Date Discovered December 31, 2002
Description 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.
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.
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