Fortinet FortiClient (FG-IR-22-059)

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

include('compat.inc');

if (description)
{
  script_id(200533);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/14");

  script_cve_id("CVE-2022-0778");

  script_name(english:"Fortinet FortiClient  (FG-IR-22-059)");

  script_set_attribute(attribute:"synopsis", value:
"remote Windows host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The version of FortiClient installed on the remote host is prior to tested version. It is, therefore, affected by a
vulnerability as referenced in the FG-IR-22-059 advisory.

  - The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop
    forever for non-prime moduli. Internally this function is used when parsing certificates that contain
    elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point
    encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has
    invalid explicit curve parameters. Since certificate parsing happens prior to verification of the
    certificate signature, any process that parses an externally supplied certificate may thus be subject to a
    denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they
    can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients
    consuming server certificates - TLS servers consuming client certificates - Hosting providers taking
    certificates or private keys from customers - Certificate authorities parsing certification requests from
    subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that
    use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS
    issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate
    which makes it slightly harder to trigger the infinite loop. However any operation which requires the
    public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-
    signed certificate to trigger the loop during verification of the certificate signature. This issue
    affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the
    15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected
    1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc). (CVE-2022-0778)

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://www.fortiguard.com/psirt/FG-IR-22-059");
  script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/secadv/20220315.txt");
  script_set_attribute(attribute:"see_also", value:"https://www.fortiguard.com/encyclopedia/ips/51345");
  script_set_attribute(attribute:"solution", value:
"Please upgrade to FortiOS version 6.0.15 or above.
Please upgrade to FortiOS version 6.2.11 or above.
Please upgrade to FortiOS version 6.4.9 or above.
Please upgrade to FortiOS version 7.0.6 or above.
Please upgrade to FortiOS version 7.2.0 or above.
Please upgrade to FortiManager version 6.4.8 or above.
Please upgrade to FortiManager version 7.0.4 or above.
Please upgrade to FortiManager version 7.2.0 or above.
Please upgrade to FortiAnalyzer version 6.4.8 or above
Please upgrade to FortiAnalyzer version 7.0.4 or above
Please upgrade to FortiAnalyzer version 7.2.0 or above
Please upgrade to FortiAuthenticator version 6.4.2 or above
Please upgrade to FortiAuthenticator version 6.5.0 or above
Please upgrade to FortiDeceptor version 4.2.0 or above
Please upgrade to FortiMail version 7.2.0 or above
Please upgrade to FortiMail version 7.0.4 or above
Please upgrade to FortiMail version 6.4.7 or above
Please upgrade to FortiMail version 6.2.9 or above
Please upgrade to FortiRecorder version 7.0.0 or above
Please upgrade to FortiRecorder version 6.4.3 or above
Please upgrade to FortiRecorder version 6.0.11 or above
Please upgrade to FortiProxy version 7.0.4 or above
Please upgrade to FortiWeb version 7.0.1 or above
Please upgrade to FortiWeb version 6.4.3 or above
Please upgrade to FortiWeb version 6.3.19 or above
Please upgrade to FortiSwitch version 7.2.0 or above
Please upgrade to FortiSwitch version 7.0.5 or above
Please upgrade to FortiSwitch version 6.4.11 or above
Please upgrade to FortiADCManager version 7.0.0 or above
Please upgrade to FortiSIEM 6.5.0 or above
Please upgrade to FortiNDR 7.0.0 or above
Please upgrade to FortiVoiceEnterprise 6.4.5 or above
Please upgrade to FortiVoiceEnterprise 6.0.12 or above
Please upgrade to FortiClientWindows 7.0.4 or above
Please upgrade to FortiClientWindows 6.4.9 or above
Please upgrade to FortiClientEMS 7.0.4 or above
Please upgrade to FortiClientEMS 6.4.8 or above
Please upgrade to FortiADC 7.1.0 or above
Please upgrade to FortiADC 7.0.2 or above
Please upgrade to FortiADC 6.2.4 or above
Please upgrade to FortiTester 7.2.0 or above
Please upgrade to FortiAIOps 1.1.0 or above
Please upgrade to FortiPortal 7.0.0 or above
Please upgrade to FortiAP version 7.2.1 or above
Please upgrade to FortiAP-W2 version 7.2.1 or above
Please upgrade to FortiClientMac version 7.0.6 or above
Please upgrade to FortiClientMac version 6.4.9 or above
Please upgrade to FortiClientLinux version 7.0.6 or above
Please upgrade to FortiClientiOS version 7.0.3 or above
Please upgrade to FortiClientAndroid version 7.0.3 or above
Please upgrade to FortiIsolator 2.4.1 or above
Please upgrade to FortiIsolator 2.3.5 or above
Please upgrade to FortiWAN version 4.5.10 or above
Please upgrade to FortiDDoS-F version 6.4.0 or above
Please upgrade to FortiDDoS version 5.7.0 or above
Protection with IPS signature:
Upgrade to IPS definitions version 20.292 or above, and make sure the action for signature 51345 is set to block.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-0778");

  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:"2022/03/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/04/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/06/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:fortinet:forticlient");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("forticlient_detect.nbin");
  script_require_keys("installed_sw/FortiClient");

  exit(0);
}

include('vcf.inc');

if (empty_or_null(get_kb_item('Host/local_checks_enabled'))) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_kb_item('SMB/Registry/Enumerated'))) audit(AUDIT_OS_NOT, 'Windows');

var app_name = 'FortiClient';
var app_info = vcf::get_app_info(app:app_name);

var constraints = [
  { 'min_version' : '6.4.0', 'max_version' : '6.4.8', 'fixed_version' : '6.4.9' }
];

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