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Category:   OS (Microsoft)  >   TCP/IP Stack Implementation Vendors:   Microsoft
Microsoft Windows IGMP Processing Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1015629
SecurityTracker URL:  http://securitytracker.com/id/1015629
CVE Reference:   CVE-2006-0021   (Links to External Site)
Date:  Feb 14 2006
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2003 SP1, XP SP2; and prior service packs
Description:   A vulnerability was reported in Microsoft Windows in the TCP/IP stack. A remote user can cause denial of service conditions.

The system does not properly validate certain IGMP v3 requests. A remote user can send a specially crafted IGMP packet to the target system to cause the system to stop responding.

The vendor credits Douglas Nascimento of Datacom with reporting this vulnerability.

Impact:   A remote user can cause the target system to stop responding.
Solution:   The vendor has issued the following fixes:

Microsoft Windows XP Service Pack 1 and Microsoft Windows XP Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?FamilyId=7BB21D74-C37B-472B-BB10-71D4680680A7

Microsoft Windows XP Professional x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=8E2538CC-CC90-4DB7-8D0B-0B8BA4234E67

Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?FamilyId=78D7DF14-6049-4318-89CA-9C8681CED8AB

Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows Server 2003 with SP1 for Itanium-based Systems:

http://www.microsoft.com/downloads/details.aspx?FamilyId=9AE276CF-AB46-4198-BCB3-3EFFDF15550E

Microsoft Windows Server 2003 x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=12AAE69E-C5C3-4E4A-9970-F5DB84DD9744

A restart is required.

The vendor's advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms06-007.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms06-007.mspx (Links to External Site)
Cause:   Exception handling error

Message History:   None.


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