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CERT Coordination Center

zml.cgi does not adequately validate user input thereby allowing directory traversal

Vulnerability Note VU#764027

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

Overview

zml.cgi does not adequately validate user input, allowing for directory traversal out of the web root directory.

Description

The perl script zml.cgi reads and parses a file on the server, executing certain Server Side Include (SSI) directives found in the file. The script accepts a CGI parameter specifying the file that should be read and parsed. The script does not adequately validate this parameter, allowing for directory traversal out of the web root directory.

Impact

Attackers may read any file readable by the web server process.

Solution

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

Vendor Information

764027
 

CVSS Metrics

Group Score Vector
Base
Temporal
Environmental

References

Acknowledgements

Thanks to Blackshell Security Advisory for reporting this vulnerability.

This document was written by Shawn Van Ittersum.

Other Information

CVE IDs: CVE-2001-1209
Severity Metric: 1.71
Date Public: 2001-12-31
Date First Published: 2002-09-26
Date Last Updated: 2002-09-26 22:02 UTC
Document Revision: 6

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