5.3
Medium
CVE-2021-4189 A flaw was found in Python, specifically in the FTP (File Transfer Protocol) client library in PASV (passive) mode
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Python | Versions not published | |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.0 → < 3.1.5 | 3.1.5 |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 | 3.1.0 → < 3.1.5 | 3.1.5 |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.0 → < 3.1.5 | 3.1.5 |
References
- bugs.python.org bugs.python.org
- python-security.readthedocs.io python-security.readthedocs.io
- github.com github.com
- security-tracker.debian.org security-tracker.debian.org
- bugzilla.redhat.com bugzilla.redhat.com
- access.redhat.com access.redhat.com
- security.netapp.com security.netapp.com
- [debian-lts-announce] 20230524 [SECURITY] [DLA 3432-1] python2.7 security update lists.debian.org
- [debian-lts-announce] 20230630 [SECURITY] [DLA 3477-1] python3.7 security update lists.debian.org
Timeline
- Published
- Last modified