CVE-2009-5010 Information

Description

Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.1 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 return value of None a different vulnerability than CVE-2010-3494.

Reference

http://bugs.python.org/issue6706 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 http://code.google.com/p/pyftpdlib/source/diff?spec=svn439&r=439&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