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Mike Spice's Vote does not adequately validate user input

Vulnerability Note VU#250107

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

Overview

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

Description

Mike Spice's Vote is a CGI script written in Perl and designed to add polling capabilities to web sites. The CGI variable 'type' is passed by Vote to Perl's open() function, without adequate validation to filter '../' sequences and null bytes. As a result, an attacker can cause Vote 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 1.3 or later of Vote:

http://www.fuzzymonkey.org/files/vote-1.3.zip

Vendor Information

250107
 

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: 2002-01-09
Date First Published: 2002-09-18
Date Last Updated: 2002-09-18 14:10 UTC
Document Revision: 4

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