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                           CERT-Renater

               Note d'Information No. 2015/VULN080
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DATE                : 13/05/2015

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Windows version Vista, Server 2008, 7, 8, 8.1, RT,
                      RT 8.1, Server 2012
                     running Microsoft Management Console.

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KB3051768
https://technet.microsoft.com/en-us/library/security/MS15-054
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MS15-054: Vulnerability in Microsoft Management Console File Format
Could Allow Denial of Service (3051768)

Bulletin Number: MS15-054

Bulletin Title: Vulnerability in Microsoft Management Console File
Format Could Allow Denial of Service

Severity: Important

KB Article: 3051768

Version: 1.0

Published Date: May 12, 2015


Executive Summary

This security update resolves a vulnerability in Microsoft Windows. The
vulnerability could allow denial of service if a remote,
unauthenticated attacker can convince a user to open a share containing
a specially crafted .msc file. However, the attacker has no means to
force a user to visit the share or view the file.

This security update is rated Important for all supported editions of
Microsoft Windows Vista, Windows Server 2008, Windows 7, Windows Server
2008 R2, Windows 8, Windows 8.1, Windows Server 2012, and Windows
Server 2012 R2.

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

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

Windows RT 8.1

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.


Vulnerability Information

Microsoft Management Console File Format Denial of Service
Vulnerability - CVE-2015-1681

This vulnerability allows an unauthenticated attacker to create a
denial of service condition if the attacker can convince a user to open
a share containing a specially crafted .msc file. However, the attacker
has no means to force a user to visit the share or view the file.

The vulnerability exists when Windows attempts to access a specially
crafted .msc file to retrieve the icon information, and then fails to
properly validate a destination buffer resulting in a denial of
service. Servers and workstations are most at risk from this
vulnerability. The update addresses the vulnerability by correcting how
Windows validates the destination buffers in certain scenarios.

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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