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             AUSCERT External Security Bulletin Redistribution

    Microsoft Security Bulletin MS15-130: Security Update for Microsoft
           Uniscribe to Address Remote Code Execution (3108670)
                              9 December 2015


        AusCERT Security Bulletin Summary

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-6130  

Original Bulletin: 

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Microsoft Security Bulletin MS15-130: Security Update for Microsoft Uniscribe
to Address Remote Code Execution (3108670)

Document Metadata

Bulletin Number: MS15-130

Bulletin Title: Security Update for Microsoft Uniscribe to Address Remote Code

Severity: Critical

KB Article: 3108670

Version: 1.0

Published Date: December 8, 2015

Executive Summary

This security update resolves a vulnerability in Microsoft Windows. The 
vulnerability could allow remote code execution if a user opens a specially 
crafted document or visits an untrusted webpage that contains specially 
crafted fonts.

This security update is rated Critical for all supported editions of Windows 7
and Windows Server 2008 R2. For more information, see the Affected Software 

Affected Software

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 R2 for x64-based Systems Service Pack 1 (Server Core 

Vulnerability Information

Windows Integer Underflow Vulnerability CVE-2015-6130

A remote code execution vulnerability exists when Windows Uniscribe improperly
parses specially crafted fonts. An attacker who successfully exploited the 
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 by convincing a
user to visit an untrusted webpage that contains embedded fonts. The security
update addresses the vulnerability by correcting how Windows parses fonts.

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 the 

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