var-200012-0093
Vulnerability from variot

The client authentication interface for Check Point Firewall-1 4.0 and earlier generates different error messages for invalid usernames versus invalid passwords, which allows remote attackers to identify valid usernames on the firewall. Checkpoint Firewall-1 is a popular firewall package available from Checkpoint Software Technologies. Upon connecting to the firewall, the attacker enters a username and password. If the username and password are invalid, the firewall will respond with " not found". If the username is valid, and the password is invalid, the firewall will respond with "Access denied by Firewall-1 authentication". Upon successfully determining a valid username, a remote attacker could then attempt a brute force or password grinding attack to determine the password for the valid username. If successful, an attacker could then gain access to the firewall based on that user's privileges

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