Security update for python-tornado6 SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:01649-2 Final 1 1 2025-05-23T11:58:50Z current 2025-05-23T11:58:50Z 2025-05-23T11:58:50Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for python-tornado6 This update for python-tornado6 fixes the following issues: - CVE-2025-47287: excessive logging when parsing malformed `multipart/form-data` can lead to a denial-of-service (bsc#1243268). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-1649,SUSE-SLE-Module-Python3-15-SP7-2025-1649 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2025/suse-su-202501649-2/ Link for SUSE-SU-2025:01649-2 https://lists.suse.com/pipermail/sle-updates/2025-May/039334.html E-Mail link for SUSE-SU-2025:01649-2 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1243268 SUSE Bug 1243268 https://www.suse.com/security/cve/CVE-2025-47287/ SUSE CVE CVE-2025-47287 page SUSE Linux Enterprise Module for Python 3 15 SP7 python311-tornado6-6.3.2-150400.9.9.1 python311-tornado6-6.3.2-150400.9.9.1 as a component of SUSE Linux Enterprise Module for Python 3 15 SP7 Tornado is a Python web framework and asynchronous networking library. When Tornado's ``multipart/form-data`` parser encounters certain errors, it logs a warning but continues trying to parse the remainder of the data. This allows remote attackers to generate an extremely high volume of logs, constituting a DoS attack. This DoS is compounded by the fact that the logging subsystem is synchronous. All versions of Tornado prior to 6.5.0 are affected. The vulnerable parser is enabled by default. Upgrade to Tornado version 6.50 to receive a patch. As a workaround, risk can be mitigated by blocking `Content-Type: multipart/form-data` in a proxy. CVE-2025-47287 SUSE Linux Enterprise Module for Python 3 15 SP7:python311-tornado6-6.3.2-150400.9.9.1 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/2025/suse-su-202501649-2/ https://www.suse.com/security/cve/CVE-2025-47287.html CVE-2025-47287 https://bugzilla.suse.com/1243268 SUSE Bug 1243268