DOCUMENT:Q155056 15-MAR-2000 [iis] TITLE :IIS Security Concern Using Batch Files for CGI PRODUCT :Internet Information Server PROD/VER:winnt:1.0 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server 1.0 ------------------------------------------------------------------------------- SYMPTOMS ======== Web clients that send Common Gateway Interface (CGI) requests to Internet Information Server (IIS) servers using batch files (.bat or .cmd) as CGI applications may gain undesired levels of access to the IIS server. CAUSE ===== Internet Information Server 1.0 (IIS) allowed the use of batch files as CGI applications. Using batch files as CGI applications exposed several security issues in IIS because the batch file processes run in the context of the full Windows NT console command processor (cmd.exe). RESOLUTION ========== Obtain the fix referenced below. STATUS ====== Batch file processing support was removed from the IIS product due to security concerns. Microsoft has confirmed this to be a problem in IIS version 1.0. This problem was corrected in the latest Windows NT 3.51 U.S. Service Pack. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces): S E R V P A C K Additional query words: prodiis ====================================================================== Keywords : kbnetwork Technology : kbiisSearch kbiis100 Version : winnt:1.0 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.