Microsoft Azure Monitor Agent < 1.36.3 Elevation of Privilege (CVE-2025-59285)

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

include('compat.inc');

if (description)
{
  script_id(270380);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/17");

  script_cve_id("CVE-2025-59285");
  script_xref(name:"IAVA", value:"2025-A-0761");

  script_name(english:"Microsoft Azure Monitor Agent < 1.36.3 Elevation of Privilege (CVE-2025-59285)");

  script_set_attribute(attribute:"synopsis", value:
"A data collection agent on the remote Windows host is affected by a elevation of privilege vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Microsoft Azure Monitor Agent installed on the remote host is prior to 1.36.3. It is, therefore,
affected by a elevation of privilege vulnerability. Deserialization of untrusted data in Azure Monitor Agent allows an
authorized attacker to elevate privileges locally.
  
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59285");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Microsoft Azure Monitor Agent version 1.36.3 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:S/C:C/I:C/A: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_attribute(attribute:"cvss_score_source", value:"CVE-2025-59285");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/10/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/10/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/10/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:azure_monitor_agent");
  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) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_azure_monitor_agent_win_installed.nbin");
  script_require_keys("installed_sw/Microsoft Azure Monitor Agent", "SMB/Registry/Enumerated");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [
    {'scope': 'target', 'match': {'os': 'windows'}}
  ],
  'checks': [
    {
      'product': {'name': 'Microsoft Azure Monitor Agent', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '1.36.3'}
      ]
    }
  ]
};

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