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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:
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:

Microsoft Windows XP Professional x64 Edition:

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

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

Microsoft Windows Server 2003 x64 Edition:

A restart is required.

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Exception handling error

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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