DOCUMENT:Q241407 16-MAY-2002 [iis] TITLE :Files on an FTP Server Can Be Improperly Accessed PRODUCT :Internet Information Server PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS:kbWinNT400PreSP7Fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== After you apply the hotfix referenced in the following Microsoft Knowledge Base article, there is a possibility that files located on a Microsoft FTP server can be viewed and downloaded regardless of NTFS file or folder permissions. Q237987 FTP GET Does Not Work Correctly on UNC Virtual Directories RESOLUTION ========== If the aforementioned hotfix is applied to your IIS 4.0-based computer or if you have applied a hotfix with the version number of 0719 through 0722, it is recommended that you update your system with the security patch mentioned below. A supported fix is now available from Microsoft, but it is only intended to correct the problem described in this article and should be applied only to systems 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 on support costs, please go to the following address on the World Wide Web: http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS NOTE: In special cases, charges that are normally incurred for support calls may be canceled, if a Microsoft Support Professional determines that a specific update will resolve your problem. Normal support costs will apply to additional support questions and issues that do not qualify for the specific update in question. The English version of this fix should have the following file attributes or later: Date Time Size File name Platform ----------------------------------------------------- 09/16/99 12:40PM 322 KB Asp.dll x86 09/16/99 12:38PM 43 KB Coadmin.dll x86 09/16/99 12:39PM 11 KB Ftpctrs2.dll x86 09/16/99 12:39PM 80 KB Ftpsvc2.dll x86 09/16/99 11:49PM 12 KB Httpext.h x86 09/16/99 12:38PM 18 KB Iisadmin.dll x86 09/16/99 12:38PM 62 KB Iislog.dll x86 09/16/99 12:38PM 17 KB Infoadmn.dll x86 09/16/99 12:38PM 181 KB Infocomm.dll x86 09/16/99 12:38PM 29 KB Iscomlog.dll x86 09/16/99 12:39PM 11 KB Iwrps.dll x86 09/16/99 12:37PM 70 KB Metadata.dll x86 09/16/99 12:38PM 51 KB Nsepm.dll x86 09/16/99 12:39PM 15 KB W3ctrs.dll x86 09/16/99 12:39PM 224 KB W3svc.dll x86 09/16/99 12:38PM 86 KB Wam.dll x86 09/16/99 03:40PM 537 KB Asp.dll Alpha 09/16/99 03:38PM 76 KB Coadmin.dll Alpha 09/16/99 03:39PM 17 KB Ftpctrs2.dll Alpha 09/16/99 03:40PM 124 KB Ftpsvc2.dll Alpha 09/16/99 03:40PM 28 KB Iisadmin.dll Alpha 09/16/99 03:40PM 110 KB Iislog.dll Alpha 09/16/99 03:40PM 26 KB Infoadmn.dll Alpha 09/16/99 03:40PM 181 KB Infocomm.dll Alpha 09/16/99 03:40PM 297 KB Iscomlog.dll Alpha 09/16/99 03:40PM 17 KB Iwrps.dll Alpha 09/16/99 03:40PM 129 KB Metadata.dll Alpha 09/16/99 03:40PM 51 KB Nsepm.dll Alpha 09/16/99 03:40PM 21 KB W3ctrs.dll Alpha 09/16/99 03:40PM 377 KB W3svc.dll Alpha 09/16/99 03:40PM 146 KB Wam.dll Alpha This hotfix has been posted to the following Internet location as Iprftp4i.exe (x86) and Iprftp4a.exe (Alpha): ftp://ftp.microsoft.com/bussys/iis/iis-public/fixes/usa/IIS40/hotfixes-postSP6/security/IPRFTP-fix/ STATUS ====== Microsoft has confirmed this to be a problem in Internet Information Server 4.0. MORE INFORMATION ================ To view the IIS build number installed on the affected computer, perform the following steps: 1. Open Windows NT Explorer. 2. Open the folder where Ftpsvc2.dll is located, \System32\Inetsrv. 3. Right-click Ftpsvc2.dll. 4. Locate the last four digits of the file version. That number is the build number. NOTE: The hotfix file version should be 4.02.0724 or higher. For additional information about how to fix this problem in Internet Information Server version 4.0, click the article number below to view the article in the Microsoft Knowledge Base: Q242559 Files on an FTP Server Can Be Improperly Accessed For related information on this problem, please visit the following Microsoft Web site: http://www.microsoft.com/security/bulletins/ms99-039.asp For additional security-related information about Microsoft products, please visit the following Microsoft Web site: http://www.microsoft.com/security/ Additional query words: ====================================================================== Keywords : kbWinNT400PreSP7Fix Technology : kbiisSearch kbiis400 Version : winnt:4.0 Hardware : ALPHA x86 Issue type : kbbug Solution Type : kbfix ============================================================================= 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 2002.