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python: ftplib should not use the host from the PASV response

🗓️ 24 Aug 2021 12:50:36Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 5 Views

Python FTP client in passive mode trusts the PASV host, enabling attackers to redirect connections.

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Red Hat Enterprise Linux7ppc64lerh-python38-python3.8.11-2.el7rh-python38-python-3.8.11-2.el7.ppc64le.rpm
Red Hat Enterprise Linux7s390xrh-python38-python3.8.11-2.el7rh-python38-python-3.8.11-2.el7.s390x.rpm
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Red Hat Enterprise Linux7s390xrh-python38-python-cryptography2.8-5.el7rh-python38-python-cryptography-2.8-5.el7.s390x.rpm
Red Hat Enterprise Linux7x86_64rh-python38-python-cryptography2.8-5.el7rh-python38-python-cryptography-2.8-5.el7.x86_64.rpm
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03 Jul 2026 02:09Current
6.8Medium risk
Vulners AI Score6.8
CVSS 3.15.3
EPSS0.02602
SSVC
CWE-252
file transferpassive modeback connectionmalicious servertrust hostsecurity flaw
5