Unchecked Return Value Affecting python2.7 package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.37% (74th percentile)

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  • Snyk IDSNYK-DEBIAN11-PYTHON27-2329033
  • published1 Jan 2022
  • disclosed24 Aug 2022

Introduced: 1 Jan 2022

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

How to fix?

There is no fixed version for Debian:11 python2.7.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python2.7 package and not the python2.7 package as distributed by Debian. See How to fix? for Debian:11 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