Perl-HTTPd File Disclosure Vulnerability



Date Discovered

December 31, 2002


It has been reported that Perl-HTTPd fails to properly sanitize some web requests. By exploiting this issue, an attacker is able to traverse outside of the established web root by using dot-dot-slash (../) directory traversal sequences. An attacker may be able to obtain any web server readable files from outside of the web root directory.

Technologies Affected

  • Perl-HTTPd Perl-HTTPd 1.0.0
  • Perl-HTTPd Perl-HTTPd 1.0.1


Block external access at the network boundary, unless external parties require service.
Allow access to Web services for trusted hosts and networks only.

Webservers should ignore or modify requests that contain '../' or other suspicious and most likely malicious strings.
If possible, configure Perl-HTTPd to ignore requests that contain suspicious strings.

Fixes available:



This vulnerability was reported in the product changelog.

© 1995- Symantec Corporation

Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from


The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.

Symantec, Symantec products, Symantec Security Response, and are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.