Bad Network Packet May Cause Access Violation (AV) on DNS Server

ID: Q142047

The information in this article applies to:

Microsoft Windows NT Server version 4.0
Microsoft Windows NT Server version 4.0, Terminal Server Edition

SYMPTOMS

The Domain Name System (DNS) fails with an access violation and ceases to resolve names.

CAUSE

If a DNS query is modified so that the original query's AnswerCount field is greater than 0, the DNS server may cause an access violation (AV).

If the AnswerCount is greater than 0, we expect to already have data from the original query, but in this case, the data is not present.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows NT To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, please see the following article in the Microsoft Knowledge Base:

Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

For your convenience, the English version of this post-SP3 hotfix has been posted to the following Internet location. However, Microsoft recommends that you install Windows NT 4.0 Service Pack 4 to correct this problem.

ftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/usa/NT40/
hotfixes-postSP3/dns-fix

STATUS

Microsoft has confirmed this to be a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

Additional query words: 4.00 prodnt

Keywords : kbnetwork NT4SP4Fix kbbug4.00 nttcp kbfix4.00.sp4
Version : WinNT:4.0
Platform : winnt
Issue type : kbbug