User Enumeration Flaw in Watchguard Firebox VPN Service
CVE-2008-1618
Currently unrated
Summary
The PPTP VPN service in Watchguard Firebox versions prior to 10 is vulnerable due to improper handling of error responses during the MS-CHAPv2 authentication handshake. This vulnerability allows remote attackers to determine which usernames are valid by observing the differing error messages generated for valid and invalid usernames. Exploiting this issue could lead to further attacks or unauthorized access as attackers can compile a list of valid usernames for targeted exploitation.
References
Timeline
Vulnerability published
Vulnerability Reserved