Tuleap < 9.7 Object Injection Vulnerability

# Copyright (C) 2017 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.

if( description )
{
  script_oid("1.3.6.1.4.1.25623.1.0.113039");
  script_version("2021-10-19T05:42:00+0000");
  script_tag(name:"last_modification", value:"2021-10-19 05:42:00 +0000 (Tue, 19 Oct 2021)");
  script_tag(name:"creation_date", value:"2017-10-24 11:04:55 +0200 (Tue, 24 Oct 2017)");
  script_tag(name:"cvss_base", value:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2017-12-27 17:08:00 +0000 (Wed, 27 Dec 2017)");

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

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

  script_cve_id("CVE-2017-7411");

  script_name("Tuleap < 9.7 Object Injection Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_tuleap_http_detect.nasl");
  script_mandatory_keys("tuleap/detected");

  script_tag(name:"summary", value:"Tuleap is prone to an object injection vulnerability.");

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

  script_tag(name:"insight", value:"The vulnerability exists because this method is using the
  unserialize() function with a value that can be arbitrarily manipulated by a user through the REST
  API interface. This can be exploited to inject arbitrary PHP objects into the application scope,
  and could allow authenticated attackers to execute arbitrary PHP code via specially crafted
  serialized objects. Successful exploitation of this vulnerability requires an user account with
  permissions to create or access artifacts in a tracker.");

  script_tag(name:"impact", value:"Successful exploitation would allow the attacker to execute
  arbitrary code on the host.");

  script_tag(name:"affected", value:"Tuleap version 5.0 through 9.6.");

  script_tag(name:"solution", value:"Update to version 9.7 or later.");

  script_xref(name:"URL", value:"http://karmainsecurity.com/KIS-2017-02");
  script_xref(name:"URL", value:"http://www.openwall.com/lists/oss-security/2017/10/23/3");

  exit(0);
}

CPE = "cpe:/a:enalean:tuleap";

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

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

if( ! version = get_app_version( cpe: CPE, port: port ) )
  exit( 0 );

# version_in_range is not possible here since the highest patch-level (e.g 9.6.99.[0-9]+) is unknown
# test_version2: 9.6 would result in 9.6.10.1 (random example) to be classified as "fixed", which it is not
if( version_is_greater_equal( version: version, test_version: "5.0" ) &&
    version_is_less( version: version, test_version: "9.7" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "9.7" );
  security_message( port: port, data: report );
  exit( 0 );
}

exit( 99 );