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PYSEC-2010-25

Quick fix

PYSEC-2010-25 — pyftpdlib: upgrade to the fixed version with the command below.

pip install --upgrade 'pyftpdlib>=0.2.0'

Details

The ftp_PORT function in FTPServer.py in pyftpdlib before 0.2.0 does not prevent TCP connections to privileged ports if the destination IP address matches the source IP address of the connection from the FTP client, which might allow remote authenticated users to conduct FTP bounce attacks via crafted FTP data, as demonstrated by an FTP bounce attack against a NAT server, a related issue to CVE-1999-0017.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/pyftpdlib

Introduced in: 0Fixed in: 0.2.0

Fixpip install --upgrade 'pyftpdlib>=0.2.0'

References

http://code.google.com/p/pyftpdlib/source/detail?r=32[WEB]
http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY[WEB]
http://code.google.com/p/pyftpdlib/issues/detail?id=11[WEB]
http://code.google.com/p/pyftpdlib/source/diff?spec=svn32&r=32&format=side&path=/trunk/pyftpdlib/FTPServer.py[WEB]
https://github.com/advisories/GHSA-8xgx-75qw-6268[ADVISORY]