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             AUSCERT External Security Bulletin Redistribution

                               ESB-2013.0505
         Vulnerability in Microsoft Antimalware Client Could Allow
                     Elevation of Privilege (2823482)
                               9 April 2013

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

Product:           Microsoft Anitmalware Client
Publisher:         Microsoft
Operating System:  Windows 8
                   Windows RT
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2013-0078  

Original Bulletin: 
   https://technet.microsoft.com/en-us/security/bulletin/ms13-034

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Microsoft Security Bulletin MS13-034 - Important

Vulnerability in Microsoft Antimalware Client Could Allow Elevation of 
Privilege (2823482)

Published Date: April 9, 2013

Version: 1.0

General Information

Executive Summary

This security update resolves a privately reported vulnerability in the 
Microsoft Antimalware Client. The vulnerability could allow elevation of 
privilege due to the pathnames used by the Microsoft Antimalware Client. An 
attacker who successfully exploited this vulnerability could execute arbitrary 
code and take complete control of an affected system. The attacker could then 
install programs; view, change, or delete data; or create new accounts with 
full user rights. An attacker must have valid logon credentials to exploit this
vulnerability. The vulnerability could not be exploited by anonymous users.

This security update is rated Important for the Microsoft Antimalware Client in
supported versions of Windows Defender for Windows 8 and Windows RT. This 
security update has no severity rating for the Microsoft Antimalware Client 
in other Microsoft antimalware programs. 

Affected Software

Windows Defender for Windows 8 and Windows RT(2781197)

Vulnerability Information

Microsoft Antimalware Improper Pathname Vulnerability - CVE-2013-0078

This is an elevation of privilege vulnerability. An attacker who successfully 
exploited this vulnerability could execute arbitrary code in the security 
context of the LocalSystem account and take complete control of the system. 
An attacker could then install programs; view, change, or delete data; or 
create new accounts with full user rights. An attacker must have valid logon 
credentials to exploit this vulnerability. The vulnerability could not be 
exploited by anonymous users.

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===========================================================================
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The University of Queensland
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