AVIS CERTFR - 2021 - AVI - 506

Objet : Vulnérabilité dans Microsoft Windows

Référence : CERTFR-2021-AVI-506

Risque(s)

- Exécution de code arbitraire à distance
- Élévation de privilèges

Systèmes affectés

- Windows Server, version 20H2 (Server Core Installation)
- Windows Server 2019 (Server Core installation)
- Windows Server 2019
- Windows Server, version 2004 (Server Core installation)
- Windows Server 2016 (Server Core installation)
- Windows Server 2016
- Windows Server 2012 R2 (Server Core installation)
- Windows Server 2012 R2
- 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 for x64-based Systems Service Pack 2 (Server Core installation)
- Windows Server 2008 for x64-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 10 Version 21H1 for 32-bit Systems
- Windows 10 Version 21H1 for ARM64-based Systems
- Windows 10 Version 21H1 for x64-based Systems
- Windows 10 Version 20H2 for x64-based Systems
- Windows 10 Version 20H2 for ARM64-based Systems
- Windows 10 Version 20H2 for 32-bit Systems
- Windows 10 Version 2004 for x64-based Systems
- Windows 10 Version 2004 for ARM64-based Systems
- Windows 10 Version 2004 for 32-bit Systems
- Windows 10 Version 1909 for ARM64-based Systems
- Windows 10 Version 1909 for x64-based Systems
- Windows 10 Version 1909 for 32-bit Systems
- 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 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 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 RT 8.1

Résumé

Une vulnérabilité a été découverte dans Microsoft Windows. Elle permet à un attaquant de provoquer une exécution de code arbitraire à distance et une élévation de privilèges.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Documentation

- Bulletin de sécurité Microsoft CVE-2021-34527 du 01 juillet 2021

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34527

- Référence CVE CVE-2021-34527

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34527

Dernière version du document

https://www.cert.ssi.gouv.fr/avis/CERTFR-2021-AVI-506/