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Microsoft Windows Buffer Overflow in ListBox and ComboBox Control
Secunia Advisory: SA10014
Release Date: 2003-10-15
Last Update: 2003-11-06
Popularity: 13,649 views

Critical:
Less critical
Impact: Privilege escalation
Where: Local system
Solution Status: Vendor Patch

OS:Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows NT 4.0 Server
Microsoft Windows NT 4.0 Server, Terminal Server Edition
Microsoft Windows NT 4.0 Workstation
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional

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CVE reference:CVE-2003-0659


Description:
Microsoft has issued patches to fix a vulnerability in Microsoft Windows allowing malicious users to escalate their privileges.

The vulnerability is caused due to a boundary error in a function in "User32.dll" when handling certain parameters passed by "LB_DIR" and "CB_DIR" windows messages. Both the ListBox and the ComboBox Control call this function.

It is therefore possible to exploit the vulnerability by sending either a "LB_DIR" or "CB_DIR" message supplying an overly long, specially crafted pathname to a privileged process, which uses the ListBox or ComboBox Control.

Successful exploitation allows exection of arbitrary code with the same privileges as the process.

The vulnerability can be exploited via Utility Manager in Windows 2000. However, it can also be exploited via third party applications.

Solution:
NOTE: It has been reported that the patch may cause Sophos Anti-virus and FirstClass Client to become inoperable on certain European version of Windows 2000. Other software may also be affected.

Microsoft has re-released patches for the following language versions which should fix the problem with certain software:
Brazilian
Czech
Danish
Finnish
Hungarian
Italian
Norwegian
Polish
Portuguese
Russian
Spanish
Swedish
Turkish

Microsoft has issued patches:

The patches are available from WindowsUpdate or from:

Microsoft Windows NT Workstation 4.0, Service Pack 6a
http://www.microsoft.com/downloads/de...-959C-E80EB5FD7A91&displaylang=en

Microsoft Windows NT Server 4.0, Service Pack 6a
http://www.microsoft.com/downloads/de...-9D37-24A116296188&displaylang=en

Microsoft Windows NT Server 4.0, Terminal Server Edition, Service Pack 6
http://www.microsoft.com/downloads/de...-976B-57281B4521C1&displaylang=en

Microsoft Windows 2000, Service Pack 2
http://www.microsoft.com/downloads/de...-BE3D-64459F4AD3FD&displaylang=en

Microsoft Windows 2000 Service Pack 3, Service Pack 4
http://www.microsoft.com/downloads/de...-8D29-0764997F1E42&displaylang=en

Microsoft Windows XP Gold, Service Pack 1
http://www.microsoft.com/downloads/de...-BF3E-F57352E4C507&displaylang=en

Microsoft Windows XP 64 bit Edition
http://www.microsoft.com/downloads/de...-B76F-0BD69CF6E1D9&displaylang=en

Microsoft Windows XP 64 bit Edition Version 2003
http://www.microsoft.com/downloads/de...-9BDD-ABB496CA87CA&displaylang=en

Microsoft Windows Server 2003
http://www.microsoft.com/downloads/de...-A33B-E7630349E69E&displaylang=en

Microsoft Windows Server 2003 64 bit Edition
http://www.microsoft.com/downloads/de...-9BDD-ABB496CA87CA&displaylang=en

Provided and/or discovered by:
Brett Moore, Security-Assessment

Changelog:
2003-10-17: Added more details in "Description" section. Added information about software problems after installation of patch.
2003-10-22: Microsoft has re-released patches different language versions due to problems with the original patch.
2003-10-30: Microsoft has issued new patches for Windows XP due to problems with the original patch.
2003-11-06: Microsoft has issued a knowledge base article describing potential problems with the patch. See "Other References" section.

Original Advisory:
Buffer Overrun in the ListBox and in the ComboBox Control Could Allow Code Execution
http://www.microsoft.com/technet/security/bulletin/MS03-045.asp

Other References:
Reported system problems with Microsoft MS03-045 patches (Sophos):
http://www.sophos.com/support/news/#ms03-045

Microsoft Knowledge Base articles about problems with the patch:
http://support.microsoft.com/?kbid=831739
http://support.microsoft.com/?kbid=822428


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