Unchecked Return Value Affecting python3-debugsource package, versions <0:3.6.8-45.el8.rocky.0


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.37% (74th percentile)

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  • Snyk IDSNYK-ROCKY8-PYTHON3DEBUGSOURCE-3200605
  • published5 Jan 2023
  • disclosed24 Aug 2022

Introduced: 24 Aug 2022

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

How to fix?

Upgrade Rocky-Linux:8 python3-debugsource to version 0:3.6.8-45.el8.rocky.0 or higher.
This issue was patched in RLSA-2022:1986.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-debugsource package and not the python3-debugsource package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux: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