The remote host is running a version of Fortinet FortiOS 5.0.x prior to 5.0.1. It is, therefore, affected by multiple denial of service vulnerabilities :
A flaw exists related to the handling of SSH traffic. An unauthenticated, remote attacker can exploit this to crash the proxyworker service.
A flaw exists in the WAD daemon that is triggered during the handling of HTTP 0.9 traffic. An unauthenticated, remote attacker can exploit this to crash the daemon.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(85740);
script_version("1.7");
script_cvs_date("Date: 2019/01/02 11:18:37");
script_name(english:"Fortinet FortiOS 5.0.x < 5.0.1 Multiple DoS");
script_summary(english:"Checks the version of FortiOS.");
script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple denial of service
vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The remote host is running a version of Fortinet FortiOS 5.0.x prior
to 5.0.1. It is, therefore, affected by multiple denial of service
vulnerabilities :
- A flaw exists related to the handling of SSH traffic. An
unauthenticated, remote attacker can exploit this to
crash the proxyworker service.
- A flaw exists in the WAD daemon that is triggered during
the handling of HTTP 0.9 traffic. An unauthenticated,
remote attacker can exploit this to crash the daemon.
");
# https://kb.fortinet.com/kb/microsites/search.do?cmd=displayKC&docType=kc&externalId=FortiOS-v50-Patch-Release-1-Release-Notespdf
script_set_attribute(attribute:"see_also",value:"http://www.nessus.org/u?cb3eaed4");
script_set_attribute(attribute:"solution", value:
"Upgrade to Fortinet FortiOS 5.0.1 or later.");
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:U/RL:OF/RC:C");
script_set_attribute(attribute:"vuln_publication_date", value:"2013/04/12");
script_set_attribute(attribute:"patch_publication_date", value:"2013/04/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/09/02");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:fortinet:fortios");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Firewalls");
script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("fortinet_version.nbin");
script_require_keys("Host/Fortigate/model", "Host/Fortigate/version", "Host/Fortigate/build");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
app_name = "FortiOS";
model = get_kb_item_or_exit("Host/Fortigate/model");
version = get_kb_item_or_exit("Host/Fortigate/version");
build = get_kb_item_or_exit("Host/Fortigate/build");
vuln = FALSE;
# Make sure device is FortiGate
if (!preg(string:model, pattern:"fortigate", icase:TRUE)) audit(AUDIT_OS_NOT, app_name);
if (version =~ "^5\.")
{
fix = "5.0.1";
fix_build = 147;
}
else audit(AUDIT_INST_VER_NOT_VULN, app_name, version);
# If build number is available, this is the safest comparison.
# Otherwise compare version numbers.
if (build !~ "Unknown")
{
if (int(build) < fix_build) vuln = TRUE;
report_build = build;
}
else if (ver_compare(ver:version, fix:fix, strict:FALSE) == -1) vuln = TRUE;
if (vuln)
{
if (report_verbosity > 0)
{
report =
'\n Model : ' + model +
'\n Installed version : ' + version +
'\n Fixed version : 5.0.1';
if (!empty_or_null(report_build))
report +=
'\n Installed build : ' + report_build +
'\n Fixed build : ' + fix_build;
report += '\n';
security_warning(extra:report, port:0);
}
else security_warning(port:0);
exit(0);
}
else audit(AUDIT_INST_VER_NOT_VULN, app_name, version);