Security update for stunnel SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2021:1465-1 Final 1 1 2021-05-03T16:19:57Z current 2021-05-03T16:19:57Z 2021-05-03T16:19:57Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for stunnel This update for stunnel fixes the following issues: - Security fix: [bsc#1177580, bsc#1182529, CVE-2021-20230] * 'redirect' option does not properly handle 'verifyChain = yes' The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2021-1465,SUSE-SLE-Product-HPC-15-2021-1465,SUSE-SLE-Product-HPC-15-SP1-ESPOS-2021-1465,SUSE-SLE-Product-HPC-15-SP1-LTSS-2021-1465,SUSE-SLE-Product-SLES-15-2021-1465,SUSE-SLE-Product-SLES-15-SP1-BCL-2021-1465,SUSE-SLE-Product-SLES-15-SP1-LTSS-2021-1465,SUSE-SLE-Product-SLES_SAP-15-2021-1465,SUSE-SLE-Product-SLES_SAP-15-SP1-2021-1465,SUSE-SLE-Product-SUSE-Manager-Proxy-4.0-2021-1465,SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.0-2021-1465,SUSE-SLE-Product-SUSE-Manager-Server-4.0-2021-1465,SUSE-Storage-6-2021-1465 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2021/suse-su-20211465-1/ Link for SUSE-SU-2021:1465-1 https://lists.suse.com/pipermail/sle-security-updates/2021-May/008719.html E-Mail link for SUSE-SU-2021:1465-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1177580 SUSE Bug 1177580 https://bugzilla.suse.com/1182529 SUSE Bug 1182529 https://www.suse.com/security/cve/CVE-2021-20230/ SUSE CVE CVE-2021-20230 page SUSE Enterprise Storage 6 SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS SUSE Linux Enterprise High Performance Computing 15-ESPOS SUSE Linux Enterprise High Performance Computing 15-LTSS SUSE Linux Enterprise Server 15 SP1-BCL SUSE Linux Enterprise Server 15 SP1-LTSS SUSE Linux Enterprise Server 15-LTSS SUSE Linux Enterprise Server for SAP Applications 15 SUSE Linux Enterprise Server for SAP Applications 15 SP1 SUSE Manager Proxy 4.0 SUSE Manager Retail Branch Server 4.0 SUSE Manager Server 4.0 stunnel-5.44-3.8.1 stunnel-doc-5.44-3.8.1 stunnel-5.44-3.8.1 as a component of SUSE Enterprise Storage 6 stunnel-5.44-3.8.1 as a component of SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS stunnel-5.44-3.8.1 as a component of SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS stunnel-5.44-3.8.1 as a component of SUSE Linux Enterprise High Performance Computing 15-ESPOS stunnel-5.44-3.8.1 as a component of SUSE Linux Enterprise High Performance Computing 15-LTSS stunnel-5.44-3.8.1 as a component of SUSE Linux Enterprise Server 15 SP1-BCL stunnel-5.44-3.8.1 as a component of SUSE Linux Enterprise Server 15 SP1-LTSS stunnel-5.44-3.8.1 as a component of SUSE Linux Enterprise Server 15-LTSS stunnel-5.44-3.8.1 as a component of SUSE Linux Enterprise Server for SAP Applications 15 stunnel-5.44-3.8.1 as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP1 stunnel-5.44-3.8.1 as a component of SUSE Manager Proxy 4.0 stunnel-5.44-3.8.1 as a component of SUSE Manager Retail Branch Server 4.0 stunnel-5.44-3.8.1 as a component of SUSE Manager Server 4.0 A flaw was found in stunnel before 5.57, where it improperly validates client certificates when it is configured to use both redirect and verifyChain options. This flaw allows an attacker with a certificate signed by a Certificate Authority, which is not the one accepted by the stunnel server, to access the tunneled service instead of being redirected to the address specified in the redirect option. The highest threat from this vulnerability is to confidentiality. CVE-2021-20230 SUSE Enterprise Storage 6:stunnel-5.44-3.8.1 SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS:stunnel-5.44-3.8.1 SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS:stunnel-5.44-3.8.1 SUSE Linux Enterprise High Performance Computing 15-ESPOS:stunnel-5.44-3.8.1 SUSE Linux Enterprise High Performance Computing 15-LTSS:stunnel-5.44-3.8.1 SUSE Linux Enterprise Server 15 SP1-BCL:stunnel-5.44-3.8.1 SUSE Linux Enterprise Server 15 SP1-LTSS:stunnel-5.44-3.8.1 SUSE Linux Enterprise Server 15-LTSS:stunnel-5.44-3.8.1 SUSE Linux Enterprise Server for SAP Applications 15 SP1:stunnel-5.44-3.8.1 SUSE Linux Enterprise Server for SAP Applications 15:stunnel-5.44-3.8.1 SUSE Manager Proxy 4.0:stunnel-5.44-3.8.1 SUSE Manager Retail Branch Server 4.0:stunnel-5.44-3.8.1 SUSE Manager Server 4.0:stunnel-5.44-3.8.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2021/suse-su-20211465-1/ https://www.suse.com/security/cve/CVE-2021-20230.html CVE-2021-20230 https://bugzilla.suse.com/1177580 SUSE Bug 1177580 https://bugzilla.suse.com/1182529 SUSE Bug 1182529