CVE-2021-4189
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 5.3epss 2.7%
probabilidad de explotación
2.7%top 16% de las CVE
explotación observada
noninguna fuente lo reporta
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Productos afectados
n/a · pythonReferencias
https://access.redhat.com/security/cve/CVE-2021-4189https://bugs.python.org/issue43285https://bugzilla.redhat.com/show_bug.cgi?id=2036020https://github.com/python/cpython/commit/0ab152c6b5d95caa2dc1a30fa96e10258b5f188ehttps://lists.debian.org/debian-lts-announce/2023/05/msg00024.htmlhttps://lists.debian.org/debian-lts-announce/2023/06/msg00039.htmlhttps://lists.debian.org/debian-lts-announce/2024/12/msg00000.htmlhttps://python-security.readthedocs.io/vuln/ftplib-pasv.htmlhttps://security.netapp.com/advisory/ntap-20221104-0004/https://security-tracker.debian.org/tracker/CVE-2021-4189