Perl-HTTPd File Disclosure Vulnerability

Risk
High

Date Discovered
12-31-2002

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.

Components Affected
Perl-HTTPd Perl-HTTPd 1.0
Perl-HTTPd Perl-HTTPd 1.0.1

Recommendations
Block external access at the network boundary, unless service is required by external parties.
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:


Perl-HTTPd Perl-HTTPd 1.0:

Perl-HTTPd Upgrade perl-httpd-1.0.2.tar.gz
http://citrustech.net/~chrisj/perl-httpd/perl-httpd-1.0.2.tar.gz

Perl-HTTPd Upgrade perl-httpd-1.0.2.tar.gz
http://citrustech.net/~chrisj/perl-httpd/perl-httpd-1.0.2.tar.gz

References
Source: Perl-HTTPd Home Page
URL: http://citrustech.net/~chrisj/perl-httpd/

Credits
This vulnerability was reported in the product changelog.

Copyright (c) 2003 by Symantec Corp.
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