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CERT Coordination Center

Microsoft Internet Explorer vulnerable to DoS via crafted ftp:// URL

Vulnerability Note VU#199408

Original Release Date: 2002-09-16 | Last Revised: 2002-09-16


Microsoft Internet Explorer has a vulnerability that may cause the program to crash when opening some FTP URL's.


Microsoft Internet Explorer with Browsing Enhancements (installed by default on some versions of Windows) may crash when opening an FTP URL containing '#' or '&' characters.


Users who open a URL of the forms described above may lose session data and be forced to restart IE.


The CERT/CC is currently unaware of a practical solution to this problem.

Examine URL's of links before clicking them, and do not open URL's of the forms described above.

Vendor Information

Affected   Unknown   Unaffected

Microsoft Corporation

Updated:  October 20, 2001



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A



Thanks to Elie Aka Lupin Bursztein for discovering this vulnerability.

This document was written by Shawn Van Ittersum.

Other Information

CVE IDs: None
Severity Metric: 0.02
Date Public: 2001-05-11
Date First Published: 2002-09-16
Date Last Updated: 2002-09-16 21:58 UTC
Document Revision: 11

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