CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
Low
EPSS
Percentile
5.1%
Firmware version of the Zyxel USG or VPN device is less than 5.37. This means the Zyxel device is vulnerable to the following privilege management vulnerability:
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(186482);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/04");
script_cve_id("CVE-2023-5960");
script_xref(name:"IAVA", value:"2023-A-0655");
script_name(english:"Zyxel USG / VPN < 5.37 Privilege Management");
script_set_attribute(attribute:"synopsis", value:
"The remote security gateway is affected by a privilege management vulnerability.");
script_set_attribute(attribute:"description", value:
"Firmware version of the Zyxel USG or VPN device is less than 5.37. This means the Zyxel device is vulnerable to the
following privilege management vulnerability:
- An improper privilege management vulnerability in the hotspot feature could allow an authenticated local attacker
to access the system files on an affected device. (CVE-2023-5960)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
# https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d9098644");
script_set_attribute(attribute:"solution", value:
"Upgrade to Zyxel USG / ATP / VPN to 5.37 or later.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:N/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-5960");
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:"2023/11/28");
script_set_attribute(attribute:"patch_publication_date", value:"2023/11/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/30");
script_set_attribute(attribute:"plugin_type", value:"combined");
script_set_attribute(attribute:"cpe", value:"cpe:/h:zyxel:usg_flex");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Firewalls");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("zyxel_usg_web_detect.nbin", "zyxel_usg_detect.nbin");
script_require_keys("installed_sw/Zyxel Unified Security Gateway (USG)");
script_require_ports("Services/www", 80, 443);
exit(0);
}
include('vcf.inc');
var app = 'Zyxel Unified Security Gateway (USG)';
var app_info = vcf::combined_get_app_info(app:app);
var model = app_info['Model'];
var constraints = [];
if(empty_or_null(model))
audit(AUDIT_OS_CONF_UNKNOWN, 'Zyxel device');
if ('VPN' >< model || 'USG FLEX' >< model )
constraints = [{ 'min_version' : '4.50', 'fixed_version' : '5.38', 'fixed_display' : '5.37 Patch 1' }];
else
audit(AUDIT_NOT_INST, 'Zyxel USG FLEX / VPN Device');
vcf::check_version_and_report(
app_info:app_info,
constraints:constraints,
severity:SECURITY_WARNING
);
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
Low
EPSS
Percentile
5.1%