13248 : Winmail Server FTP PORT Command Port Scan Bounce Weakness
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
6	957	over 8 years ago	7 months ago	4 times	100%

Timeline

Disclosure Date
2005-01-27

Description

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.

Classification

Location: Remote / Network Access
Attack Type: Information Disclosure
Impact: Loss of Confidentiality
Solution: Upgrade
Exploit: Exploit Public

Solution

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.

Products

AMAX Information Technologies Inc.

Winmail Server

4.0 (Build 1112)

References

Security Tracker: 1013017
Bugtraq ID: 12388
Related OSVDB ID: 13244 13245 13246 13247
Secunia Advisory ID: 14053
CVE ID: 2005-0315 (see also: NVD)
Mail List Post: http://archives.neohapsis.com/archives/bugtraq/1995_3/0047.html
http://archives.neohapsis.com/archives/bugtraq/2005-01/0306.html
Generic Informational URL: http://www.cert.org/tech_tips/ftp_port_attacks.html
Other Advisory URL: http://www.security.org.sg/vuln/magicwinmail40.html

Credit

Tan Chew Keong

CVSSv2 Score

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

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