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                                   CERT-Renater

                        Note d'Information No. 2010/VULN313
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DATE                      : 13/08/2010

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Windows Vista, Windows Server 2008, Windows 7.

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KB978886
http://www.microsoft.com/technet/security/Bulletin/MS10-058.mspx
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Microsoft Security Bulletin MS10-058 - Important
Vulnerabilities in TCP/IP Could Allow Elevation of Privilege (978886)

Published: August 10, 2010
Version: 1.0

General Information

Executive Summary

This security update resolves two privately reported vulnerabilities in
Microsoft Windows. The more severe of these vulnerabilities could allow
elevation of privilege due to an error in the processing of a specific input
buffer. An attacker who is able to log on to the target system could exploit
this vulnerability and run arbitrary code with system-level privileges. The
attacker could then install programs; view, change, or delete data; or create
new accounts with full user rights.

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 subsection, Affected and Non-Affected Software, in this
section.

The security update addresses the vulnerabilities by correcting the way in
which the TCP/IP stack handles malformed IPv6 packets and data copied from
user mode. For more information about the vulnerabilities, see the Frequently
Asked Questions (FAQ) subsection for the specific vulnerability entry under
the next section, Vulnerability Information.

Affected Software

  Windows Vista Service Pack 1 and Windows Vista Service Pack 2
  Windows Vista x64 Edition Service Pack 1
  Windows Vista x64 Edition Service Pack 2
  Windows Server 2008 for 32-bit Systems
  Windows Server 2008 for 32-bit Systems Service Pack 2
  Windows Server 2008 for x64-based Systems
  Windows Server 2008 for x64-based Systems Service Pack 2
  Windows Server 2008 for Itanium-based Systems
  Windows Server 2008 for Itanium-based Systems Service Pack 2
  Windows 7 for 32-bit Systems
  Windows 7 for x64-based Systems
  Windows Server 2008 R2 for x64-based Systems
  Windows Server 2008 R2 for Itanium-based Systems

Vulnerability Information

IPv6 Memory Corruption Vulnerability - CVE-2010-1892

  A denial of service vulnerability exists in TCP/IP processing in Microsoft
  Windows due to an error in the processing of specially crafted IPv6 packets
  with a malformed extension header. An attacker could exploit the
  vulnerability by sending the target system a small number of specially
  crafted packets, causing the affected system to stop responding.

Integer Overflow in Windows Networking Vulnerability  CVE-2010-1893

  An elevation of privilege vulnerability exists in TCP/IP processing in
  Microsoft Windows due to an error in the processing of a specific input
  buffer. An attacker who successfully exploited this vulnerability could run
  arbitrary code with system-level privileges. An attacker could then install
  programs; view, change, or delete data; or create new accounts with full
  user rights.

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