Unchecked Return Value Affecting python27:2.7/python2-chardet package, versions <0:3.0.4-10.module_el8.6.0+2781+fed64c13


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.2% (58th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ALMALINUX8-PYTHON27-5624877
  • 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 python27:2.7/python2-chardet to version 0:3.0.4-10.module_el8.6.0+2781+fed64c13 or higher.
This issue was patched in ALSA-2022:1821.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python27:2.7/python2-chardet package and not the python27:2.7/python2-chardet 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 Scores

version 3.1