Some vulnerabilities have been reported in PHPCart, which can be exploited by malicious people to conduct cross-site scripting attacks and manipulate orders.

1) The problem is that the "price" and "postage" parameters are not properly verified in "phpcart.php". This can e.g. be exploited to change the price of a product being bought by modifying the "price" parameter directly in the URL.

2) Input passed to various parameters (e.g. the "quantity" and "Add Engraving" field or certain address details during the checkout) are not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.

Vulnerability #1 is reported in version 3.2 and versions 3.4 through 4.6.4 and vulnerability #2 is reported in versions 3.4 through 4.6.4. Other versions may also be affected.

Solution
Verify shopping requests before shipping products. Filter malicious characters and character sequences using a proxy.

Provided and/or discovered by
1) Lostmon
2) h4x0r

Changelog
Further details available in Customer Area

Original Advisory
Lostmon:
http://lostmon.blogspot.com/2005/04/phpcart-price-manipulation.html

h4x0r:
http://packetstorm.linuxsecurity.com/0808-exploits/phpcart-xss.txt

Deep Links
Links available in Customer Area