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             AUSCERT External Security Bulletin Redistribution

                               ESB-2015.2798
         Microsoft Security Bulletin MS15-117: Security Update for
             NDIS to Address Elevation of Privilege (3101722)
                             11 November 2015

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-6098  

Original Bulletin: 
   https://technet.microsoft.com/en-us/library/security/MS15-117

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Microsoft Security Bulletin MS15-117: Security Update for NDIS to Address 
Elevation of Privilege (3101722)

Document Metadata

Bulletin Number: MS15-117

Bulletin Title: Security Update for NDIS to Address Elevation of Privilege

Severity: Important

KB Article: 3101722

Version: 1.0

Published Date: November 10, 2015

Executive Summary

This security update resolves a vulnerability in Microsoft Windows NDIS. The 
vulnerability could allow elevation of privilege if an attacker logs on to a 
system and runs a specially crafted application.

This security update is rated Important for all supported editions of Windows
Vista, Windows Server 2008, Windows 7, and Windows Server 2008 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 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)

Vulnerability Information

Windows NDIS Elevation of Privilege Vulnerability CVE-2015-6098

An elevation of privilege vulnerability exists when NDIS fails to check the 
length of a buffer prior to copying memory into it. An attacker who 
successfully exploited this vulnerability could gain elevated privileges on a
targeted system.

To exploit the vulnerability, an attacker would first have to log on to the 
system. The attacker could then run a specially crafted application designed 
to elevate privileges. The security update corrects how NDIS validates buffer
length.

Microsoft received information about this vulnerability through coordinated 
vulnerability disclosure. At the time this security bulletin was originally 
issued, Microsoft was unaware of any attack attempting to exploit this 
vulnerability.

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