Python SSRF Vulnerability (Nov 2024) - Linux

# SPDX-FileCopyrightText: 2024 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

CPE = "cpe:/a:python:python";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.170965");
  script_version("2024-12-13T15:40:54+0000");
  script_tag(name:"last_modification", value:"2024-12-13 15:40:54 +0000 (Fri, 13 Dec 2024)");
  script_tag(name:"creation_date", value:"2024-11-20 10:01:27 +0000 (Wed, 20 Nov 2024)");
  script_tag(name:"cvss_base", value:"2.6");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:N/C:N/I:P/A:N");

  script_cve_id("CVE-2024-11168");

  script_tag(name:"qod_type", value:"remote_banner_unreliable");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("Python SSRF Vulnerability (Nov 2024) - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2024 Greenbone AG");
  script_family("General");
  script_dependencies("gb_python_consolidation.nasl", "os_detection.nasl");
  script_mandatory_keys("python/detected", "Host/runs_unixoide");

  script_tag(name:"summary", value:"Python is prone to a server-side request forgery (SSRF)
  vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"The urllib.parse.urlsplit() and urlparse() functions improperly
  validated bracketed hosts ([]), allowing hosts that weren't IPv6 or IPvFuture. This behavior was
  not conformant to RFC 3986 and potentially enabled SSRF if a URL is processed by more than one
  URL parser.");

  # nb:
  # - 3.12.0 and later seems to have already included the fix (in 3.12.0 beta 1) according to:
  #   https://github.com/python/cpython/pull/103849#issuecomment-2506925321
  # - The changelogs are referring to gh-103848 which is the Github link below, based on this the
  #   affected / fixed versions have been determined
  script_tag(name:"affected", value:"Python versions prior to 3.9.21, 3.10.x prior to 3.10.16 and
  3.11.x prior to 3.11.4.");

  script_tag(name:"solution", value:"Update to version 3.9.21, 3.10.16, 3.11.4 or later.");

  script_xref(name:"URL", value:"https://mail.python.org/archives/list/[email protected]/thread/XPWB6XVZ5G5KGEI63M4AWLIEUF5BPH4T/");
  script_xref(name:"URL", value:"https://docs.python.org/release/3.12.0/whatsnew/changelog.html#python-3-12-0-beta-1");
  script_xref(name:"URL", value:"https://docs.python.org/release/3.11.4/whatsnew/changelog.html#python-3-11-4-final");
  script_xref(name:"URL", value:"https://docs.python.org/release/3.10.16/whatsnew/changelog.html#python-3-10-16-final");
  script_xref(name:"URL", value:"https://docs.python.org/release/3.9.21/whatsnew/changelog.html#python-3-9-21-final");
  script_xref(name:"URL", value:"https://github.com/python/cpython/issues/103848");
  script_xref(name:"URL", value:"https://github.com/python/cpython/pull/103849");
  script_xref(name:"URL", value:"https://github.com/python/cpython/commit/29f348e232e82938ba2165843c448c2b291504c5");
  script_xref(name:"URL", value:"https://github.com/python/cpython/commit/b2171a2fd41416cf68afd67460578631d755a550");
  script_xref(name:"URL", value:"https://osv.dev/vulnerability/PSF-2024-13");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if (isnull(port = get_app_port(cpe: CPE)))
  exit(0);

if (!infos = get_app_version_and_location(cpe: CPE, port: port, exit_no_version: TRUE,
                                          version_regex: "^[0-9]+\.[0-9]+\.[0-9]+"))
  exit(0);

version = infos["version"];
location = infos["location"];

if (version_is_less(version: version, test_version: "3.9.21")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "3.9.21", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range_exclusive(version: version, test_version_lo: "3.10", test_version_up: "3.10.16")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "3.10.16", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range_exclusive(version: version, test_version_lo: "3.11", test_version_up: "3.11.4")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "3.11.4", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);