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Unchecked Return Value The advisory has been revoked - it doesn't affect any version of package python36  (opens in a new tab)

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EPSS
0.2% (58th percentile)

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  • Snyk IDSNYK-CENTOS8-PYTHON36-2327770
  • published30 Dec 2021
  • disclosed21 Dec 2021
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Introduced: 21 Dec 2021

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

Amendment

The Centos security team deemed this advisory irrelevant for Centos:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python36 package and not the python36 package as distributed by Centos.

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.