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Category:   OS (Microsoft)  >   Windows DLL (Any) Vendors:   Microsoft
Windows Server Service Buffer Overflow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1016667
SecurityTracker URL:  http://securitytracker.com/id/1016667
CVE Reference:   CVE-2006-3439   (Links to External Site)
Updated:  Aug 15 2006
Original Entry Date:  Aug 9 2006
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 2000 SP4, XP SP2, 2003 SP1; and prior service packs
Description:   A vulnerability was reported in the Windows Server Service. A remote user can execute arbitrary code on the target system.

A remote user can send specially crafted RPC data to trigger a buffer overflow and execute arbitrary code on the target system. The code will run with System level privileges.

Microsoft credits US-CERT and SANS with assistance regarding this vulnerability.

On August 11, 2006, Microsoft issued an advisory indicating that exploit code is publicly available. The exploit code affects Windows 2000 and Windows XP SP1. The Microsoft advisory is available at:

http://www.microsoft.com/technet/security/advisory/922437.mspx

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued the following fixes:

Microsoft Windows 2000 Service Pack 4:

http://www.microsoft.com/downloads/details.aspx?FamilyId=3b61153d-359f-4441-a448-24062cb2387c"

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

http://www.microsoft.com/downloads/details.aspx?FamilyId=2996b9b6-03ff-4636-861a-46b3eac7a305"

Microsoft Windows XP Professional x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=314c7c2c-9a02-4e56-98cf-97703fecf0be"

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

http://www.microsoft.com/downloads/details.aspx?FamilyId=a0058f39-6dea-4dfc-9dd6-4cb45b305dec"

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=af970833-2044-4284-937d-3beb2e2f286d"

Microsoft Windows Server 2003 x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=3b0c1954-fca5-4e95-abb2-6066a9d6bc76"

A restart is required.

The Microsoft advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms06-040.mspx

On August 14, 2006, Cisco provided guidance on how Cisco customers can mitigate exploit attempts:

http://www.cisco.com/warp/public/707/cisco-sr-20060814-ms06-040-vulnerability.shtml

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms06-040.mspx (Links to External Site)
Cause:   Boundary error

Message History:   None.


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