Multiple XSS in eShop for Wordpress

[advisory () htbridge ch]

Vulnerability ID: HTB23034
Reference: http://www.htbridge.ch/advisory/multiple_xss_in_eshop_for_wordpress.html
Product: eShop for Wordpress
Vendor: Rich Pedley ( http://wordpress.org/extend/plugins/eshop/ ) 
Vulnerable Version: 6.2.8 and probably prior
Tested on: 6.2.8
Vendor Notification: 20 July 2011 
Vulnerability Type: XSS (Cross Site Scripting)
Status: Fixed by Vendor
Risk level: Medium 
Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ ) 

Vulnerability Details:
High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in eShop for Wordpress, which can be 
exploited to perform cross-site scripting attacks against logged-in Wordpress Administrator.

1) Input passed via the "eshoptemplate" GET parameter to /wp-admin/admin.php (when "page" is set to 
"eshop-templates.php") is not properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in a administrator's browser session in context of 
affected website.

The following PoC code is available:

http://[host]/wp-admin/admin.php?page=eshop-templates.php&eshoptemplate=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E

2) Input passed via the "action" GET parameter to /wp-admin/admin.php (when "page" is set to "eshop-orders.php") is not 
properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in a administrator's browser session in context of 
affected website.

The following PoC code is available:

http://[host]/wp-admin/admin.php?page=eshop-orders.php&view=1&action=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E

3) Input passed via the "viewemail" GET parameter to /wp-admin/admin.php (when "page" is set to "eshop-orders.php") is 
not properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in a administrator's browser session in context of 
affected website.

http://[host]/wp-admin/admin.php?page=eshop-orders.php&viewemail=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E
 
Solution: Upgrade to the most recent version