Python Library Brotli <= 1.1.0 DoS

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(274433);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/18");

  script_cve_id("CVE-2025-6176");
  script_xref(name:"IAVA", value:"2025-A-0813");

  script_name(english:"Python Library Brotli <= 1.1.0 DoS");

  script_set_attribute(attribute:"synopsis", value:
"A Python library installed on the remote host is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"The detected version of the Brotli Python package, Brotli, is prior or equal to 1.1.0. It is,
therefore, affected by a denial of service (DoS) vulnerability due to decompression.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://github.com/advisories/GHSA-2qfp-q593-8484");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Brotli version 1.2.0 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-6176");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/10/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/10/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"asset_categories", value:"component");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:python:brotli");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("os_fingerprint.nasl", "python_packages_installed_nix.nbin", "python_packages_win_installed.nbin");
 script_require_ports("Host/nix/Python/Packages/Enumerated", "Host/win/Python/Packages/Enumerated");

  exit(0);
}

include('python.inc');

var pkg = 'Brotli';
var lib_info = python::get_package_info(pkg_name:pkg, search:'brotli');

if (tolower(lib_info.app) != 'brotli')
    audit(AUDIT_NOT_INST, pkg);

vcf::check_all_backporting(app_info:lib_info);

var constraints = [
  { 'max_version' : '1.1.0' , 'fixed_display' : '1.2.0' }
];

vcf::check_version_and_report(app_info:lib_info, constraints:constraints, severity:SECURITY_HOLE);