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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.2796 Microsoft Security Bulletin MS15-115 - Critical: Security Update for Microsoft Windows to Address Remote Code Execution (3105864) 11 November 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Windows Publisher: Microsoft Operating System: Windows Impact/Access: Administrator Compromise -- Existing Account Execute Arbitrary Code/Commands -- Remote with User Interaction Access Confidential Data -- Existing Account Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2015-6113 CVE-2015-6109 CVE-2015-6104 CVE-2015-6103 CVE-2015-6102 CVE-2015-6101 CVE-2015-6100 Original Bulletin: https://technet.microsoft.com/en-us/library/security/MS15-115 - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS15-115 - Critical: Security Update for Microsoft Windows to Address Remote Code Execution (3105864) Document Metadata Bulletin Number: MS15-115 Bulletin Title: Security Update for Microsoft Windows to Address Remote Code Execution Severity: Critical KB Article: 3105864 Version: 1.0 Published Date: November 10, 2015 Executive Summary This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker convinces a user to open a specially crafted document or to visit an untrusted webpage that contains embedded OpenType fonts. This security update is rated Critical for all supported releases of Windows. For more information, see the Affected Software section. Affected Software 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 [1] Windows 7 for x64-based Systems Service Pack 1 [1] Windows Server 2008 R2 for x64-based Systems Service Pack 1[1] Windows Server 2008 R2 for Itanium-based Systems Service Pack 1[1] Windows 8 for 32-bit Systems[2] Windows 8 for x64-based Systems[2] Windows 8.1 for 32-bit Systems Windows 8.1 for x64-based Systems Windows Server 2012[2] Windows Server 2012 R2[2] Windows RT[3] Windows RT 8.1[3] Windows 10 for 32-bit Systems[4] Windows 10 for x64-based Systems[4] Windows 10 Version 1511 for 32-bit Systems[4] Windows 10 Version 1511 for x64-based Systems[4] 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)[1] Windows Server 2012 (Server Core installation)[2] Windows Server 2012 R2 (Server Core installation) [1]Note that update 3081320 in MS15-121 and update 3101246 in MS15-122 are releasing concurrently with update 3101746 in this bulletin, MS15-115. Customers who intend to install all three updates manually on Windows 7 Service Pack 1 or Windows Server 2008 R2 Service Pack 1 should install the updates in the following order: 3101246 first, 3081320 second, and 3101746 third (this is taken care of automatically for customers with automatic updating enabled). For more information see the Known Issues section of Microsoft Knowledge Base Article 3105256. [2]Note that update 3081320 in MS15-121 and update 3101246 in MS15-122 are releasing concurrently with update 3101746 in this bulletin, MS15-115. Customers who intend to install all three updates manually on Windows 8 or Windows Server 2012 should install the updates in the following order: 3101246 first, 3101746 second, and 3081320 third (this is taken care of automatically for customers with automatic updating enabled). For more information see the Known Issues section of Microsoft Knowledge Base Article 3105256. [3]This update is only available via Windows Update. [4]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 updates are available via the Microsoft Update Catalog. Vulnerability Information Windows Kernel Memory Elevation of Privilege Vulnerability - CVE-2015-6100 An elevation of privilege vulnerability exists in the way that Windows handles objects in memory. An attacker who successfully exploited this 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 target system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control over an affected system. The update addresses this vulnerability by correcting how Windows handles objects in memory. Microsoft received information about this 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. Windows Kernel Memory Elevation of Privilege Vulnerability - CVE-2015-6101 An elevation of privilege vulnerability exists in the way that Windows handles objects in memory. An attacker who successfully exploited this 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 target system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control over an affected system. The update addresses this vulnerability by correcting how Windows handles objects in memory. Microsoft received information about this 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. Windows Kernel Memory Information Disclosure Vulnerability - CVE-2015-6102 An information disclosure vulnerability exists when Windows fails to properly initialize memory addresses, allowing an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (KASLR) bypass. An attacker who successfully exploited this vulnerability could retrieve the base address of the Kernel driver from a compromised process. To exploit the 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 Windows handles memory addresses. Microsoft received information about this 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. Windows Graphics Memory Remote Code Execution Vulnerability - CVE-2015-6103 A remote code execution vulnerability exists when the Adobe Type Manager Library in Windows improperly handles specially crafted OpenType fonts. An attacker who successfully exploited this vulnerability could 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 to visit an untrusted webpage that contains embedded OpenType fonts. The update addresses the vulnerability by correcting how the Adobe Type Manager Library in Windows handles OpenType fonts. Microsoft received information about this 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. Windows Graphics Memory Remote Code Execution Vulnerability - CVE-2015-6104 A remote code execution vulnerability exists in Microsoft Windows when the Adobe Type Manager Library in Windows improperly handles specially crafted OpenType fonts. An attacker who successfully exploited this vulnerability could 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 to visit an untrusted webpage that contains embedded OpenType fonts. The update addresses the vulnerability by correcting how the Adobe Type Manager Library in Windows handles OpenType fonts. Microsoft received information about this 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. Windows Kernel Memory Information Disclosure Vulnerability - CVE-2015-6109 An information disclosure vulnerability exists when Windows fails to properly initialize memory addresses, allowing an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (KASLR) bypass. An attacker who successfully exploited this vulnerability could retrieve the base address of the Kernel driver from a compromised process. To exploit the 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 Windows handles memory addresses. This vulnerability has been publicly disclosed. It has been assigned Common Vulnerability and Exposure number CVE-2015-6109. At the time this security bulletin was originally issued, Microsoft was unaware of any attack attempting to exploit this vulnerability. Windows Kernel Security Feature Bypass Vulnerability - CVE-2015-6113 A security feature bypass vulnerability exists when the Windows kernel fails to properly validate permissions, allowing an attacker to inappropriately interact with the filesystem from low integrity level user-mode applications. An attacker who successfully exploited this vulnerability could potentially modify files outside a low integrity level application. 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 certain permissions validation performed by the Windows kernel. Microsoft received information about this 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. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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