ELA-1287-1 python-tornado security update

multiple vulnerabilities

2025-01-11
Packagepython-tornado
Version4.4.3-1+deb9u1 (stretch), 5.1.1-4+deb10u1 (buster)
Related CVEs CVE-2023-28370 CVE-2024-52804


Multiple vulnerabilities were discovered in python-tornado, a scalable, non-blocking Python web framework and asynchronous networking library.

CVE-2023-28370

An open redirect vulnerability in Tornado versions 6.3.1 and earlier allows
a remote unauthenticated attacker to redirect a user to an arbitrary web
site and conduct a phishing attack by having the user access a specially
crafted URL.

CVE-2024-52804

The algorithm used for parsing HTTP cookies in Tornado versions prior to
6.4.2 sometimes has quadratic complexity, leading to excessive CPU
consumption when parsing maliciously-crafted cookie headers. This
parsing occurs in the event loop thread and may block the processing of
other requests.


For Debian 10 buster, these problems have been fixed in version 5.1.1-4+deb10u1.

For Debian 9 stretch, these problems have been fixed in version 4.4.3-1+deb9u1.

We recommend that you upgrade your python-tornado packages.

Further information about Extended LTS security advisories can be found in the dedicated section of our website.