Debian dla-4461 : python-tornado-doc - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-4461. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(297501);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/01");

  script_cve_id("CVE-2025-67724", "CVE-2025-67725", "CVE-2025-67726");

  script_name(english:"Debian dla-4461 : python-tornado-doc - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4461 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4461-1                [email protected]
    https://www.debian.org/lts/security/                       Daniel Leidert
    February 01, 2026                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : python-tornado
    Version        : 6.1.0-1+deb11u3
    CVE ID         : CVE-2025-67724 CVE-2025-67725 CVE-2025-67726
    Debian Bug     : 1122660 1122661 1122663

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

    CVE-2025-67724

       Custom reason phrases can cause multiple vulnerabilities (like XSS,
       header injection, ...) due to being used unescaped in HTTP headers.

    CVE-2025-67725

       A single maliciously crafted HTTP request can cause a possible DoS
       due to quadratic performance of repeated header lines.

    CVE-2025-67726

       An inefficient algorithm when parsing parameters for HTTP header
       values can potentially cause a DoS.

    For Debian 11 bullseye, these problems have been fixed in version
    6.1.0-1+deb11u3.

    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:
    signature.asc
    Description: This is a digitally signed message part

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.");
  # https://security-tracker.debian.org/tracker/source-package/python-tornado
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dd335af5");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-67724");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-67725");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-67726");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/python-tornado");
  script_set_attribute(attribute:"solution", value:
"Upgrade the python-tornado-doc packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-67724");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/12/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-tornado-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-tornado");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);

var pkgs = [
    {'release': '11.0', 'prefix': 'python-tornado-doc', 'reference': '6.1.0-1+deb11u3'},
    {'release': '11.0', 'prefix': 'python3-tornado', 'reference': '6.1.0-1+deb11u3'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var _release = NULL;
  var prefix = NULL;
  var reference = NULL;
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (_release && prefix && reference) {
    if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'python-tornado-doc / python3-tornado');
}