The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4007 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4007-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                       Daniel Leidert     January 01, 2025                              https://wiki.debian.org/LTS
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    Package        : python-tornado     Version        : 6.1.0-1+deb11u1     CVE ID         : CVE-2023-28370 CVE-2024-52804     Debian Bug     : 1036875 1088112

    Tornado is 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 11 bullseye, these problems have been fixed in version     6.1.0-1+deb11u1.

    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     Attachment:
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Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

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Debian dla-4007 : python-tornado-doc - security update

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