Title: FloosieTek FTGatePro Mail Server User Enumeration Weakness
Severity: MODERATE
Description:
FloosieTek FTGatePro Mail Server leaks information that may allow remote attackers to enumerate mail server users. The software is reported to return different responses based on whether or not a username is valid during authentication.
For example, the following response occurs when a username is not valid:
user InValid
-ERR InValid doesn't get mail here <==
On the other hand, the server returns the following when a username is valid:
user user1
+OK user1 gets mail here <==
This information is useful if an attacker is attempting to brute-force mail server user accounts, as it is possible to determine which users are valid.
Affected Products:
- Floosietek FTGatePro 1.22.0(1331)
References:
- Floosietek: FTGate Homepage
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