CVE-2010-3494 Information

Description

Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.2 allows remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection leading to the accept function having an unexpected value of None for the address or an ECONNABORTED EAGAIN or EWOULDBLOCK error a related issue to CVE-2010-3492.

Reference

http://bugs.python.org/issue6706 http://code.google.com/p/pyftpdlib/issues/detail?id=104 http://code.google.com/p/pyftpdlib/issues/detail?id=105 http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY http://code.google.com/p/pyftpdlib/source/detail?r=556 http://code.google.com/p/pyftpdlib/source/diff?spec=svn556&r=556&format=side&path=/trunk/pyftpdlib/ftpserver.py http://www.openwall.com/lists/oss-security/2010/09/09/6 http://www.openwall.com/lists/oss-security/2010/09/11/2 http://www.openwall.com/lists/oss-security/2010/09/22/3 http://www.openwall.com/lists/oss-security/2010/09/24/3 https://bugs.launchpad.net/zodb/+bug/135108