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LIN1021-2628 : Security Advisory - python - CVE-2021-4189

Created: Jan 25, 2022    Updated: Oct 12, 2022
Resolved Date: Sep 21, 2022
Found In Version: 10.21.20.1
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Userspace

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.

https://nvd.nist.gov/vuln/detail/CVE-2021-4189

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