CVE-2007-6737: Improper Authentication

FTPServer.py in pyftpdlib before 0.2.0 does not increment the attemptedlogins count for a USER command that specifies an invalid username, which makes it easier for remote attackers to obtain access via a brute-force attack...

CVE-2009-5011: Concurrent Execution using Shared Resource with Improper Synchronization

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 getpeername function having an ENOTCONN error, a different vulnerabilit...

CVE-2007-6740: Undefined Security Weakness

The ftpSTOU function in FTPServer.py in pyftpdlib before 0.2.0 does not limit the number of attempts to discover a unique filename, which might allow remote authenticated users to cause a denial of service via a STOU command...

CVE-2008-7264: Improper Input Validation

The ftpQUIT function in ftpserver.py in pyftpdlib before 0.5.0 allows remote authenticated users to cause a denial of service file descriptor exhaustion and daemon outage by sending a QUIT command during a disallowed data-transfer attempt...

CVE-2008-7263: Improper Authentication

ftpserver.py in pyftpdlib before 0.5.0 does not delay its response after receiving an invalid login attempt, which makes it easier for remote attackers to obtain access via a brute-force attack...