Python 2.7 < 2.7.9, 3.2.x < 3.3.7, 3.4.x < 3.4.3 DoS Vulnerability (bpo-16043) - Linux

# SPDX-FileCopyrightText: 2021 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("1.3.6.1.4.1.25623.1.0.112997");
  script_version("2023-07-05T05:06:18+0000");
  script_tag(name:"last_modification", value:"2023-07-05 05:06:18 +0000 (Wed, 05 Jul 2023)");
  script_tag(name:"creation_date", value:"2021-11-02 10:32:11 +0000 (Tue, 02 Nov 2021)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-10-21 17:44:00 +0000 (Wed, 21 Oct 2020)");

  script_cve_id("CVE-2013-1753");

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

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

  script_name("Python 2.7 < 2.7.9, 3.2.x < 3.3.7, 3.4.x < 3.4.3 DoS Vulnerability (bpo-16043) - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("Denial of Service");
  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 denial of service (DoS) vulnerability.");

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

  script_tag(name:"insight", value:"The gzip_decode function in the xmlrpc client library in Python
  allows remote attackers to cause a denial of service (memory consumption) via a crafted HTTP
  request.");

  script_tag(name:"affected", value:"Python 2.7 before 2.7.9, 3.2 before 3.3.7 and 3.4 before 3.4.3.");

  script_tag(name:"solution", value:"The vendor has released updates. Please see the references for
  more information.");

  script_xref(name:"URL", value:"https://python-security.readthedocs.io/vuln/xmlrpc-gzip-unlimited-read.html");
  script_xref(name:"Advisory-ID", value:"bpo-16043");

  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_in_range( version:version, test_version:"2.7", test_version2:"2.7.8" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"2.7.9", install_path:location );
  security_message( port:port, data:report );
  exit( 0 );
}

if( version_in_range( version:version, test_version:"3.2", test_version2:"3.3.6" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"3.3.7", install_path:location );
  security_message( port:port, data:report );
  exit( 0 );
}

if( version_in_range( version:version, test_version:"3.4", test_version2:"3.4.2" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"3.4.3", install_path:location );
  security_message( port:port, data:report );
  exit( 0 );
}


exit( 99 );