This host is running pyftpdlib FTP server and is prone to Denial of Service vulnerability.

Successful exploitation will allow attacker to cause a denial of service. Impact Level: Application

Upgrade to pyftpdlib version 0.5.2 or later, For updates refer to http://code.google.com/p/pyftpdlib/downloads/list

The flaw is due to race condition in the FTPHandler class, which allows remote attackers to cause a denial of service by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected return value of None.

ftpserver.py in pyftpdlib before 0.5.1

• http://code.google.com/p/pyftpdlib/issues/detail?id=91
• http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
• http://code.google.com/p/pyftpdlib/source/detail?r=439

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Updated on 2015-03-25