vulnerability
Oracle Linux: CVE-2021-4189: ELSA-2022-1821: python27:2.7 security update (MODERATE) (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:P/I:N/A:N) | Dec 21, 2021 | May 18, 2022 | Dec 3, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
Dec 21, 2021
Added
May 18, 2022
Modified
Dec 3, 2025
Description
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.
Solutions
oracle-linux-upgrade-babeloracle-linux-upgrade-platform-pythonoracle-linux-upgrade-platform-python-debugoracle-linux-upgrade-platform-python-develoracle-linux-upgrade-python2oracle-linux-upgrade-python2-attrsoracle-linux-upgrade-python2-babeloracle-linux-upgrade-python2-backportsoracle-linux-upgrade-python2-backports-ssl-match-hostnameoracle-linux-upgrade-python2-bsonoracle-linux-upgrade-python2-chardetoracle-linux-upgrade-python2-coverageoracle-linux-upgrade-python2-cythonoracle-linux-upgrade-python2-debugoracle-linux-upgrade-python2-develoracle-linux-upgrade-python2-dnsoracle-linux-upgrade-python2-docsoracle-linux-upgrade-python2-docs-infooracle-linux-upgrade-python2-docutilsoracle-linux-upgrade-python2-funcsigsoracle-linux-upgrade-python2-idnaoracle-linux-upgrade-python2-ipaddressoracle-linux-upgrade-python2-jinja2oracle-linux-upgrade-python2-libsoracle-linux-upgrade-python2-lxmloracle-linux-upgrade-python2-markupsafeoracle-linux-upgrade-python2-mockoracle-linux-upgrade-python2-noseoracle-linux-upgrade-python2-numpyoracle-linux-upgrade-python2-numpy-docoracle-linux-upgrade-python2-numpy-f2pyoracle-linux-upgrade-python2-piporacle-linux-upgrade-python2-pip-wheeloracle-linux-upgrade-python2-pluggyoracle-linux-upgrade-python2-psycopg2oracle-linux-upgrade-python2-psycopg2-debugoracle-linux-upgrade-python2-psycopg2-testsoracle-linux-upgrade-python2-pyoracle-linux-upgrade-python2-pygmentsoracle-linux-upgrade-python2-pymongooracle-linux-upgrade-python2-pymongo-gridfsoracle-linux-upgrade-python2-pymysqloracle-linux-upgrade-python2-pysocksoracle-linux-upgrade-python2-pytestoracle-linux-upgrade-python2-pytest-mockoracle-linux-upgrade-python2-pytzoracle-linux-upgrade-python2-pyyamloracle-linux-upgrade-python2-requestsoracle-linux-upgrade-python2-rpm-macrosoracle-linux-upgrade-python2-scipyoracle-linux-upgrade-python2-setuptoolsoracle-linux-upgrade-python2-setuptools-scmoracle-linux-upgrade-python2-setuptools-wheeloracle-linux-upgrade-python2-sixoracle-linux-upgrade-python2-sqlalchemyoracle-linux-upgrade-python2-testoracle-linux-upgrade-python2-tkinteroracle-linux-upgrade-python2-toolsoracle-linux-upgrade-python2-urllib3oracle-linux-upgrade-python2-virtualenvoracle-linux-upgrade-python2-wheeloracle-linux-upgrade-python2-wheel-wheeloracle-linux-upgrade-python3-idleoracle-linux-upgrade-python3-libsoracle-linux-upgrade-python3-testoracle-linux-upgrade-python3-tkinteroracle-linux-upgrade-python-nose-docsoracle-linux-upgrade-python-psycopg2-docoracle-linux-upgrade-python-sqlalchemy-doc
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