===================================================================== CERT-Renater Note d'Information No. 2015/VULN070 _____________________________________________________________________ DATE : 13/05/2015 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Systems running Microsoft Windows, Microsoft Office, Microsoft Live Meeting Microsoft Lync Microsoft Silverlight Microsoft .NET Framework. ====================================================================== KB3057110 https://technet.microsoft.com/en-us/library/security/MS15-044 ______________________________________________________________________ MS15-044: Vulnerabilities in GDI+ Could Allow Remote Code Execution (3057110) Bulletin Number: MS15-044 Bulletin Title: Vulnerabilities in GDI+ Could Allow Remote Code Execution Severity: Critical KB Article: 3057110 Version: 1.0 Published Date: May 12, 2015 Executive Summary This security update resolves vulnerabilities in Microsoft Windows, Microsoft .NET Framework, Microsoft Office, Microsoft Lync, and Microsoft Silverlight. The more 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 TrueType fonts. This security update is rated Critical for supported releases of Microsoft Windows and all affected editions of Microsoft .NET Framework, Microsoft Office, Microsoft Lync, and Microsoft Silverlight. For more information, see the Affected Software section. Affected Software Microsoft Windows Windows Server 2003 Service Pack 2 Windows Server 2003 x64 Edition Service Pack 2 Windows Server 2003 with SP2 for Itanium-based Systems Windows Vista Service Pack 2 Windows Vista x64 Edition 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 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[2] Windows RT 8.1[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 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows Server 2012 (Server Core installation) Windows Server 2012 (Server Core installation) Windows Server 2012 R2 (Server Core installation) Windows Server 2012 R2 (Server Core installation) [1].NET Framework 4 and .NET Framework 4 Client Profile affected. [2]This update is available via Windows Update only. 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 Live Meeting 2007 Console[1] 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 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) [1]This update is available from the Microsoft Download Center only. Microsoft Developer Tools and Software Microsoft Silverlight 5 when installed on Mac Microsoft Silverlight 5 Developer Runtime when installed on Mac Microsoft Silverlight 5 when installed on all supported releases of Microsoft Windows clients Microsoft Silverlight 5 Developer Runtime when installed on all supported releases of Microsoft Windows clients Microsoft Silverlight 5 when installed on all supported releases of Microsoft Windows servers Microsoft Silverlight 5 Developer Runtime when installed on all supported releases of Microsoft Windows servers Vulnerability Information OpenType Font Parsing Vulnerability - CVE-2015-1670 An information disclosure vulnerability exists in Microsoft Windows when the Windows DirectWrite library improperly handles OpenType fonts. An attacker who successfully exploited this vulnerability could potentially read data which was not intended to be disclosed. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. To exploit the vulnerability an attacker could host a specially crafted website that is designed to exploit the vulnerability and then convince a user to view the website. This could also include compromised websites and websites that accept or host user-provided content or advertisements. In all cases, however, an attacker would have no way to force users to visit such websites. Instead, an attacker would have to convince users to visit a website, typically by way of enticements in Instant Messenger or email messages. The update addresses the vulnerability by correcting how the Windows DirectWrite 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. TrueType Font Parsing Vulnerability - CVE-2015-1671 A remote code execution vulnerability exists when components of Windows, .NET Framework, Office, Lync, and Silverlight fail to properly handle TrueType fonts. An attacker who successfully exploited this vulnerability could take complete 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 this vulnerability, including by convincing a user to open a specially crafted document or convincing them to visit an untrusted webpage that contains embedded TrueType fonts. The update addresses the vulnerability by correcting how the affected software products handle TrueType fonts. Microsoft received information about the vulnerability through coordinated vulnerability disclosure. When this security bulletin was issued, Microsoft was aware of limited attacks that attempt to exploit this vulnerability. ========================================================= 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 + ==========================================================