Microsoft - CVE-2018-8639

Date de publication :

Un défaut de libération de la mémoire du composant Win32k dans Windows permet à un attaquant authentifié, en envoyant des requêtes spécifiquement forgées, d’élever ses privilèges.

Informations

La faille est activement exploitée : Oui

Un correctif existe : Oui

Une mesure de contournement existe : Non

Risques

Élévation de privilèges

Exploitation

La vulnérabilité exploitée est du type
CWE-404: Improper Resource Shutdown or Release

Détails sur l'exploitation
•    Vecteur d'attaque : Local
•    Complexité de l'attaque : Faible
•    Privilèges nécessaires pour réaliser l'attaque : Authentification utilisateur simple
•    Interaction d'un utilisateur ayant accès au produit est-elle nécessaire : Non
•    L'exploitation de la faille permet d'obtenir des droits privilégiés : Oui

Preuve de concept
Une preuve de concept est disponible en sources ouvertes.

Systèmes ou composants affectés

Windows 10 Version 1709 for ARM64-based Systems
Windows 10 Version 1803 for ARM64-based Systems
Windows Server 2019 (Server Core installation)
Windows Server 2019
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 1809 for 32-bit Systems
Windows Server 2012 R2 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 (Server Core installation)
Windows Server 2012
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-Based Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows RT 8.1
Windows 8.1 for x64-based systems
Windows 8.1 for 32-bit systems
Windows 7 for x64-based Systems Service Pack 1
Windows 7 for 32-bit Systems Service Pack 1
Windows Server 2016 (Server Core installation)
Windows Server 2016
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1607 for 32-bit Systems
Windows 10 for x64-based Systems
Windows 10 for 32-bit Systems
Windows Server, version 1709 (Server Core Installation)
Windows 10 Version 1709 for x64-based Systems
Windows 10 Version 1709 for 32-bit Systems
Windows Server, version 1803 (Server Core Installation)
Windows 10 Version 1803 for x64-based Systems
Windows 10 Version 1803 for 32-bit Systems
Windows 10 Version 1703 for x64-based Systems
Windows 10 Version 1703 for 32-bit Systems

Solutions ou recommandations

Appliquer les correctifs suivants :

•    Windows 10 Version 1709 for ARM64-based Systems : [KB4471329]
•    Windows 10 Version 1803 for ARM64-based Systems : [KB4471324]
•    Windows Server 2019 (Server Core installation) : [KB4471332]
•    Windows Server 2019 : [KB4471332]
•    Windows 10 Version 1809 for ARM64-based Systems : [KB4471332]
•    Windows 10 Version 1809 for x64-based Systems : [KB4471332]
•    Windows 10 Version 1809 for 32-bit Systems : [KB4471332]
•    Windows Server 2012 R2 (Server Core installation) : [KB4471320] [KB4471322]
•    Windows Server 2012 R2 : [KB4471320] [KB4471322]
•    Windows Server 2012 (Server Core installation) : [KB4471330] [KB4471326]
•    Windows Server 2012 : [KB4471330] [KB4471326]
•    Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) : [KB4471318] [KB4471328]
•    Windows Server 2008 R2 for x64-based Systems Service Pack 1 : [KB4471318] [KB4471328]
•    Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 : [KB4471318] [KB4471328]
•    Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) : [KB4471325] [KB4471319]
•    Windows Server 2008 for x64-based Systems Service Pack 2 : [KB4471325] [KB4471319]
•    Windows Server 2008 for Itanium-Based Systems Service Pack 2 : [KB4471325] [KB4471319]
•    Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) : [KB4471325] [KB4471319]
•    Windows Server 2008 for 32-bit Systems Service Pack 2 : [KB4471325] [KB4471319]
•    Windows RT 8.1 : [KB4471320]
•    Windows 8.1 for x64-based systems : [KB4471320] [KB4471322]
•    Windows 8.1 for 32-bit systems : [KB4471320] [KB4471322]
•    Windows 7 for x64-based Systems Service Pack 1 : [KB4471318] [KB4471328]
•    Windows 7 for 32-bit Systems Service Pack 1 : [KB4471318] [KB4471328]
•    Windows Server 2016 (Server Core installation) : [KB4471321]
•    Windows Server 2016 : [KB4471321]
•    Windows 10 Version 1607 for x64-based Systems : [KB4471321]
•    Windows 10 Version 1607 for 32-bit Systems : [KB4471321]
•    Windows 10 for x64-based Systems : [KB4471323]
•    Windows 10 for 32-bit Systems : [KB4471323]
•    Windows Server, version 1709 (Server Core Installation) : [KB4471329]
•    Windows 10 Version 1709 for x64-based Systems : [KB4471329]
•    Windows 10 Version 1709 for 32-bit Systems : [KB4471329]
•    Windows Server, version 1803 (Server Core Installation) : [KB4471324]
•    Windows 10 Version 1803 for x64-based Systems : [KB4471324]
•    Windows 10 Version 1803 for 32-bit Systems : [KB4471324]
•    Windows 10 Version 1703 for x64-based Systems : [KB4471327]
•    Windows 10 Version 1703 for 32-bit Systems : [KB4471327]

Des informations complémentaires sont disponibles dans le bulletin de Microsoft.