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CERT Coordination Center

Unix Manual PHP-Script does not adequately validate user input thereby allowing arbitrary command execution

Vulnerability Note VU#672419

Original Release Date: 2002-09-26 | Last Revised: 2002-09-26


User Manual does not adequately validate user input, allowing attackers to execute arbitrary commands on the server.


Unix Manual (as known as manual.php) is a PHP script used to lookup and display man pages on the web. User Manual does not adequately filter user input before passing it to the shell, allowing attackers to submit and execute arbitrary commands on the server.


Remote attackers can execute arbitrary commands on the server with privileges of the web server process.


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

Vendor Information

Affected   Unknown   Unaffected

Marcus S. Xenakis

Updated:  September 24, 2002



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 Florian Hobelsberger of BlueScreen for reporting this vulnerability.

This document was written by Shawn Van Ittersum.

Other Information

CVE IDs: CVE-2001-1214
Severity Metric: 4.28
Date Public: 2001-12-15
Date First Published: 2002-09-26
Date Last Updated: 2002-09-26 22:02 UTC
Document Revision: 4

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