IIS Causes Memory Leak When Using Secure Sockets Layer (SSL)

ID: Q192295

The information in this article applies to:

Microsoft Internet Information Server version 4.0

SYMPTOMS

Microsoft Internet Information Server (IIS) causes a memory leak when you use the Secure Sockets Layer (SSL). By tracking the amount of private bytes for Inetinfo.exe, you will see that over time private bytes increase.

CAUSE

The memory leak occurs on each client accessed over the HTTP connection. IIS fails to free the memory allocated by Schannel.dll.

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Windows NT service pack.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://support.microsoft.com/support/supportnet/default.asp

The English version of this fix should have the following file attributes or later:


   Date      Time                 Size    File Name     Platform
   -------------------------------------------------------------
   10/14/98  05:40p                27,696 admwprox.dll  (x86)
   10/14/98  05:42p               330,976 asp.dll       (x86)
   10/14/98  05:40p                43,456 coadmin.dll   (x86)
   10/14/98  05:41p                11,168 ftpctrs2.dll  (x86)
   10/14/98  05:41p                81,376 ftpsvc2.dll   (x86)
   10/14/98  05:40p                10,224 iisfecnv.dll  (x86)
   10/14/98  05:40p                61,920 iislog.dll    (x86)
   10/14/98  05:40p                16,848 infoadmn.dll  (x86)
   10/14/98  05:40p               184,192 infocomm.dll  (x86)
   10/14/98  05:40p                 9,584 infoctrs.dll  (x86)
   10/14/98  05:39p                47,936 isatq.dll     (x86)
   10/14/98  05:40p                29,520 iscomlog.dll  (x86)
   10/14/98  05:40p                13,856 lonsint.dll   (x86)
   10/14/98  05:40p                71,232 metadata.dll  (x86)
   10/14/98  05:40p                 7,488 rpcref.dll    (x86)
   10/14/98  05:40p                12,592 spud.sys      (x86)
   10/14/98  05:40p                18,032 svcext.dll    (x86)
   10/14/98  05:41p                14,752 w3ctrs.dll    (x86)
   10/14/98  05:41p               226,864 w3svc.dll     (x86)
   10/14/98  05:40p                60,192 wam.dll       (x86)

   10/14/98  05:42p                49,424 admwprox.dll  (Alpha)
   10/14/98  05:44p               545,552 asp.dll       (Alpha)
   10/14/98  05:42p                77,072 coadmin.dll   (Alpha)
   10/14/98  05:43p                17,168 ftpctrs2.dll  (Alpha)
   10/14/98  05:43p               126,224 ftpsvc2.dll   (Alpha)
   10/14/98  05:42p                17,680 iisfecnv.dll  (Alpha)
   10/14/98  05:42p               110,864 iislog.dll    (Alpha)
   10/14/98  05:42p                25,872 infoadmn.dll  (Alpha)
   10/14/98  05:42p               302,864 infocomm.dll  (Alpha)
   10/14/98  05:42p                15,120 infoctrs.dll  (Alpha)
   10/14/98  05:41p                82,704 isatq.dll     (Alpha)
   10/14/98  05:42p                45,840 iscomlog.dll  (Alpha)
   10/14/98  05:42p                23,312 lonsint.dll   (Alpha)
   10/14/98  05:42p                13,584 lonsiw95.dll  (Alpha)
   10/14/98  05:42p               131,856 metadata.dll  (Alpha)
   10/14/98  05:42p                12,048 rpcref.dll    (Alpha)
   10/14/98  05:42p                20,912 spud.sys      (Alpha)
   10/14/98  05:42p                29,456 svcext.dll    (Alpha)
   10/14/98  05:43p                21,264 w3ctrs.dll    (Alpha)
   10/14/98  05:43p               380,688 w3svc.dll     (Alpha)
   10/14/98  05:43p                98,576 wam.dll       (Alpha)

NOTE: If you contact Microsoft to obtain this fix, a fee may be charged. This fee is refundable if it is determined that you only require the fix you requested. However, this fee is non-refundable if you request additional technical support, if your no-charge technical support period has expired, or if you are not eligible for standard no-charge technical support.

For more information about eligibility for no-charge technical support, see the following article in the Microsoft Knowledge Base:

Q154871 : Determining If Your Product Is Eligible for No-Charge Technical Support

STATUS

Microsoft has confirmed this to be a problem in Internet Information Server version 4.0.

Additional query words: IIS hotfix hot fix qfe quick fix engineering patch

Keywords :
Version : WINNT:4.0
Platform : winnt
Issue type : kbbug