aiohttp < 3.14.3 Out-of-bounds Read DoS

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

include('compat.inc');

if (description)
{
  script_id(333343);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/07");

  script_cve_id("CVE-2026-69244");
  script_xref(name:"IAVA", value:"2026-A-0818");

  script_name(english:"aiohttp < 3.14.3 Out-of-bounds Read 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 version of aiohttp installed on the remote host is prior to 3.14.3. It is, therefore, affected by a
denial of service vulnerability:

  - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.3, an out-of-bounds
    heap read could occur in the C response parser while building an error message for a malformed response. An attacker
    controlled server, or possibly an accidental response, could trigger a DoS in the client. The vulnerable path was
    error message construction in aiohttp/_http_parser.pyx, where an llhttp error-position pointer was used to build a
    snippet for malformed chunked responses and malformed request or response bytes at the buffer end. This issue is
    fixed in version 3.14.3. (CVE-2026-69244)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://github.com/aio-libs/aiohttp/security/advisories/GHSA-cq5v-8q36-5273
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d8cf3185");
  script_set_attribute(attribute:"solution", value:
"Upgrade to aiohttp version 3.14.3 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:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-69244");

  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"vuln_publication_date", value:"2026/08/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"asset_categories", value:"component");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:aiohttp:aiohttp");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

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

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

  script_dependencies("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 = 'aiohttp';
var cpe = 'cpe:/a:aiohttp:aiohttp';

var libs = python::get_package_info(pkg_name:pkg, cpe:cpe);

if (empty_or_null(libs))
  audit(AUDIT_NOT_INST, pkg);

vcf::check_all_backporting(app_info:libs);

var constraints = [
  { 'fixed_version' : '3.14.3' }
];

vcf::check_version_and_report(app_info:libs, constraints:constraints, severity:SECURITY_WARNING);