CVE-2021-4189
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- CVE-2021-4189
CVE Details
| Release Date: | 2022-08-24 | |
| Impact: | None | What is this? |
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.
See more information about CVE-2021-4189 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 5.3 |
| Vector String: | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| Version: | 3.0 |
| Attack Vector: | Network |
| Attack Complexity: | Low |
| Privileges Required: | None |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality Impact: | Low |
| Integrity Impact: | None |
| Availability Impact: | None |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 8 (Cython) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (PyYAML) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (babel) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (numpy) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (pytest) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-PyMySQL) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-attrs) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-backports) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-backports-ssl_match_hostname) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-chardet) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-coverage) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-dns) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-docs) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-docutils) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-funcsigs) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-idna) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-ipaddress) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-jinja2) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-lxml) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-markupsafe) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-mock) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-nose) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-pluggy) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-psycopg2) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-py) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-pygments) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-pymongo) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-pysocks) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-pytest-mock) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-requests) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-setuptools_scm) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-sqlalchemy) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-urllib3) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-virtualenv) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python-wheel) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python2) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python2-pip) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python2-rpm-macros) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python2-setuptools) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python2-six) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (python3) | ELSA-2022-1986 | 2022-05-17 |
| Oracle Linux version 8 (pytz) | ELSA-2022-1821 | 2022-05-17 |
| Oracle Linux version 8 (scipy) | ELSA-2022-1821 | 2022-05-17 |
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