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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2010-0169
Microsoft Windows Shell shortcut handling remote code execution vulnerability

Original Issue Date:July 19, 2010
Updated: August 09, 2010

Severity Rating: HIGH

Systems Affected

  • Windows XP Service Pack 3
  • Windows XP Professional x64 Edition SP 2
  • Windows Server 2003 SP 2
  • Windows Server 2003 x64 Edition SP 2
  • Windows Server 2003 with SP2 for Itanium-based Systems
  • Windows Vista SP 1 and SP 2
  • Windows Vista x64 Edition SP 1 and SP 2
  • Windows Server 2008 for 32-bit Systems and SP 2
  • Windows Server 2008 for x64-based Systems and SP 2
  • Windows Server 2008 for Itanium-based Systems and SP 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

Overview

A remote code execution vulnerability has been reported in Windows Shell , that does not correctly validate specific parameters of the shortcut when attempting to load the icon of a shortcut.

Description

This issue is due to an error in the Windows Shell component when parsing shortcuts (.LNK, .PIF files), which could allow attackers to automatically execute a malicious binary by tricking a user into opening in Windows Explorer a removable drive (e.g. USB) or browsing a remote network or WebDAV share containing a specially crafted shortcut file.

Successful exploits allows the remote attacker to execute arbitrary code in the context of the logged-in user.

Note: The vulnerability has been actively exploited in targeted attacks.



Workaround

  • Disable the displaying of icons for shortcuts
  • Disable the WebClient service
  • Disable AutoRun
  • Block outgoing SMB traffic
  • Block the download of LNK and PIF files from the Internet

Note : A new Fix It tool which allows administrators and users to more easily deploy the workaround.

Note : For detailed steps and impact of applying these workarounds refer to Microsoft Security Advisory 2286198 .

Solution

Apply appropriate patches as mentioned in Microsoft security Bulletin MS10-046

Vendor Information

Microsoft
http://www.microsoft.com/technet/security/Bulletin/MS10-046.mspx
http://www.microsoft.com/technet/security/advisory/2286198.mspx

References

Microsoft
http://support.microsoft.com/kb/2286198
http://www.microsoft.com/technet/security/advisory/2286198.mspx
http://blogs.technet.com/b/msrc/archive/2010/07/16/security-advisory-2286198-released.aspx
http://support.microsoft.com/kb/967715

VUPEN
http://www.vupen.com/english/advisories/2010/1836

US-CERT
http://www.kb.cert.org/vuls/id/940193

Securityfocus
http://www.securityfocus.com/bid/41732

VIrusBlokADa
http://www.anti-virus.by/en/tempo.shtml

CVE Name
CVE-2010-2568

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-24368572

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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