[pyftpdlib] Directory traversal in pyftpdlib

Multiple directory traversal vulnerabilities in FTPServer.py in pyftpdlib before 0.3.0 allow remote authenticated users to access arbitrary files and directories via vectors involving a symlink in a pathname to a (1) CWD, (2) DELE, (3) STOR, or (4) RETR command.

References

• https://nvd.nist.gov/vuln/detail/CVE-2008-7262
• https://github.com/giampaolo/pyftpdlib/issues/55
• https://github.com/advisories/GHSA-jw88-wxv5-7c4f