https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sun, 04 Oct 2026 21:35:22 +0000 https://vulnerability.circl.lu/vuln/cve-2021-4189 <p><strong>Affected:</strong> python</p> <p>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.</p> <p><strong>Affected:</strong> python</p> <p>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.</p> https://vulnerability.circl.lu/vuln/cve-2021-4189 https://vulnerability.circl.lu/vuln/usn-5342-1 <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: python3.4, Ubuntu:Pro:16.04:LTS: python2.7, Ubuntu:Pro:16.04:LTS: python3.5, Ubuntu:18.04:LTS: python2.7, Ubuntu:18.04:LTS: python3.6, Ubuntu:20.04:LTS: python3.8</p> <p>David Schwörer discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 18.04 LTS. (CVE-2021-3426)</p> <p>It was discovered that Python incorrectly handled certain FTP requests. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 LTS. (CVE-2021-4189)</p> <p>It was discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. (CVE-2022-0391)</p> <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: python3.4, Ubuntu:Pro:16.04:LTS: python2.7, Ubuntu:Pro:16.04:LTS: python3.5, Ubuntu:18.04:LTS: python2.7, Ubuntu:18.04:LTS: python3.6, Ubuntu:20.04:LTS: python3.8</p> <p>David Schwörer discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 18.04 LTS. (CVE-2021-3426)</p> <p>It was discovered that Python incorrectly handled certain FTP requests. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 LTS. (CVE-2021-4189)</p> <p>It was discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. (CVE-2022-0391)</p> https://vulnerability.circl.lu/vuln/usn-5342-1