CVE-2021-4189

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.

Link	Resource
https://github.com/python/cpython/commit/0ab152c6b5d95caa2dc1a30fa96e10258b5f188e	Patch Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-4189	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2036020	Issue Tracking Patch
https://security-tracker.debian.org/tracker/CVE-2021-4189	Third Party Advisory
https://bugs.python.org/issue43285	Patch Vendor Advisory
https://python-security.readthedocs.io/vuln/ftplib-pasv.html	Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20221104-0004/	Third Party Advisory

Configuration 1

cpe:2.3:a:python:python:*:*:*:*:*:*:*:* cpe:2.3:a:python:python:*:*:*:*:*:*:*:* cpe:2.3:a:python:python:*:*:*:*:*:*:*:* cpe:2.3:a:python:python:*:*:*:*:*:*:*:* cpe:2.3:a:python:python:3.10.0:-:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* cpe:2.3:a:redhat:software_collections:-:*:*:*:*:*:*:* cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*

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Published : 2022-08-24 04:15

Updated : 2022-12-08 03:57

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NVD link : CVE-2021-4189

Mitre link : CVE-2021-4189

Redhat

Software Collections

CWE-252

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