CVE ID:	CVE-2021-4189
Description:	A flaw was found in Python, specifically in the FTP (File Transfer Protocol) client library in PASV (passive) mode. The issue is how the FTP client trusts the host from the PASV response by default. This flaw allows an attacker to set up a malicious FTP server that can trick FTP clients into connecting back to a given IP address and port. This vulnerability could lead to FTP client scanning ports, which otherwise would not have been possible.
Test IDs:	1.3.6.1.4.1.25623.1.0.126133   1.3.6.1.4.1.25623.1.1.1.2.2023.3432   1.3.6.1.4.1.25623.1.0.126134   1.3.6.1.4.1.25623.1.0.126132   1.3.6.1.4.1.25623.1.1.2.2022.1911   1.3.6.1.4.1.25623.1.1.1.2.2023.3477   1.3.6.1.4.1.25623.1.0.892919
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-4189 https://access.redhat.com/security/cve/CVE-2021-4189 https://access.redhat.com/security/cve/CVE-2021-4189 https://bugs.python.org/issue43285 https://bugs.python.org/issue43285 https://bugzilla.redhat.com/show_bug.cgi?id=2036020 https://bugzilla.redhat.com/show_bug.cgi?id=2036020 https://github.com/python/cpython/commit/0ab152c6b5d95caa2dc1a30fa96e10258b5f188e https://github.com/python/cpython/commit/0ab152c6b5d95caa2dc1a30fa96e10258b5f188e https://python-security.readthedocs.io/vuln/ftplib-pasv.html https://python-security.readthedocs.io/vuln/ftplib-pasv.html https://security-tracker.debian.org/tracker/CVE-2021-4189 https://security-tracker.debian.org/tracker/CVE-2021-4189 https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html