Ubiquiti UniFi OS < 5.1.12 Multiple Vulnerabilities

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

include('compat.inc');

if (description)
{
  script_id(324968);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/06");

  script_cve_id("CVE-2026-34908", "CVE-2026-34909", "CVE-2026-34910");
  script_xref(name:"IAVA", value:"2026-A-0632");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2026/06/26");

  script_name(english:"Ubiquiti UniFi OS < 5.1.12 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"A device on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the remote Ubiquiti UniFi OS device is
prior to 5.1.12. It is, therefore, affected by multiple vulnerabilities:

  - A malicious actor with access to the network could exploit an
    Improper Access Control vulnerability found in UniFi OS devices to
    make unauthorized changes to the system. (CVE-2026-34908)

  - A malicious actor with access to the network could exploit a Path
    Traversal vulnerability found in UniFi OS devices to access files
    on the underlying system that could be manipulated to access an
    underlying account. (CVE-2026-34909)

  - A malicious actor with access to the network could exploit an
    Improper Input Validation vulnerability found in UniFi OS devices
    to execute a Command Injection. (CVE-2026-34910)

Note that Nessus has not tested for these issues but has instead relied only on
the application's self-reported version number.");
  # https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7c0eaa8b");
  script_set_attribute(attribute:"solution", value:
"Upgrade Ubiquiti UniFi OS to version 5.1.12 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-34908");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-34910");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/05/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/03");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:ubnt:unifi");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/UBNT_UniFi/Version");

  exit(0);
}

include('vcf.inc');

get_kb_item_or_exit("Host/UBNT_UniFi/Version");

var app_info = vcf::get_app_info(app:"UBNT UniFi", kb_ver:"Host/UBNT_UniFi/Version", port:22);

var constraints = [
  {'fixed_version' : '5.1.12'}
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);