Microsoft Security Bulletin MS99-039

Patch Available for "Domain Resolution" and "FTP Download" Vulnerabilities

Patch Availability Information Updated: March 21, 2003
Originally Posted: September 23, 1999
Revised: September 30, 1999

Summary

Microsoft has released a patch that eliminates two security vulnerabilities in Microsoft® Internet Information Server (IIS) 4.0 and Microsoft Commercial Internet System (MCIS) 2.5. The vulnerabilities allow security restrictions in IIS and MCIS to be bypassed under certain conditions, as discussed below. Frequently asked questions regarding this vulnerability can be found at /technet/security/bulletin/fq99-039.mspx.

Issue

There are two vulnerabilities at issue here:

Neither vulnerability provides a means to usurp control of the server. A patch is available that eliminates both vulnerabilities.

Affected Software Versions

Vulnerability Identifiers

Patch Availability

More Information

Please see the following references for more information related to this issue.

Obtaining Support on this Issue

This is a fully supported patch. Information on contacting Microsoft Technical Support is available at http://support.microsoft.com/contactussupport/?ws=support.

Acknowledgments

Microsoft acknowledges Rich Harrison of Halliburton Company for discovering the "Domain Resolution" vulnerability and reporting it to us. Microsoft acknowledges Roberto Franceschetti for discovering the FTP Access vulnerability and bringing it to our attention.

Revisions

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