Icinga 2 < 2.12.0-rc1 Privilege Escalation Vulnerability

# SPDX-FileCopyrightText: 2020 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:icinga:icinga2";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.113702");
  script_version("2024-11-15T05:05:36+0000");
  script_tag(name:"last_modification", value:"2024-11-15 05:05:36 +0000 (Fri, 15 Nov 2024)");
  script_tag(name:"creation_date", value:"2020-06-15 07:30:28 +0000 (Mon, 15 Jun 2020)");
  script_tag(name:"cvss_base", value:"4.6");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:P/I:P/A:P");
  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:"2020-11-03 07:15:00 +0000 (Tue, 03 Nov 2020)");

  script_cve_id("CVE-2020-14004");

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

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

  script_name("Icinga 2 < 2.12.0-rc1 Privilege Escalation Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2020 Greenbone AG");
  script_family("Privilege escalation");
  script_dependencies("gb_icinga2_http_detect.nasl");
  script_mandatory_keys("icinga2/detected");

  script_tag(name:"summary", value:"Icinga 2 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:"If /run/icinga2/cmd is a symlink, then it will be followed and
  arbitrary files can be changed to mode 2750 by the unprivileged icinga2 user.");

  script_tag(name:"impact", value:"Successful exploitation would allow an attacker to read
  sensitive information or gain elevated privileges.");

  script_tag(name:"affected", value:"Icinga 2 version 2.11.3 and prior.");

  script_tag(name:"solution", value:"Update to version 2.12.0-rc1 or later.");

  script_xref(name:"URL", value:"https://www.openwall.com/lists/oss-security/2020/06/12/1");

  exit(0);
}

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: "2.12.0" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "2.12.0", install_path: location );
  security_message( data: report, port: port );
  exit( 0 );
}

exit( 99 );