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Home >> Browse Vulnerability Assessment Database >> General >> osCommerce Malformed Session ID XSS Vulnerability

Vulnerability Assessment Details

osCommerce Malformed Session ID XSS Vulnerability

Vulnerability Assessment Summary
Detect osCommerce Malformed Session ID XSS

Detailed Explanation for this Vulnerability Assessment

osCommerce is an online shop e-commerce solution under on going development
by the open source community. Its feature packed out-of-the-box installation
permits store owners to setup, run, and maintain their online stores with
minimum effort and with absolutely no costs or license fees involved.

osCommerce is vulnerable to a XSS flaw. The flaw can be exploited when a
malicious user passes a malformed session ID to URI.

Solution :
This is the response from the developer. To fix the issue, the $_sid parameter
needs to be wrapped around tep_output_string() in the tep_href_link() function
defined in includes/functions/html_output.php.

Before:
if (isset($_sid)) {
$link .= $separator . $_sid

}

After:
if (isset($_sid)) {
$link .= $separator . tep_output_string($_sid)

}

osCommerce 2.2 Milestone 3 will redirect the user to the index page when
a malformed session ID is used, so that a new session ID can be generated.

Network Security Threat Level: Medium

Networks Security ID: 9238

Vulnerability Assessment Copyright: This script is Copyright (C) 2003 Noam Rathaus

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