CVE-2021-47865 SUSE CVE security@suse.de SUSE Security Team SUSE CVE-2021-47865 Interim 1 1 2026-03-05T05:00:24Z current 2026-03-05T05:00:24Z 2026-03-05T05:00:24Z cve-database/bin/generate-cvrf-cve.pl 2020-12-27T01:00:00Z CVE-2021-47865 ProFTPD 1.3.7a contains a denial of service vulnerability that allows attackers to overwhelm the server by creating multiple simultaneous FTP connections. Attackers can repeatedly establish connections using threading to exhaust server connection limits and block legitimate user access. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). https://www.suse.com/support/security/rating/ SUSE Security Ratings SUSE Linux Enterprise Module for Server Applications 15 SP7 SUSE Linux Enterprise Server 15 SP6-LTSS SUSE Linux Enterprise Module for Server Applications 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP6 SUSE Linux Enterprise Module for Server Applications 15 SP7 openSUSE Leap 15.6 proftpd proftpd-devel proftpd-doc proftpd-lang proftpd-ldap proftpd-mysql proftpd-pgsql proftpd-radius proftpd-sqlite proftpd as a component of SUSE Linux Enterprise Module for Server Applications 15 SP7 proftpd-devel as a component of SUSE Linux Enterprise Module for Server Applications 15 SP7 proftpd-doc as a component of SUSE Linux Enterprise Module for Server Applications 15 SP7 proftpd-lang as a component of SUSE Linux Enterprise Module for Server Applications 15 SP7 proftpd-ldap as a component of SUSE Linux Enterprise Module for Server Applications 15 SP7 proftpd-mysql as a component of SUSE Linux Enterprise Module for Server Applications 15 SP7 proftpd-pgsql as a component of SUSE Linux Enterprise Module for Server Applications 15 SP7 proftpd-radius as a component of SUSE Linux Enterprise Module for Server Applications 15 SP7 proftpd-sqlite as a component of SUSE Linux Enterprise Module for Server Applications 15 SP7 proftpd as a component of SUSE Linux Enterprise Server 15 SP6-LTSS proftpd-devel as a component of SUSE Linux Enterprise Server 15 SP6-LTSS proftpd-doc as a component of SUSE Linux Enterprise Server 15 SP6-LTSS proftpd-lang as a component of SUSE Linux Enterprise Server 15 SP6-LTSS proftpd-ldap as a component of SUSE Linux Enterprise Server 15 SP6-LTSS proftpd-mysql as a component of SUSE Linux Enterprise Server 15 SP6-LTSS proftpd-pgsql as a component of SUSE Linux Enterprise Server 15 SP6-LTSS proftpd-radius as a component of SUSE Linux Enterprise Server 15 SP6-LTSS proftpd-sqlite as a component of SUSE Linux Enterprise Server 15 SP6-LTSS proftpd as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 proftpd-devel as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 proftpd-doc as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 proftpd-lang as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 proftpd-ldap as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 proftpd-mysql as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 proftpd-pgsql as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 proftpd-radius as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 proftpd-sqlite as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 proftpd as a component of openSUSE Leap 15.6 proftpd-devel as a component of openSUSE Leap 15.6 proftpd-doc as a component of openSUSE Leap 15.6 proftpd-lang as a component of openSUSE Leap 15.6 proftpd-ldap as a component of openSUSE Leap 15.6 proftpd-mysql as a component of openSUSE Leap 15.6 proftpd-pgsql as a component of openSUSE Leap 15.6 proftpd-radius as a component of openSUSE Leap 15.6 proftpd-sqlite as a component of openSUSE Leap 15.6 ProFTPD 1.3.7a contains a denial of service vulnerability that allows attackers to overwhelm the server by creating multiple simultaneous FTP connections. Attackers can repeatedly establish connections using threading to exhaust server connection limits and block legitimate user access. CVE-2021-47865 SUSE Linux Enterprise Module for Server Applications 15 SP7:proftpd SUSE Linux Enterprise Module for Server Applications 15 SP7:proftpd-devel SUSE Linux Enterprise Module for Server Applications 15 SP7:proftpd-doc SUSE Linux Enterprise Module for Server Applications 15 SP7:proftpd-lang SUSE Linux Enterprise Module for Server Applications 15 SP7:proftpd-ldap SUSE Linux Enterprise Module for Server Applications 15 SP7:proftpd-mysql SUSE Linux Enterprise Module for Server Applications 15 SP7:proftpd-pgsql SUSE Linux Enterprise Module for Server Applications 15 SP7:proftpd-radius SUSE Linux Enterprise Module for Server Applications 15 SP7:proftpd-sqlite SUSE Linux Enterprise Server 15 SP6-LTSS:proftpd SUSE Linux Enterprise Server 15 SP6-LTSS:proftpd-devel SUSE Linux Enterprise Server 15 SP6-LTSS:proftpd-doc SUSE Linux Enterprise Server 15 SP6-LTSS:proftpd-lang SUSE Linux Enterprise Server 15 SP6-LTSS:proftpd-ldap SUSE Linux Enterprise Server 15 SP6-LTSS:proftpd-mysql SUSE Linux Enterprise Server 15 SP6-LTSS:proftpd-pgsql SUSE Linux Enterprise Server 15 SP6-LTSS:proftpd-radius SUSE Linux Enterprise Server 15 SP6-LTSS:proftpd-sqlite SUSE Linux Enterprise Server for SAP Applications 15 SP6:proftpd SUSE Linux Enterprise Server for SAP Applications 15 SP6:proftpd-devel SUSE Linux Enterprise Server for SAP Applications 15 SP6:proftpd-doc SUSE Linux Enterprise Server for SAP Applications 15 SP6:proftpd-lang SUSE Linux Enterprise Server for SAP Applications 15 SP6:proftpd-ldap SUSE Linux Enterprise Server for SAP Applications 15 SP6:proftpd-mysql SUSE Linux Enterprise Server for SAP Applications 15 SP6:proftpd-pgsql SUSE Linux Enterprise Server for SAP Applications 15 SP6:proftpd-radius SUSE Linux Enterprise Server for SAP Applications 15 SP6:proftpd-sqlite openSUSE Leap 15.6:proftpd openSUSE Leap 15.6:proftpd-devel openSUSE Leap 15.6:proftpd-doc openSUSE Leap 15.6:proftpd-lang openSUSE Leap 15.6:proftpd-ldap openSUSE Leap 15.6:proftpd-mysql openSUSE Leap 15.6:proftpd-pgsql openSUSE Leap 15.6:proftpd-radius openSUSE Leap 15.6:proftpd-sqlite important 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H