Microsoft Windows with Hyper-V: Multiple vulnerabilities

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2013.1610
   Vulnerability in Hyper-V Could Allow Elevation of Privilege (2893986)
                             13 November 2013

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        AusCERT Security Bulletin Summary
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Product:           Microsoft Windows with Hyper-V
Publisher:         Microsoft
Operating System:  Windows 8
                   Windows Server 2012
Impact/Access:     Increased Privileges            -- Existing Account
                   Denial of Service               -- Existing Account
                   Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2013-3898  

Original Bulletin: 
   https://technet.microsoft.com/en-us/security/bulletin/ms13-092

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Microsoft Security Bulletin MS13-092 - Important Vulnerability in Hyper-V 
Could Allow Elevation of Privilege (2893986)

Published: Tuesday, November 12, 2013

Version: 1.0

General Information

Executive Summary

This security update resolves a privately reported vulnerability in Microsoft
Windows. The vulnerability could allow elevation of privilege if an attacker 
passes a specially crafted function parameter in a hypercall from an existing
running virtual machine to the hypervisor. The vulnerability could also allow
denial of service for the Hyper-V host if the attacker passes a specially 
crafted function parameter in a hypercall from an existing running virtual 
machine to the hypervisor.

This security update is rated Important for Windows 8 for x64-based Systems 
and Windows Server 2012.

Affected Software

Windows 8 for x64-based Systems (Pro and Enterprise editions only)
Windows Server 2012 (Standard and Datacenter editions, and Hyper-V Server 
  2012 only)
Windows Server 2012 (Server Core installation)

Vulnerability Information

Address Corruption Vulnerability - CVE-2013-3898

An elevation of privilege vulnerability exists in Hyper-V on Windows 8 and 
Windows Server 2012. An attacker who successfully exploited this vulnerability
could execute arbitrary code as System in another virtual machine (VM) on the
shared Hyper-V host. An attacker would not be able to execute code on the 
Hyper-V host, only on guest VMs on the same host. The vulnerability could also
allow denial of service in Hyper-V on the same platforms, allowing an attacker
to cause the Hyper-V host to stop responding or restart.

To view this vulnerability as a standard entry in the Common Vulnerabilities 
and Exposures list, see CVE-2013-3898.

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