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Microsoft Windows Media Services NSIISlog.DLL Remote Buffer Overflow Vulnerability

Risk
High

Date Discovered
06-25-2003

Description
Microsoft has reported a buffer overflow vulnerability in Windows Media Services. This is due to a problem with how the logging ISAPI extension handles incoming client requests. This could cause arbitrary code execution in IIS, which is exploitable through Media Services.

Components Affected
Microsoft Windows 2000 Advanced Server SP4
Microsoft Windows 2000 Advanced Server SP3
Microsoft Windows 2000 Advanced Server SP2
Microsoft Windows 2000 Advanced Server SP1
Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server SP4
Microsoft Windows 2000 Datacenter Server SP3
Microsoft Windows 2000 Datacenter Server SP2
Microsoft Windows 2000 Datacenter Server SP1
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Server SP4
Microsoft Windows 2000 Server SP3
Microsoft Windows 2000 Server SP2
Microsoft Windows 2000 Server SP1
Microsoft Windows 2000 Server

Recommendations
Block external access at the network boundary, unless service is required by external parties.
Filter client requests to streaming media servers by external or untrusted hosts and networks at the network perimeter. Traffic to the logging server should be also be blocked at network firewalls and routers.

Disable any unneccessary default services.
Do not install Media Services or any other components that are not explicitly required.

A patch has been made available for Windows 2000 and Windows 2000 Service Pack 3:




Microsoft Windows 2000 Advanced Server SP4:

Microsoft Patch Q822343
http://microsoft.com/downloads/details.aspx?FamilyId=F772E131-BBC9-4B34-9E78-F71D9742FED8&displaylang=en

Microsoft Windows 2000 Advanced Server SP3:
Microsoft Patch Q822343
http://microsoft.com/downloads/details.aspx?FamilyId=F772E131-BBC9-4B34-9E78-F71D9742FED8&displaylang=en

Microsoft Windows 2000 Advanced Server SP2:
Microsoft Patch Q822343
http://microsoft.com/downloads/details.aspx?FamilyId=F772E131-BBC9-4B34-9E78-F71D9742FED8&displaylang=en

Microsoft Windows 2000 Advanced Server SP1:
Microsoft Windows 2000 Advanced Server :
Microsoft Windows 2000 Datacenter Server SP4:
Microsoft Patch Q822343
http://microsoft.com/downloads/details.aspx?FamilyId=F772E131-BBC9-4B34-9E78-F71D9742FED8&displaylang=en

Microsoft Windows 2000 Datacenter Server SP3:
Microsoft Patch Q822343
http://microsoft.com/downloads/details.aspx?FamilyId=F772E131-BBC9-4B34-9E78-F71D9742FED8&displaylang=en

Microsoft Windows 2000 Datacenter Server SP2:
Microsoft Patch Q822343
http://microsoft.com/downloads/details.aspx?FamilyId=F772E131-BBC9-4B34-9E78-F71D9742FED8&displaylang=en

Microsoft Windows 2000 Datacenter Server SP1:
Microsoft Windows 2000 Datacenter Server :
Microsoft Windows 2000 Server SP4:
Microsoft Patch Q822343
http://microsoft.com/downloads/details.aspx?FamilyId=F772E131-BBC9-4B34-9E78-F71D9742FED8&displaylang=en

Microsoft Windows 2000 Server SP3:
Microsoft Patch Q822343
http://microsoft.com/downloads/details.aspx?FamilyId=F772E131-BBC9-4B34-9E78-F71D9742FED8&displaylang=en

Microsoft Windows 2000 Server SP2:
Microsoft Patch Q822343
http://microsoft.com/downloads/details.aspx?FamilyId=F772E131-BBC9-4B34-9E78-F71D9742FED8&displaylang=en

Microsoft Windows 2000 Server SP1:
Microsoft Windows 2000 Server :

References
Source: Microsoft Security Bulletin MS03-022
URL: http://www.microsoft.com/technet/treeview/default.asp?url=/technet/security/bulletin/MS03-022.asp

Credits
Discovery of this vulnerability has been credited to Brett Moore.


Copyright (c) 2003 by Symantec Corp.
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