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CVE search · CVE-2021-4189

CVE-2021-4189

medium 5.3

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.

Open in the NVD CVE.org JSON

Details

Status
Modified
Published
Last changed
Source
secalert@redhat.com
Weakness
CWE-252

Severity

VersionScoreVectorSource
CVSS 3.1 medium 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N nvd@nist.govPrimary
CVSS 3.1 medium 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N 134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary

Affected products

Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.

  • python · python
  • debian · debian_linux
  • redhat · software_collections
  • redhat · enterprise_linux
  • netapp · ontap_select_deploy_administration_utility

References