Python 2.x < 2.7.18, 3.x < 3.5.10, 3.6.x < 3.6.11, 3.7.x < 3.7.8, 3.8.x < 3.8.3 CRLF Injection Vulnerability (bpo-38576) - 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("1.3.6.1.4.1.25623.1.0.118196");
  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:"2021-09-11 10:50:32 +0200 (Sat, 11 Sep 2021)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-11-16 20:46:00 +0000 (Mon, 16 Nov 2020)");

  script_cve_id("CVE-2019-18348");

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

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

  script_name("Python 2.x < 2.7.18, 3.x < 3.5.10, 3.6.x < 3.6.11, 3.7.x < 3.7.8, 3.8.x < 3.8.3 CRLF Injection Vulnerability (bpo-38576) - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 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 CRLF injection vulnerability.");

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

  script_tag(name:"insight", value:"http.client allows to pass control characters like CRLF newlines
  which can be abused to inject HTTP headers.");

  script_tag(name:"affected", value:"Python 2.x prior to version 2.7.18, versions 3.x prior to 3.5.10,
  3.6.x prior to 3.6.11, 3.7.x prior to 3.7.8 and 3.8.x prior to 3.8.3.");

  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/urlopen-host-http-header-injection.html");
  script_xref(name:"Advisory-ID", value:"bpo-38576");

  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:"2.0", test_version2:"2.7.17" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"2.7.18", install_path:location );
  security_message( port:port, data:report );
  exit( 0 );
}

if( version_in_range( version:version, test_version:"3.0", test_version2:"3.5.9" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"3.5.10", install_path:location );
  security_message( port:port, data:report );
  exit( 0 );
}

if( version_in_range( version:version, test_version:"3.6.0", test_version2:"3.6.10" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"3.6.11", install_path:location );
  security_message( port:port, data:report );
  exit( 0 );
}

if( version_in_range( version:version, test_version:"3.7.0", test_version2:"3.7.7" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"3.7.8", install_path:location );
  security_message( port:port, data:report );
  exit( 0 );
}

if( version_in_range( version:version, test_version:"3.8.0", test_version2:"3.8.2" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"3.8.3", install_path:location );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );