un syst\u00e8me cible en envoyant un courrier sp\u00e9cialement con\u00e7u \u00e0 un syst\u00e8me affect\u00e9 avec Outlook. Heureusement, le volet de pr\u00e9visualisation n’est pas un vecteur d’attaque, mais la pr\u00e9visualisation d’une pi\u00e8ce jointe pourrait d\u00e9clencher l’ex\u00e9cution de code. La faille sp\u00e9cifique existe dans l’analyse des fichiers RTF. Le probl\u00e8me r\u00e9sulte de l’absence de validation correcte des donn\u00e9es fournies par l’utilisateur, ce qui peut entra\u00eener une corruption de la m\u00e9moire. Pour att\u00e9nuer le probl\u00e8me, vous pouvez configurer Outlook de mani\u00e8re \u00e0 ce qu’il lise tous les courriers standard en texte brut, mais les utilisateurs se r\u00e9volteront probablement contre un tel r\u00e9glage. La meilleure solution consiste \u00e0 tester et \u00e0 d\u00e9ployer rapidement ce correctif \u00bb, pr\u00e9vient la ZDI.<\/p>\n\n\n\n

Une erreur dans l’article?Proposez-nous une correction<\/a><\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

Article r\u00e9dig\u00e9 par<\/p>\n\n\n\n

Dominique Filippone<\/a><\/p>\n\n\n\n

Chef des actualit\u00e9s LMI<\/p>\n","protected":false},"excerpt":{"rendered":"

Pour d\u00e9buter 2025, Microsoft livre un Patch Tuesday record Microsoft a publi\u00e9 une premi\u00e8re salve impressionnante de patchs de s\u00e9curit\u00e9 pour ce d\u00e9but d’ann\u00e9e 2025, corrigeant notamment trois zero day actuellement exploit\u00e9s affectant un composant du noyau NT de Windows Hyper-V . La premi\u00e8re livraison de correctifs de l’ann\u00e9e est cons\u00e9quente pour Microsoft. Excellente m\u00eame…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"hide","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"fullscreen","enabled":true,"token":"eyJ0eHQiOiJQb3VyIGRcdTAwZTlidXRlciAyMDI1LCBNaWNyb3NvZnQgbGl2cmUgdW4gUGF0Y2ggVHVlc2RheSByZWNvcmQiLCJ0ZW1wbGF0ZSI6ImZ1bGxzY3JlZW4iLCJmb250IjoiIiwiYmxvZ19pZCI6MjM1MzM1MDIzfQ.7304OZsnJFJJI-eJ-s3I7bZcdVt9wPZsBbK8eNS2ntYMQ"},"version":2}},"categories":[22],"tags":[],"class_list":["post-1415","post","type-post","status-publish","format-standard","hentry","category-securite-informatique"],"yoast_head":"\r\nWindows Update : Les failles zero day corrig\u00e9es par Microsoft Prestataire informatique Viroflay en r\u00e9gion parisienne depuis 2003 pour les PME\/PMI S\u00e9curit\u00e9 informatique -<\/title>\r\n<meta name=\"description\" content=\"D\u00e9couvrez la premi\u00e8re salve impressionnante de patchs de s\u00e9curit\u00e9 de Microsoft pour 2025, corrigeant les zero day affectant Windows Hyper-V.\" \/>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/ayrilys.com\/index.php\/pour-debuter-2025-microsoft-livre-un-patch-tuesday-record\/\" \/>\r\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"Pour d\u00e9buter 2025, Microsoft livre un Patch Tuesday record\" \/>\r\n<meta property=\"og:description\" content=\"Pour d\u00e9buter 2025, Microsoft livre un Patch Tuesday record Prestataire 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