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AUSCERT External Security Bulletin Redistribution
ESB-2015.2064
Microsoft Security Bulletin MS15-080: Vulnerabilities in Microsoft Graphics
Component Could Allow Remote Code Execution (3078662)
12 August 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Microsoft Windows
Microsoft .NET Framework
Microsoft Office
Microsoft Lync
Microsoft Silverlight
Publisher: Microsoft
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Access Privileged Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2015-2465 CVE-2015-2464 CVE-2015-2463
CVE-2015-2462 CVE-2015-2461 CVE-2015-2460
CVE-2015-2459 CVE-2015-2458 CVE-2015-2456
CVE-2015-2455 CVE-2015-2454 CVE-2015-2453
CVE-2015-2435 CVE-2015-2433 CVE-2015-2432
CVE-2015-2431
Original Bulletin:
https://technet.microsoft.com/en-us/library/security/MS15-080
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Microsoft Security Bulletin MS15-080: Vulnerabilities in Microsoft Graphics
Component Could Allow Remote Code Execution (3078662)
Bulletin Number: MS15-080
Bulletin Title: Vulnerabilities in Microsoft Graphics Component Could Allow
Remote Code Execution
Severity: Critical
KB Article: 3078662
Version: 1.0
Published Date: August 11, 2015
Executive Summary
This security update resolves vulnerabilities in Microsoft Windows, Microsoft
.NET Framework, Microsoft Office, Microsoft Lync, and Microsoft Silverlight.
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 TrueType or OpenType 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
Windows Vista
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
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Windows 8 and Windows 8.1
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 and Windows Server 2012 R2
Windows Server 2012
Windows Server 2012 R2
Windows RT and Windows RT 8.1
Windows RT[1]
Windows RT 8.1[1]
Windows 10
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. The
update is available via the Windows Update Catalog only. See Microsoft
Knowledge Base Article 3081435 for more information and download links.
Microsoft .NET Framework
Microsoft .NET Framework 3.0 Service Pack 2
Microsoft .NET Framework 4[1]
Microsoft .NET Framework 4.5/4.5.1/4.5.2
Microsoft .NET Framework 4.6
Microsoft .NET Framework 3.5.1
Microsoft .NET Framework 3.5
Microsoft .NET Framework 3.5[2]
[1].NET Framework 4 and .NET Framework 4 Client Profile affected.
[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. The update is available via the Windows Update Catalog only. See
Microsoft Knowledge Base Article 3081435 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 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
Microsoft Silverlight 5 Developer Runtime
Vulnerability Information
Multiple OpenType Font Parsing Vulnerabilities
Remote code execution vulnerabilities exist in Microsoft Windows when the
Windows Adobe Type Manager Library improperly handles specially crafted
OpenType fonts. An attacker who successfully exploited these vulnerabilities
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 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.
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
OpenType Font Parsing Vulnerability CVE-2015-2432 No No
OpenType Font Parsing Vulnerability CVE-2015-2458 No No
OpenType Font Parsing Vulnerability CVE-2015-2459 No No
OpenType Font Parsing Vulnerability CVE-2015-2460 No No
OpenType Font Parsing Vulnerability CVE-2015-2461 No No
OpenType Font Parsing Vulnerability CVE-2015-2462 No No
Multiple TrueType Font Parsing Vulnerabilities
Remote code execution vulnerabilities exist when components of Windows, .NET
Framework, Office, Lync, and Silverlight fail to properly handle TrueType
fonts. An attacker who successfully exploited these vulnerabilities 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 the vulnerabilities,
including by convincing a user to open a specially crafted document or by
convincing them to visit an untrusted webpage that contains embedded TrueType
fonts.
The update addresses the vulnerabilities by correcting how the Windows
DirectWrite library handles TrueType fonts.
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
TrueType Font Parsing Vulnerability CVE-2015-2435 No No
TrueType Font Parsing Vulnerability CVE-2015-2455 No No
TrueType Font Parsing Vulnerability CVE-2015-2456 No No
TrueType Font Parsing Vulnerability CVE-2015-2463 No No
TrueType Font Parsing Vulnerability CVE-2015-2464 No No
Microsoft Office Graphics Component Remote Code Execution Vulnerability -
CVE-2015-2431
A remote code execution vulnerability exists when Microsoft Office fails to
properly handle Office Graphics Library (OGL) 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 users to open a specially crafted document or by
convincing them to visit an untrusted webpage that contains embedded OGL
fonts.
The update addresses the vulnerability by correcting how Office handles OGL
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.
Kernel ASLR Bypass Vulnerability - CVE-2015-2433
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.
Windows CSRSS Elevation of Privilege Vulnerability - CVE-2015-2453
An elevation of privilege vulnerability exists in the way that the Windows
Client/Server Run-time Subsystem (CSRSS) terminates a process when a user logs
off. An attacker who successfully exploited this vulnerability could run code
that is designed to monitor the actions of a user who subsequently logs on to
the system. This could allow the disclosure of sensitive information or access
to data on the affected systems that was accessible to the logged-on user.
This sensitive data could include the logon credentials of subsequent users,
which an attacker might later use to elevate privilege or to execute code as a
different user on the system. Note that this vulnerability would not allow an
attacker to execute code or to elevate their user rights directly. It could be
used to collect useful information to try to further compromise the affected
system. If a user with administrative privileges subsequently logs on to the
system, the attacker could run arbitrary code in kernel mode. An attacker
could then install programs; view, change, or delete data; or create new
accounts with full system rights.
To exploit this vulnerability, an attacker would first have to log on to the
system and run a specially crafted application that is designed to continue
running after the attacker logs off. When a new user logs on with their own
credentials, the attacker's process could monitor all actions performed by the
newly logged-on user. If the newly logged-on user is an administrator, the
information disclosed could be used to try to further compromise the affected
system.
Systems where multiple users have permissions to log on locally and run
untrusted applications are at the most risk from this vulnerability.
The update addresses the vulnerability by correcting how user processes are
terminated upon logoff. Microsoft received information about this
vulnerability through coordinated vulnerability disclosure. When this security
bulletin was originally issued Microsoft had not received any information to
indicate that this vulnerability had been publicly used to attack customers.
Windows KMD Security Feature Bypass Vulnerability - CVE-2015-2454
A security feature bypass vulnerability exists when the Windows kernel-mode
driver fails to properly validate and enforce impersonation levels. An
attacker who successfully exploited this vulnerability could bypass
impersonation-level security and gain elevated privileges on a targeted
system.
The security feature bypass by itself does not allow arbitrary code execution.
However, an attacker could use this bypass vulnerability in conjunction with
another vulnerability. To exploit this vulnerability, an attacker would have
to log on to an affected system and run a specially crafted application.
The update addresses the vulnerability by correcting how Windows validates
impersonation levels. Microsoft received information about this vulnerability
through coordinated vulnerability disclosure. When this security bulletin was
originally issued Microsoft had not received any information to indicate that
this vulnerability had been publicly used to attack customers.
Windows Shell Security Feature Bypass Vulnerability - CVE-2015-2465
A security feature bypass vulnerability exists when the Windows shell fails to
properly validate and enforce impersonation levels. An attacker who
successfully exploited this vulnerability could bypass impersonation-level
security and gain elevated privileges on a targeted system.
The security feature bypass by itself does not allow arbitrary code execution.
However, an attacker could use this bypass vulnerability in conjunction with
another vulnerability. To exploit this vulnerability, an attacker would have
to log on to an affected system and run a specially crafted application.
The update addresses the vulnerability by correcting how the Windows shell
validates impersonation levels. Microsoft received information about this
vulnerability through coordinated vulnerability disclosure. When this security
bulletin was originally issued Microsoft had not received any information to
indicate that this vulnerability had been publicly used to attack customers.
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