An update for python-tornado is now available for openEuler-22.03-LTS-SP4 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2025-1615 Final 1.0 1.0 2025-06-06 Initial 2025-06-06 2025-06-06 openEuler SA Tool V1.0 2025-06-06 python-tornado security update An update for python-tornado is now available for openEuler-22.03-LTS-SP4 Tornado is an open source version of the scalable, non-blocking web server and tools. Security Fix(es): 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) An update for python-tornado is now available for master/openEuler-20.03-LTS-SP4/openEuler-22.03-LTS-SP3/openEuler-22.03-LTS-SP4/openEuler-24.03-LTS/openEuler-24.03-LTS-Next/openEuler-24.03-LTS-SP1/openEuler-24.03-LTS-SP2. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High python-tornado https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1615 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2025-47287 https://nvd.nist.gov/vuln/detail/CVE-2025-47287 openEuler-22.03-LTS-SP4 python-tornado-6.1-4.oe2203sp4.src.rpm python-tornado-debuginfo-6.1-4.oe2203sp4.aarch64.rpm python-tornado-debugsource-6.1-4.oe2203sp4.aarch64.rpm python-tornado-help-6.1-4.oe2203sp4.aarch64.rpm python3-tornado-6.1-4.oe2203sp4.aarch64.rpm python-tornado-debuginfo-6.1-4.oe2203sp4.x86_64.rpm python-tornado-debugsource-6.1-4.oe2203sp4.x86_64.rpm python-tornado-help-6.1-4.oe2203sp4.x86_64.rpm python3-tornado-6.1-4.oe2203sp4.x86_64.rpm 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. 2025-06-06 CVE-2025-47287 openEuler-22.03-LTS-SP4 High 7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H python-tornado security update 2025-06-06 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1615