[22249] in bugtraq
Microsoft Security Bulletin MS01-043
daemon@ATHENA.MIT.EDU (Microsoft Product Security)
Wed Aug 15 11:31:04 2001
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Date: Tue, 14 Aug 2001 17:25:08 -0700
From: Microsoft Product Security <secnotif@MICROSOFT.COM>
To: MICROSOFT_SECURITY@ANNOUNCE.MICROSOFT.COM
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The following is a Security Bulletin from the Microsoft Product Security
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Title: NNTP Service in Windows NT 4.0 and Windows 2000
Contains Memory Leak
Date: 14 August 2001
Software: Windows NT 4.0, Windows 2000
Impact: Denial of service
Bulletin: MS01-043
Microsoft encourages customers to review the Security Bulletin at:
http://www.microsoft.com/technet/security/bulletin/MS01-043.asp.
- ----------------------------------------------------------------------
Issue:
======
The NNTP (Network News Transport Protocol) service in Windows NT 4.0
and Windows 2000 contains a memory leak in a routine that processes
news postings. Each time such a posting is processed that contains a
particular construction, the memory leak causes a small amount of
memory to no longer be available for use. If an attacker sent a large
number of posts, the server memory could be depleted to the point at
which normal service would be disrupted. An affected server could be
restored to normal service by rebooting.
Mitigating Factors:
====================
- Windows NT 4.0 does not contain a native NNTP service. NNTP
is only available on the system if the Windows NT 4.0 Option
Pack has been installed.
- The default configuration of NNTP is not affected by the
vulnerability, as no newsgroups are configured by default.
- The vulnerability would not enable an attacker to usurp any
administrative control or compromise data on the machine.
Patch Availability:
===================
- A patch is available to fix this vulnerability. Please read the
Security Bulletin
http://www.microsoft.com/technet/security/bulletin/ms01-043.asp
for information on obtaining this patch.
Acknowledgment:
===============
- Aiden ORawe
- ---------------------------------------------------------------------
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