CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
12.6%
The version of Fortinet FortiClient running on the remote host is prior to 6.0.3. It is, therefore, affected by a NULL pointer dereference flaw due to a failure to utilize necessary NULL checks before doing indirect function calls. An unauthenticated, local attacker can exploit this, via the NDIS Miniport drivers, to cause a denial of service condition when the application attempts to read or write memory with a NULL pointer.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(122858);
script_version("1.2");
script_cvs_date("Date: 2019/10/30 13:24:47");
script_cve_id("CVE-2018-9190");
script_name(english:"Fortinet FortiClient NDIS Miniport Driver Null Pointer Dereference");
script_summary(english:"Checks the version of FortiClient.exe.");
script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by a denial of service
vulnerability.");
script_set_attribute(attribute:"description", value:
"The version of Fortinet FortiClient running on the remote host is
prior to 6.0.3. It is, therefore, affected by a NULL pointer dereference
flaw due to a failure to utilize necessary NULL checks before doing
indirect function calls. An unauthenticated, local attacker can exploit
this, via the NDIS Miniport drivers, to cause a denial of service
condition when the application attempts to read or write memory with
a NULL pointer.");
script_set_attribute(attribute:"see_also", value:"https://fortiguard.com/psirt/FG-IR-18-092");
script_set_attribute(attribute:"solution", value:
"Upgrade to Fortinet FortiClient 6.0.3 or later.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/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:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-9190");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/01/11");
script_set_attribute(attribute:"patch_publication_date", value:"2019/02/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/14");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:fortinet:forticlient");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows");
script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("forticlient_detect.nbin");
script_require_keys("installed_sw/FortiClient", "SMB/Registry/Enumerated");
exit(0);
}
include("vcf.inc");
get_kb_item_or_exit("installed_sw/FortiClient");
app_info = vcf::get_app_info(app:"FortiClient");
constraints = [
{"fixed_version" : "6.0.3"}
];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
12.6%