Microsoft KB Archive/896725

= A truncated Samba server response causes an access violation in the Lsass.exe program on a Windows XP-based client computer =

Article ID: 896725

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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SYMPTOMS
Consider the following scenario. You have a Microsoft Windows XP-based client computer that is joined to a Samba domain controller. The version of the Samba server is earlier than version 3.0.12. If a program on the client computer makes a LsaLookupSids function call to the Samba server to look up more than 255 Security Identifiers (SIDs), the Samba server truncates the response to the LsaLookupSids function call. This truncated Samba server response causes an access violation in the Lsass.exe program on the client computer.



CAUSE
This problem occurs because the Samba server versions that are earlier than version 3.0.12 truncate the size of the return buffer to 255.



RESOLUTION
To resolve this problem, do any one of the following:
 * Upgrade the Samba server to version 3.0.12 or a later Samba version.
 * Apply the hotfix that is described in this article to the Windows XP-based client computer.

Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required.

Restart requirement
You must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version        Size     File name --  24-Feb-2005  23:53  6.1.22.4       14,048   Spmsg.dll 07-Apr-2005 13:02  5.1.2600.2649  616,960  Advapi32.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

For more information about the standard terminology that is used to describe Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbqfe kbhotfixserver kbwinxpsp3fix kbwinxppresp3fix kbfix kbbug KB896725

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