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Mike Spice's Quiz Me! does not adequately validate user input

Vulnerability Note VU#318835

Original Release Date: 2002-09-18 | Last Revised: 2002-09-18

Overview

Mike Spice's Quiz Me! does not adequately validate user input, allowing directory traversal. As a result, an attacker can cause Quiz Me! to overwrite any file on the server to which the web server process has write privileges.

Description

Mike Spice's Quiz Me! is a CGI script written in Perl, enabling webmasters to publish interactive quizzes on their sites. The CGI variable 'quiz' is passed by Quiz Me! to Perl's open() function, without adequate validation to filter '../' sequences and null bytes. As a result, an attacker can cause Quiz Me! to traverse directories and overwrite any file on the server to which the web server process has write privileges.

Impact

Remote attackers can overwrite files on the server.

Solution

Upgrade

Upgrade to version 0.6 or later of Quiz Me!:

http://www.fuzzymonkey.org/files/quiz-0.6.zip

Vendor Information

318835
 

CVSS Metrics

Group Score Vector
Base
Temporal
Environmental

References

Acknowledgements

Thanks to Mike Spice for reporting this vulnerability.

This document was written by Shawn Van Ittersum.

Other Information

CVE IDs: None
Severity Metric: 3.42
Date Public: 2002-01-10
Date First Published: 2002-09-18
Date Last Updated: 2002-09-18 14:08 UTC
Document Revision: 6

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