Unchecked Return Value Affecting platform-python package, versions <0:3.6.8-45.el8.alma


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
1.06% (78th percentile)

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  • Snyk IDSNYK-ALMALINUX8-PLATFORMPYTHON-5635029
  • published28 May 2023
  • disclosed10 May 2022

Introduced: 10 May 2022

CVE-2021-4189  (opens in a new tab)
CWE-252  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 platform-python to version 0:3.6.8-45.el8.alma or higher.
This issue was patched in ALSA-2022:1986.

NVD Description

Note: Versions mentioned in the description apply only to the upstream platform-python package and not the platform-python package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1