Debian alert DLA-4188-1 (python-tornado)

From:
             
 
Daniel Leidert <dleidert@debian.org>
To:
             
 
debian-lts-announce@lists.debian.org
Subject:
             
 
[SECURITY] [DLA 4188-1] python-tornado security update
Date:
             
 
Thu, 29 May 2025 05:47:50 +0200
Message-ID:
             
 
<719e583cc9cbbf6e977b76a2c09b1352c9e890ea.camel@debian.org>
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Debian LTS Advisory DLA-4188-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                       Daniel Leidert
May 29, 2025                                  https://wiki.debian.org/LTS
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Package        : python-tornado
Version        : 6.1.0-1+deb11u2
CVE ID         : CVE-2025-47287
Debian Bug     : 1105886

Tornado is a scalable, non-blocking Python web framework and
asynchronous networking library.

CVE-2025-47287

   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.

For Debian 11 bullseye, this problem has been fixed in version
6.1.0-1+deb11u2.

We recommend that you upgrade your python-tornado packages.

For the detailed security status of python-tornado please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/python-tornado

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


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