Fixed in Barracuda Phone System firmware 3.0.004.012
Barracuda Phone System was vulnerable to an authenticated persistent XSS attack. Successful exploitation required an attacker to authenticate with the system and then submit a payload into one of the configuration settings. Another user\administrator was required to view\modify the affected setting to trigger the attack. This vulnerability was fixed in the version listed above.
To ensure maximum protection Barracuda Networks recommends that all customers upgrade to the latest generally available firmware and enable all definition updates.
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*** Note that the Barracuda Phone System was formerly known as the Cudatel Communication Server