CVE-2021-4189

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

24/08/2022

Last modified:

30/06/2023

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x

5.30

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:python:python::::::::	3.6.0 (including)	3.6.14 (excluding)
cpe:2.3:a:python:python::::::::	3.7.0 (including)	3.7.11 (excluding)
cpe:2.3:a:python:python::::::::	3.8.0 (including)	3.8.9 (excluding)
cpe:2.3:a:python:python::::::::	3.9.0 (including)	3.9.3 (excluding)
cpe:2.3:a:python:python:3.10.0:-::::::
cpe:2.3:o:debian:debian_linux:10.0:::::::*
cpe:2.3:o:debian:debian_linux:11.0:::::::*
cpe:2.3:a:redhat:software_collections:-:::::::*
cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-4189

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools