Viprinet Multichannel VPN Router 300 - Persistent Cross-Site Scripting







Vulnerability title: Multiple Instances Of Cross-site Scripting In Viprinet Multichannel VPN Router 300

CVE: CVE-2014-2045

Vendor: Viprinet

Product: Multichannel VPN Router 300

Affected version: 2013070830/2013080900

Fixed version: 	2014013131/2014020702
Reported by: Tim Brown

	The data supplied to both the `old’ and `new’ web applications (the device has two web based management interfaces) was permanently stored and could be retrieved later by other users. This is a normal feature of many applications, however, in this instance the application failed to restrict the type of data that could be stored and also failed to sanitise it, meaning that it could not be safely rendered by the browser.

	Stored cross-site scripting could be triggered by:

		Attempting to login with a username of `<script>alert(1)</script>’ (affects `old’ interface and results in post-authentication cross-site Scripting when a legitimate administrator views the realtime log)
		Creating an account with a username of `<script>alert(1)</script>’ (affects both `old’ and `new’ interfaces once created)
		Setting the device’s hostname to `<script>alert(1)</script>’  (affects `old’ interface once created)

	A number of locations were identified as being vulnerable to reflective attacks, including:


	The inclusion of session IDs in all URLs partially mitigates the reflective cross-site scripting but could itself be considered a vulnerability since it is included in referred headers and log files.

	These are simply some examples of how this attack might be performed, and the it is believed that both the `old’ and `new’ web applications are systemically vulnerable to this.

Further details at:

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