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.
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References
History
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MITRE
Status: PUBLISHED
Assigner: redhat
Published: 2022-08-24T00:00:00
Updated: 2024-08-03T17:16:04.264Z
Reserved: 2021-12-29T00:00:00
Link: CVE-2021-4189
Vulnrichment
No data.
NVD
Status : Modified
Published: 2022-08-24T16:15:09.827
Modified: 2024-11-21T06:37:06.437
Link: CVE-2021-4189
Redhat