==================================================================== CERT-Renater Note d'Information No. 2015/VULN174 _____________________________________________________________________ DATE : 09/09/2015 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Windows, systems running Microsoft Lync, Microsoft Office, Microsoft Live Meeting. ====================================================================== KB3089656 https://technet.microsoft.com/en-us/library/security/MS15-097 ______________________________________________________________________ Bulletin Number: MS15-097 Bulletin Title: Vulnerabilities in Microsoft Graphics Component Could Allow Remote Code Execution Severity: Critical KB Article: 3089656 Version: 1.0 Published Date: September 8, 2015 Executive Summary This security update resolves vulnerabilities in Microsoft Windows, Microsoft Office, and Microsoft Lync. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted document or visits an untrusted webpage that contains embedded OpenType fonts. This security update is rated Critical for: All supported editions of Windows Vista, Windows Server 2008 All affected editions of Microsoft Lync 2013, Microsoft Lync 2010, Microsoft Live Meeting 2007Microsoft Lync All affected editions of Microsoft Office 2007, Microsoft Office 2010 This security update is rated Important for all supported releases of Microsoft Windows with the exception of Windows Vista and Windows Server 2008. For more information, see the Affected Software section. Affected Software Microsoft Windows Windows Vista Service Pack 2 Windows Vista x64 Edition Service Pack 2 Windows Server 2008 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 for 32-bit Systems Windows 8 for x64-based Systems Windows 8.1 for 32-bit Systems Windows 8.1 for x64-based Systems Windows Server 2012 Windows Server 2012 R2 Windows RT[1] Windows RT 8.1[1] Windows 10 for 32-bit Systems[2] Windows 10 for x64-based Systems[2] Server Core installation option 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 available via Windows Update only. [2]The Windows 10 update is cumulative. In addition to containing non-security updates, it also contains all of the security fixes for all of the Windows 10-affected vulnerabilities shipping with this months security release. See Microsoft Knowledge Base Article 3081455 for more information and download links. Microsoft Office Microsoft Office 2007 Service Pack 3 Microsoft Office 2010 Service Pack 2 (32-bit editions) Microsoft Office 2010 Service Pack 2 (64-bit editions) Microsoft Communications Platforms and Software Microsoft Lync 2013 Service Pack 1 (32-bit) ( Skype for Business) Microsoft Lync Basic 2013 Service Pack 1 (32-bit) (Skype for Business Basic) Microsoft Lync 2013 Service Pack 1 (64-bit) (Skype for Business) Microsoft Lync Basic 2013 Service Pack 1 (64-bit) (Skype for Business Basic) Microsoft Lync 2010 (32-bit) Microsoft Lync 2010 (64-bit) Microsoft Lync 2010 Attendee[1] (user level install) Microsoft Lync 2010 Attendee (admin level install) Microsoft Live Meeting 2007 Console[1] [1]This update is available from the Microsoft Download Center only. Vulnerability Information OpenType Font Parsing Vulnerability - CVE-2015-2506 A denial of service vulnerability exists in Microsoft Windows when the Windows Adobe Type Manager Library improperly handles specially crafted OpenType fonts. An attacker who successfully exploited the vulnerability could crash the affected system. There are multiple ways an attacker could exploit the vulnerabilities, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage that contains embedded OpenType fonts. The update addresses the vulnerabilities by correcting how the Windows Adobe Type Manager Library handles OpenType fonts. Microsoft received information about the vulnerability through coordinated vulnerability disclosure. When this security bulletin was issued, Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers. Multiple Font Driver Elevation of Privilege Vulnerabilities Elevation of privilege vulnerabilities exist in Microsoft Windows when the Windows Adobe Type Manager Library fails to properly handle objects in memory. An attacker who successfully exploited the vulnerabilities could execute arbitrary code and take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit these vulnerabilities, an attacker would first have to log on to a target system and then run a specially crafted application. The security update addresses the vulnerabilities by correcting how ATMFD handles objects in memory. The following tables contain links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list: Vulnerability title CVE number Publicly disclosed Exploited Font Driver Elevation of CVE-2015-2507 No No Privilege Vulnerability Font Driver Elevation of CVE-2015-2508 No No Privilege Vulnerability Font Driver Elevation of CVE-2015-2512 No No Privilege Vulnerability Graphics Component Buffer Overflow Vulnerability - CVE-2015-2510 A remote code execution vulnerability exists in Microsoft Windows when components of Windows, Office, and Lync improperly handle specially crafted OpenType fonts. An attacker who successfully exploited this vulnerability could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage that contains embedded OpenType fonts. The update addresses the vulnerability by correcting how the Windows Adobe Type Manager Library handles OpenType fonts. Microsoft received information about the vulnerability through coordinated vulnerability disclosure. When this security bulletin was issued, Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers. Multiple Win32k Memory Corruption Elevation of Privilege Vulnerabilities Multiple elevation of privilege vulnerabilities exist in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited the vulnerabilities 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 these vulnerabilities, 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 of an affected system. The update addresses the vulnerabilities by correcting how the Windows kernel-mode driver handles objects in memory. The following tables contain links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list: Vulnerability title CVE number Publicly disclosed Exploited Win32k Memory Corruption Elevation CVE-2015-2511 No No of Privilege Vulnerability Win32k Memory Corruption Elevation CVE-2015-2517 No No of Privilege Vulnerability Win32k Memory Corruption Elevation CVE-2015-2518 No No of Privilege Vulnerability Win32k Memory Corruption Elevation CVE-2015-2546 Yes Yes of Privilege Vulnerability Win32k Elevation of Privilege Vulnerability - CVE-2015-2527 An elevation of privilege vulnerability exists when the Windows kernel mode driver (Win32k.sys) fails to properly validate and enforce integrity levels during certain process initialization scenarios. 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 this 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 vulnerability and take control of an affected system. The update addresses the vulnerability by correcting how Windows validates integrity levels to prevent inappropriate process initialization. Microsoft received information about the vulnerability through coordinated vulnerability disclosure. When this security bulletin was issued, Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers. Kernel ASLR Bypass Vulnerability - CVE-2015-2529 A security feature bypass vulnerability exists when the Windows kernel fails to properly initialize a memory address, allowing an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (KASLR) bypass. This issue affects all supported Windows operating systems and is considered to be an Important-class Security Feature Bypass (SFB). An attacker who successfully exploited this vulnerability could retrieve the base address of the kernel driver from a compromised process. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how the Windows kernel handles memory addresses. Microsoft received information about this vulnerability through coordinated vulnerability disclosure. This vulnerability has been publicly disclosed. When this security bulletin was issued, Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers. ========================================================= 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 + ==========================================================