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

🗓️ 10 May 2022 13:39:18Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 6 Views

Python file transfer protocol client in passive mode trusts the host in the PASV response, enabling attackers to redirect the client to an IP and port.

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Red Hat Enterprise Linux8.5noarchbabel2.5.1-10.module+el8.5.0+11014+88fc0d0bbabel-2.5.1-10.module+el8.5.0+11014+88fc0d0b.noarch.rpm
Red Hat Enterprise Linux8.1aarch64cython-debugsource0.28.1-7.module+el8.1.0+3111+de3f2d8ecython-debugsource-0.28.1-7.module+el8.1.0+3111+de3f2d8e.aarch64.rpm
Red Hat Enterprise Linux8.1ppc64lecython-debugsource0.28.1-7.module+el8.1.0+3111+de3f2d8ecython-debugsource-0.28.1-7.module+el8.1.0+3111+de3f2d8e.ppc64le.rpm
Red Hat Enterprise Linux8.1s390xcython-debugsource0.28.1-7.module+el8.1.0+3111+de3f2d8ecython-debugsource-0.28.1-7.module+el8.1.0+3111+de3f2d8e.s390x.rpm
Red Hat Enterprise Linux8.1x86_64cython-debugsource0.28.1-7.module+el8.1.0+3111+de3f2d8ecython-debugsource-0.28.1-7.module+el8.1.0+3111+de3f2d8e.x86_64.rpm
Red Hat Enterprise Linux8.4aarch64numpy-debugsource1:1.14.2-16.module+el8.4.0+9406+221a4565numpy-debugsource-1:1.14.2-16.module+el8.4.0+9406+221a4565.aarch64.rpm
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Red Hat Enterprise Linux8.4x86_64numpy-debugsource1:1.14.2-16.module+el8.4.0+9406+221a4565numpy-debugsource-1:1.14.2-16.module+el8.4.0+9406+221a4565.x86_64.rpm
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28 Jun 2026 08:55Current
6.8Medium risk
Vulners AI Score6.8
CVSS 3.15.3
EPSS0.02602
SSVC
CWE-252
file transfer protocolpassive modehost redirectionport scanning
6