==================================================================== CERT-Renater Note d'Information No. 2016/VULN057 _____________________________________________________________________ DATE : 12/02/2016 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Windows versions Vista, Server 2008, 7, 8.1, 10, Server 2012. ====================================================================== KB3134228 https://technet.microsoft.com/en-us/library/security/MS16-014 _____________________________________________________________________ Bulletin Title: Security Update for Microsoft Windows to Address Remote Code Execution Severity: Important KB Article: 3134228 Version: 1.0 Published Date: February 9, 2016 Executive Summary This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker is able to log on to a target system and run a specially crafted application. This security update is rated Important for all supported releases of Microsoft Windows. Affected Software Windows Vista Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for Itanium-based Systems Service Pack 2 Windows 7 for 32-bit Systems Service Pack 1 Windows 7 for x64-based Systems Service Pack 1 Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 Windows 8.1 for 32-bit Systems Windows 8.1 for x64-based Systems Windows Server 2012 Windows Server 2012 R2 Windows RT 8.1[1] Windows 10 for 32-bit Systems[2] Windows 10 for x64-based Systems[2] Windows 10 Version 1511 for 32-bit Systems[2] Windows 10 Version 1511 for x64-based Systems[2] Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows Server 2012 (Server Core installation) Windows Server 2012 R2 (Server Core installation) [1]This update is only available via Windows Update. [2]Windows 10 updates are cumulative. In addition to containing non-security updates, they also contain all of the security fixes for all of the Windows 10-affected vulnerabilities shipping with the monthly security release. The update is available via the Windows Update Catalog. Vulnerability Information Windows Elevation of Privilege Vulnerability - CVE-2016-0040 An elevation of privilege vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit the vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerabilities and take control over an affected system. The update addresses the vulnerabilities by correcting how the Windows kernel handles objects in memory. Vulnerability Title CVE number Publicly disclosed Exploited Windows Elevation of Privilege Vulnerability CVE-2016-0040 Yes No Multiple DLL Loading Remote Code Execution Vulnerabilities Multiple remote code execution vulnerabilities exist when Windows improperly validates input before loading dynamic link library (DLL) files. An attacker who successfully exploited these vulnerabilities could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. To exploit the vulnerabilities, an attacker would first have to log on to the target system and then run a specially crafted application. The updates address the vulnerabilities by correcting how Windows validates input before loading DLL files. The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list: Vulnerability title CVE number Publicly disclosed Exploited DLL Loading Remote Code Execution Vulnerability CVE-2016-0041 No No Windows DLL Loading Remote Code Execution Vulnerability CVE-2016-0042 No No Windows DLL Loading Denial of Service Vulnerability - CVE-2016-0044 A denial of service vulnerability exists in Windows when Microsoft Sync Framework processes specially crafted input that uses the change batch structure. An attacker who successfully exploited the vulnerability could cause the target SyncShareSvc service to stop responding. Note that the denial of service would not allow an attacker to execute code or to elevate their user rights. However, it could prevent authenticated users from using the SyncShareSvc service. To exploit the vulnerability an authenticated attacker must send a specially-crafted network packet to a server running the SyncShareSvc service. The update addresses the vulnerability by correcting how Microsoft Sync Framework validates input. The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list: Vulnerability title CVE number Publicly disclosed Exploited Windows DLL Loading Denial of Service Vulnerability CVE-2016-0044 No No Windows Kerberos Security Feature Bypass - CVE-2016-0049 A security feature bypass exists in Windows when Kerberos fails to check the password change of a user signing into a workstation. An attacker could bypass Kerberos authentication on a target machine and decrypt drives protected by BitLocker. An attacker could bypass Kerberos authentication by connecting a workstation to a malicious Kerberos Key Distribution Center (KDC). The update addresses the bypass by adding an additional authentication check. The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list: Vulnerability title CVE number Publicly disclosed Exploited Windows Kerberos Security Feature Bypass Vulnerability CVE-2016-0049 No No ========================================================== Serveur de référence du CERT-Renater https://services.renater.fr/ssi/ ========================================================== + CERT-RENATER | tel : 01-53-94-20-44 + + 23 - 25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email: cert@support.renater.fr + ==========================================================