Bug 2366703 (CVE-2025-47287)

Summary: CVE-2025-47287 tornado: Tornado Multipart Form-Data Denial of Service
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: bbrownin, caswilli, dhanak, dsimansk, kaycoth, kingland, kverlaen, matzew, mnovotny, sausingh, skontopo
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Tornado. This vulnerability can lead to a a denial of service by generating an extremely high volume of log entries.
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Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2366780, 2366781, 2366782, 2366783, 2366784, 2366785, 2366786    
Bug Blocks:    

Description OSIDB Bzimport 2025-05-15 22:01:12 UTC
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.

Comment 3 errata-xmlrpc 2025-05-26 09:40:58 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:8135 https://access.redhat.com/errata/RHSA-2025:8135

Comment 4 errata-xmlrpc 2025-05-26 10:05:59 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:8136 https://access.redhat.com/errata/RHSA-2025:8136

Comment 5 errata-xmlrpc 2025-05-27 16:50:13 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2025:8223 https://access.redhat.com/errata/RHSA-2025:8223

Comment 6 errata-xmlrpc 2025-05-27 17:46:37 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2025:8226 https://access.redhat.com/errata/RHSA-2025:8226

Comment 7 errata-xmlrpc 2025-05-28 10:41:13 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:8254 https://access.redhat.com/errata/RHSA-2025:8254

Comment 8 errata-xmlrpc 2025-05-28 23:35:43 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Extended Update Support

Via RHSA-2025:8279 https://access.redhat.com/errata/RHSA-2025:8279

Comment 9 errata-xmlrpc 2025-05-29 06:26:42 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2025:8290 https://access.redhat.com/errata/RHSA-2025:8290

Comment 10 errata-xmlrpc 2025-05-29 06:26:51 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:8291 https://access.redhat.com/errata/RHSA-2025:8291

Comment 11 errata-xmlrpc 2025-05-29 16:40:34 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Telecommunications Update Service
  Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions

Via RHSA-2025:8323 https://access.redhat.com/errata/RHSA-2025:8323

Comment 12 errata-xmlrpc 2025-06-09 10:14:31 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2025:8664 https://access.redhat.com/errata/RHSA-2025:8664