Watchguard Firebox PPTP VPN User Enumeration Vulnerability

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The Firebox (http://www.watchguard.com/products/) X family of UTM security appliances delivers "the industry's best combination of strong security, reliability, and performance all at a compelling price point". The PPTP VPN service offered by Watchguard Firebox allows valid usernames to be enumerated.

http://www.securiteam.com/securitynews/5WP051PO0A.html