Microsoft Security Bulletin MS15-084 - Important

Vulnerabilities in XML Core Services Could Allow Information Disclosure (3080129)

Published: August 11, 2015

Version: 1.0

This security update resolves vulnerabilities in Microsoft Windows and Microsoft Office. The vulnerabilities could allow information disclosure by either exposing memory addresses if a user clicks a specially crafted link or by explicitly allowing the use of Secure Sockets Layer (SSL) 2.0. However, in all cases an attacker would have no way to force users to click a specially crafted link. An attacker would have to convince users to click the link, typically by way of an enticement in an email or Instant Messenger message.

This security update is rated Important for the following software:

  • Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0 on all supported releases of Microsoft Windows except Windows 10, which is not affected.
  • Microsoft XML Core Services 5.0 on Microsoft Office 2007 Service Pack 3
  • Microsoft XML Core Services 5.0 on Microsoft InfoPath 2007 Service Pack 3

For more information, see the Affected Software section.

The security update addresses the vulnerabilities by modifying how Microsoft XML Core Services returns data requested by the API, and by configuring MSXML to use more secure network protocols by default. For more information about the vulnerabilities, see the Vulnerability Information section.

For more information about this update, see Microsoft Knowledge Base Article 3080129.

The following software versions or editions are affected. Versions or editions that are not listed are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, see Microsoft Support Lifecycle.

Microsoft Windows

Operating System

Component

Maximum Security Impact

Aggregate Severity Rating

Updates Replaced*

Windows Vista

Windows Vista Service Pack 2
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows Vista x64 Edition Service Pack 2
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows Server 2008

Windows Server 2008 for 32-bit Systems Service Pack 2
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows Server 2008 for x64-based Systems Service Pack 2
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows Server 2008 for Itanium-based Systems Service Pack 2
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows 7

Windows 7 for 32-bit Systems Service Pack 1
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows 7 for x64-based Systems Service Pack 1
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows Server 2008 R2

Windows Server 2008 R2 for x64-based Systems Service Pack 1
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows 8 and Windows 8.1

Windows 8 for 32-bit Systems
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

2939576 in MS14-033

Windows 8 for x64-based Systems
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

2939576 in MS14-033

Windows 8.1 for 32-bit Systems
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

2939576 in MS14-033

Windows 8.1 for x64-based Systems
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

2939576 in MS14-033

Windows Server 2012 and Windows Server 2012 R2

Windows Server 2012
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

2939576 in MS14-033

Windows Server 2012 R2
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

2939576 in MS14-033

Windows RT and Windows RT 8.1

Windows RT[1]
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

2939576 in MS14-033

Windows RT 8.1[1]
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

2939576 in MS14-033

Server Core installation option

Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

3046482 in MS15-039
2939576 in MS14-033

Windows Server 2012 (Server Core installation)
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

2939576 in MS14-033

Windows Server 2012 R2 (Server Core installation)
(3076895)

Microsoft XML Core Services 3.0 and Microsoft XML Core Services 6.0

Information Disclosure

Important

2939576 in MS14-033

[1]This update is available via Windows Update only.

*The Updates Replaced column shows only the latest update in a chain of superseded updates. For a comprehensive list of updates replaced, go to the Microsoft Update Catalog, search for the update KB number, and then view update details (updates replaced information is on the Package Details tab).

Note Windows Server Technical Preview 2 is affected. Customers running this operating system are encouraged to apply the update, which is available via Windows Update.

Microsoft Office

Office Software

Component

Maximum Security Impact

Aggregate Severity Rating

Updates Replaced*

Microsoft Office Suites and Components

Microsoft Office 2007 Service Pack 3
(2825645)

Microsoft XML Core Services 5.0

Information Disclosure

Important

2687499 in MS13-002

Other Microsoft Office Software

Microsoft InfoPath 2007 Service Pack 3
(2825645)

Microsoft XML Core Services 5.0

Information Disclosure

Important

2687499 in MS13-002

*The Updates Replaced column shows only the latest update in a chain of superseded updates. For a comprehensive list of updates replaced, go to the Microsoft Update Catalog, search for the update KB number, and then view update details (updates replaced information is on the Package Details tab).

The following severity ratings assume the potential maximum impact of the vulnerability. For information regarding the likelihood, within 30 days of this security bulletin's release, of the exploitability of the vulnerability in relation to its severity rating and security impact, please see the Exploitability Index in the August bulletin summary.

Vulnerability Severity Rating and Maximum Security Impact by Affected Software

Affected Software

MSXML Information Disclosure Vulnerability - CVE-2015-2434

MSXML Information Disclosure Vulnerability - CVE-2015-2440

MSXML Information Disclosure Vulnerability - CVE-2015-2471

Aggregate Severity Rating

Windows Vista

Microsoft XML Core Services 3.0 on Windows Vista Service Pack 2
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 3.0 on Windows Vista x64 Edition Service Pack 2
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Vista x64 Edition Service Pack 2
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Windows Server 2008

Microsoft XML Core Services 3.0 on Windows Server 2008 for 32-bit Systems Service Pack 2
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2008 for 32-bit Systems Service Pack 2
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows Server 2008 for x64-based Systems Service Pack 2
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2008 for x64-based Systems Service Pack 2
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows Server 2008 for Itanium-based Systems Service Pack 2
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2008 for Itanium-based Systems Service Pack 2
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Windows 7

Microsoft XML Core Services 3.0 on Windows 7 for 32-bit Systems Service Pack 1
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows 7 for 32-bit Systems Service Pack 1
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows 7 for x64-based Systems Service Pack 1
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows 7 for x64-based Systems Service Pack 1
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Windows Server 2008 R2

Microsoft XML Core Services 3.0 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Windows 8 and Windows 8.1

Microsoft XML Core Services 3.0 on Windows 8 for 32-bit Systems
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows 8 for 32-bit Systems
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows 8 for x64-based Systems
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows 8 for x64-based Systems
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows 8.1 for 32-bit Systems
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows 8.1 for 32-bit Systems
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows 8.1 for x64-based Systems
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows 8.1 for x64-based Systems
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Windows Server 2012 and Windows Server 2012 R2

Microsoft XML Core Services 3.0 on Windows Server 2012
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2012
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows Server 2012 R2
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2012 R2
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Windows RT and Windows RT 8.1

Microsoft XML Core Services 3.0 on Windows RT
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows RT
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows RT 8.1
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows RT 8.1
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Server Core installation option

Microsoft XML Core Services 3.0 on Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows Server 2012 (Server Core installation)
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2012 (Server Core installation)
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft XML Core Services 3.0 on Windows Server 2012 R2 (Server Core installation)
(3076895)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 6.0 on Windows Server 2012 R2 (Server Core installation)
(3076895)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft Office 2007

Microsoft XML Core Services 5.0 on Microsoft Office 2007 Service Pack 2
(2825645)

Important 
Information Disclosure

Important 
Information Disclosure

Important 
Information Disclosure

Important

Microsoft XML Core Services 5.0 on Microsoft Office 2007 Service Pack 3
(2825645)

Not applicable

Important 
Information Disclosure

Not applicable

Important

Microsoft InfoPath 2007

Microsoft XML Core Services 5.0 on Windows Server 2008 for 32-bit Systems Service Pack 2
(2825645)

Not applicable

Important 
Information Disclosure

Not applicable

Important

What version of Microsoft XML Core Services is installed on my system?

Some versions of Microsoft XML Core Services are included with Microsoft Windows; others are installed with non-operating system software from Microsoft or third-party providers. Some are also available as separate downloads. The following table shows which versions of Microsoft XML Core Services are included with Microsoft Windows and which are installed with the installation of additional Microsoft or third-party software.

Operating System

MSXML 3.0 and MSXML 6.0

MSXML 5.0

Windows Vista

Shipped with operating system

Installed with additional software

Windows Server 2008

Shipped with operating system

Installed with additional software

Windows 7

Shipped with operating system

Installed with additional software

Windows Server 2008 R2

Shipped with operating system

Installed with additional software

Windows 8 and Windows 8.1

Shipped with operating system

Installed with additional software

Windows Server 2012 and Windows Server 2012 R2

Shipped with operating system

Installed with additional software

Multiple MSXML Information Disclosure Vulnerabilities

Information disclosure vulnerabilities exist when Microsoft XML Core Services (MSXML) explicitly allows the use of Secure Sockets Layer (SSL) 2.0. An attacker who successfully exploited these vulnerabilities could decrypt portions of encrypted network information traffic.

In a man-in-the-middle (MiTM) attack scenario, an attacker could force an encrypted SSL 2.0 session and then decrypt portions of encrypted network information traffic. This update resolves the issue by configuring MSXML to use more secure network protocols by default instead of SSL 2.0.

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

MSXML Information Disclosure Vulnerability

CVE-2015-2434

No

No

MSXML Information Disclosure Vulnerability

CVE-2015-2471

No

No

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

MSXML Information Disclosure Vulnerability - CVE-2015-2440

An information disclosure vulnerability exists when Microsoft XML Core Services (MSXML) exposes memory addresses not intended for public disclosure. An attacker could combine this information disclosure vulnerability to bypass Address Space Layout Randomization (ASLR). An attacker who successfully exploited this vulnerability could potentially read private data. The vulnerability would not allow an attacker to execute code or to elevate user rights directly, but the attacker could use it to obtain information in an attempt to further compromise the affected system.

To exploit the vulnerability, an attacker could host a specially-crafted website that is designed to invoke MSXML through Internet Explorer. However, an attacker would have no way to force a user to visit such a website. Instead, an attacker would typically have to convince a user to either click a link in an email message or a link in an Instant Messenger request that would then take the user to the website. The update addresses the vulnerability by modifying how Microsoft XML Core Services returns data requests.

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.

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

For Security Update Deployment information, see the Microsoft Knowledge Base article referenced here in the Executive Summary.

Microsoft recognizes the efforts of those in the security community who help us protect customers through coordinated vulnerability disclosure. See Acknowledgments for more information.

The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

  • V1.0 (08 11, 2015): Bulletin published.

Page generated 2015-08-10 11:15Z-07:00.
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