13248 : Winmail Server FTP PORT Command Port Scan Bounce Weakness
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Disclosure Date


Winmail Server contains a flaw that may lead to an information disclosure. The problem is that the FTP server does not validate IP addresses supplied via the PORT command while in passive(PASV) mode. It is possible for a remote attacker to establish a connection between the FTP server and an arbitrary port on a third-party system, essentially conducting a port-scan. This can be used to obscure the the source of the port-scan, as well as scan internal systems that may be protected by a screening device.


Location: Remote / Network Access
Impact: Loss of Confidentiality
Solution: Upgrade
Exploit: Exploit Public


Upgrade to version 4.0 (Build 1318) or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.


AMAX Information Technologies Inc.
Winmail Server
4.0 (Build 1112)



CVSSv2 Score

CVSSv2 Base Score = 4.6
Source: nvd.nist.gov | Generated: 2005-06-06 | Disagree?

Access_vector_0 Access_complexity_2 Authentication_2 Confidentiality_impact_1 Integrity_impact_1 Availability_impact_1


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