Memory Leak in Telnet Server (301514)



The information in this article applies to:

  • Microsoft Windows 2000 Server SP1
  • Microsoft Windows 2000 Server SP2
  • Microsoft Windows 2000 Advanced Server SP1
  • Microsoft Windows 2000 Advanced Server SP2
  • Microsoft Windows 2000 Professional SP1
  • Microsoft Windows 2000 Professional SP2
  • Microsoft Windows NT Workstation 4.0
  • Microsoft Windows NT Workstation 4.0 SP4
  • Microsoft Windows NT Workstation 4.0 SP5
  • Microsoft Windows NT Workstation 4.0 SP6
  • Microsoft Windows NT Workstation 4.0 SP6a
  • Microsoft Windows NT Server 4.0
  • Microsoft Windows NT Server 4.0 SP4
  • Microsoft Windows NT Server 4.0 SP5
  • Microsoft Windows NT Server 4.0 SP6
  • Microsoft Windows NT Server 4.0 SP6a

This article was previously published under Q301514

SYMPTOMS

Services for Unix (SFU) 2.0 includes a Telnet server. The SFU 2.0 Telnet server has a memory leak that can be triggered by a malformed user request.

If a user repeatedly sends a malformed request to the Telnet server kernel memory may be depleated so that performance is slowed and the computer may stop responding (hang).

NOTE: Both Windows NT 4.0 and Windows 2000 include a Telnet server that does not have this problem.

RESOLUTION

A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English-language version of this fix should have the following file attributes or later:
   Date         Time   Version        Size     File name
   --------------------------------------------------------
   28-Jun-2001  09:40  5.3000.1314.7   81,408  Cladmin.dll
   26-Jun-2001  21:10  5.3000.1314.7  171,008  Sfucom.dll
   26-Jun-2001  21:10  5.3000.1314.7   44,544  Sfuwbem.dll
   26-Jun-2001  21:10                   3,748  Style.css
   26-Jun-2001  21:10  5.3000.1314.7  119,808  Telnet.exe
   28-Jun-2001  08:55  5.3000.1314.7  119,808  Telnetc.exe
   28-Jun-2001  08:55  5.3000.1314.7  129,024  Tlntsess.exe
   28-Jun-2001  08:55  5.3000.1314.7  146,944  Tlntsvr.exe
   28-Jun-2001  08:55  5.3000.1314.7   14,848  Tlntsvrp.dll
   28-Jun-2001  12:39  5.3000.1314.7  146,944  Tnadmin.exe
				

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Modification Type:MinorLast Reviewed:9/26/2005
Keywords:kbHotfixServer kbQFE kbbug kbenv kbfix kbQFE KB301514