Django 2.2 < 2.2.22, 3.1 < 3.1.10, 3.2 < 3.2.2 Header Injection Vulnerability - Linux

# Copyright (C) 2021 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

CPE = "cpe:/a:djangoproject:django";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.145922");
  script_version("2021-08-26T14:01:06+0000");
  script_tag(name:"last_modification", value:"2021-08-26 14:01:06 +0000 (Thu, 26 Aug 2021)");
  script_tag(name:"creation_date", value:"2021-05-07 07:00:40 +0000 (Fri, 07 May 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:"2021-06-11 11:15:00 +0000 (Fri, 11 Jun 2021)");

  script_cve_id("CVE-2021-32052");

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

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

  script_name("Django 2.2 < 2.2.22, 3.1 < 3.1.10, 3.2 < 3.2.2 Header Injection Vulnerability - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_django_detect_lin.nasl");
  script_mandatory_keys("Django/Linux/Ver");

  script_tag(name:"summary", value:"Django is prone to a header injection vulnerability.");

  script_tag(name:"insight", value:"On Python 3.9.5+, URLValidator didn't prohibit newlines and tabs.
  If you used values with newlines in HTTP response, you could suffer from header injection attacks.
  Django itself wasn't vulnerable because HttpResponse prohibits newlines in HTTP headers.

  Moreover, the URLField form field which uses URLValidator silently removes newlines and tabs on
  Python 3.9.5+, so the possibility of newlines entering your data only existed if you are using
  this validator outside of the form fields.");

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

  script_tag(name:"affected", value:"Django 2.2 before 2.2.22, 3.1 before 3.1.10, and 3.2 before 3.2.2");

  script_tag(name:"solution", value:"Update to version 2.2.22, 3.1.10, 3.2.2 or later.");

  script_xref(name:"URL", value:"https://www.djangoproject.com/weblog/2021/may/06/security-releases/");

  exit(0);
}

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

if (!infos = get_app_version_and_location(cpe: CPE, exit_no_version: TRUE))
  exit(0);

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

if (version_in_range(version: version, test_version: "2.2.0", test_version2: "2.2.21")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "2.2.22", install_path: location);
  security_message(port: 0, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "3.1.0", test_version2: "3.1.9")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "3.1.10", install_path: location);
  security_message(port: 0, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "3.2.0", test_version2: "3.2.1")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "3.2.2", install_path: location);
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);