Sympa < 6.2.56 Privilege Escalation Vulnerability

# Copyright (C) 2020 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("1.3.6.1.4.1.25623.1.0.113779");
  script_version("2021-07-08T11:00:45+0000");
  script_tag(name:"last_modification", value:"2021-07-08 11:00:45 +0000 (Thu, 08 Jul 2021)");
  script_tag(name:"creation_date", value:"2020-11-12 16:12:13 +0000 (Thu, 12 Nov 2020)");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/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:"2020-12-24 12:15:00 +0000 (Thu, 24 Dec 2020)");

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

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

  script_cve_id("CVE-2020-10936");

  script_name("Sympa < 6.2.56 Privilege Escalation Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("Privilege escalation");
  script_dependencies("sympa_detect.nasl");
  script_mandatory_keys("sympa/detected");

  script_tag(name:"summary", value:"Sympa is prone to a privilege escalation vulnerability.");

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

  script_tag(name:"insight", value:"The vulnerability is exploitable via a malicious perl module.");

  script_tag(name:"impact", value:"Successful exploitation would allow an attacker to gain complete
  control over the target system.");

  script_tag(name:"affected", value:"Sympa through version 6.2.55.");

  script_tag(name:"solution", value:"Update to version 6.2.56 or later.");

  script_xref(name:"URL", value:"https://sysdream.com/news/lab/2020-05-25-cve-2020-10936-sympa-privileges-escalation-to-root/");
  script_xref(name:"URL", value:"https://sympa-community.github.io/security/2020-002.html");

  exit(0);
}

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

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

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

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

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

if( version_is_less( version: version, test_version: "6.2.56" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "6.2.56", install_path: location );
  security_message( data: report, port: port );
  exit( 0 );
}

exit( 99 );