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Category:   OS (Microsoft)  >   Windows Kernel Vendors:   Microsoft
(Vendor Issues Fix) Microsoft Windows ANI File Parsing Errors Let Remote Users Deny Service
SecurityTracker Alert ID:  1012834
SecurityTracker URL:  http://securitytracker.com/id/1012834
CVE Reference:   CAN-2004-1305   (Links to External Site)
Updated:  Mar 7 2005
Original Entry Date:  Jan 11 2005
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): XP SP2 is not affected
Description:   A denial of service vulnerability was reported in the Microsoft Windows kernel in the parsing of ANI files. A remote user can cause the target user's system to hang or crash.

A remote user can create a specially crafted Windows animated cursor file (ANI file) that, when loaded by the target user, will cause the target system to crash. The malicious file can be loaded via HTML, for example.

The software does not properly validate user-supplied frame numbers and rate numbers in the ANI file header.

A demonstration exploit is available at:

http://www.xfocus.net/flashsky/icoExp/index.html

Sylvain Bruyere and Flashsky (fangxing at venustech.com.cn) separately and independently discovered this vulnerability.

Impact:   A remote user can cause the target user's system to crash.
Solution:   Microsoft has issued the following fixes.

Microsoft Windows NT Server 4.0 Service Pack 6a:

http://www.microsoft.com/downloads/details.aspx?FamilyId=4604400A-287E-48CC-91B1-BEE44EEA588C

Microsoft Windows NT Server 4.0 Terminal Server Edition Service Pack 6:

http://www.microsoft.com/downloads/details.aspx?FamilyId=94A0B521-4C39-4D15-AA80-068C30476E6F

Microsoft Windows 2000 Service Pack 3 and Microsoft Windows 2000 Service Pack 4:

http://www.microsoft.com/downloads/details.aspx?FamilyId=722C6C65-3F6C-4029-8EB7-D4612A785E78

Microsoft Windows XP Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?FamilyId=8850954D-57D9-4D23-9AA1-1CCF6085A057

Microsoft Windows XP 64-Bit Edition Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?FamilyId=2325700F-7931-4B0C-A978-BCFF469B8061

Microsoft Windows XP 64-Bit Edition Version 2003:

http://www.microsoft.com/downloads/details.aspx?FamilyId=16A52196-0BD0-4355-9F29-2B26CB0961AF

Microsoft Windows Server 2003:

http://www.microsoft.com/downloads/details.aspx?FamilyId=CBCCADF6-449A-4D74-937D-4087A6E6C1C2

Microsoft Windows Server 2003 64-Bit Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=16A52196-0BD0-4355-9F29-2B26CB0961AF

A restart is required.

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms05-002.mspx (Links to External Site)
Cause:   Input validation error
Underlying OS:  

Message History:   This archive entry is a follow-up to the message listed below.
Dec 24 2004 Microsoft Windows ANI File Parsing Errors Let Remote Users Deny Service



 Source Message Contents

Date:  Tue, 11 Jan 2005 13:28:30 -0500
Subject:  http://www.microsoft.com/technet/security/bulletin/ms05-002.mspx



http://www.microsoft.com/technet/security/bulletin/ms05-002.mspx

CVE: CAN-2004-1049

CVE: CAN-2004-1305


Microsoft Windows NT Server 4.0 Service Pack 6a:

http://www.microsoft.com/downloads/details.aspx?FamilyId=4604400A-287E-48CC-91B1-BEE44EEA588C

Microsoft Windows NT Server 4.0 Terminal Server Edition Service Pack 6:

http://www.microsoft.com/downloads/details.aspx?FamilyId=94A0B521-4C39-4D15-AA80-068C30476E6F

Microsoft Windows 2000 Service Pack 3 and Microsoft Windows 2000 Service Pack 4:

http://www.microsoft.com/downloads/details.aspx?FamilyId=722C6C65-3F6C-4029-8EB7-D4612A785E78

Microsoft Windows XP Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?FamilyId=8850954D-57D9-4D23-9AA1-1CCF6085A057

Microsoft Windows XP 64-Bit Edition Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?FamilyId=2325700F-7931-4B0C-A978-BCFF469B8061

Microsoft Windows XP 64-Bit Edition Version 2003:

http://www.microsoft.com/downloads/details.aspx?FamilyId=16A52196-0BD0-4355-9F29-2B26CB0961AF

Microsoft Windows Server 2003:

http://www.microsoft.com/downloads/details.aspx?FamilyId=CBCCADF6-449A-4D74-937D-4087A6E6C1C2

Microsoft Windows Server 2003 64-Bit Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=16A52196-0BD0-4355-9F29-2B26CB0961AF
 
 


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