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Microsoft KB Archive/925258

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Knowledge Base


FIX: An application may experience a heap corruption when the application passes more than 49 Arabic characters to the SnaNlsMapString function in Host Integration Server 2004

Article ID: 925258

Article Last Modified on 12/4/2007



APPLIES TO

  • Microsoft Host Integration Server 2004 Standard Edition
  • Microsoft Host Integration Server 2004 Enterprise Edition



SYMPTOMS

Consider the following scenario. You have an application that uses the SnaNlsMapString function and the Trnsbidi.dll file that are included in Microsoft Host Integration Server 2004. The application uses the SnaNlsMapString function and the Trnsbidi.dll file to convert Arabic characters from Extended Binary Coded Decimal Interchange Code (EBCDIC) to ASCII. The application passes more than 49 Arabic characters to the SnaNlsMapString function. In this scenario, the application may experience a heap corruption.

The heap corruption may cause the following symptoms to occur:

  • Some converted Arabic characters may be reversed, or some converted Arabic characters may be located in an incorrect location. These positions are based on where the Arabic characters were located before they were converted from EBCDIC to ASCII.
  • Some Arabic characters may be incorrectly converted when they are converted from EBCDIC to ASCII and then back to EBCDIC. Therefore, some resulting EBCDIC characters may differ from the original EBCDIC characters.
  • The SnaNlsMapString function may not indicate the correct number of Arabic characters that are converted from EBCDIC to ASCII or that are converted from ASCII to EBCDIC.


RESOLUTION

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:

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:

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 item in Control Panel.

File name File version File size Date Time Platform
Trnsbidi.dll 6.0.2045.0 36,352 19-Sep-2006 22:08 x86


STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information about software update terminology, 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: kbfix kbqfe kbpubtypekc kbhotfixserver KB925258