Flexera InstallShield < 2024 R1 Privilege Escalation (CVE-2024-7562)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(305768);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/13");

  script_cve_id("CVE-2024-7562");
  script_xref(name:"IAVB", value:"2026-B-0086");

  script_name(english:"Flexera InstallShield < 2024 R1 Privilege Escalation (CVE-2024-7562)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by a privilege escalation vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Flexera InstallShield installed on the remote host is prior to 2024 R1. It is, therefore, affected by
a privilege escalation vulnerability:

  - A privilege escalation vulnerability exists in standalone MSI setups built with InstallShield that have multiple
    InstallScript custom actions configured. A local attacker can exploit this to gain elevated privileges.
    (CVE-2024-7562)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://community.revenera.com/s/article/cve-2024-7562-privilege-escalation-vulnerability-in-created-msi-packages
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?45510832");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Flexera InstallShield version 2024 R1 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-7562");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/06/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/06/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:flexerasoftware:installshield");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("flexera_installshield_installed.nbin");
  script_require_keys("installed_sw/Flexera InstallShield");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [
    {'scope': 'target', 'match': {'os': 'windows'}}
  ],
  'checks': [
    {
      'product': {'name': 'Flexera InstallShield', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '30.0', 'fixed_display': '2024 R1'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_WARNING);
vdf::handle_check_and_report_errors(vdf_result:result);