Synology DiskStation Manager NTPD Denial of Service (CVE-2018-7184)

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

include('compat.inc');

if (description)
{
  script_id(502449);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/10/02");

  script_cve_id("CVE-2018-7184");

  script_name(english:"Synology DiskStation Manager NTPD Denial of Service (CVE-2018-7184)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating
the received timestamp, which allows remote attackers to cause a
denial of service (disruption) by sending a packet with a zero-origin
timestamp causing the association to reset and setting the contents of
the packet as the most recent timestamp. This issue is a result of an
incomplete fix for CVE-2015-7704.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?61e2c8cb");
  script_set_attribute(attribute:"see_also", value:"http://support.ntp.org/bin/view/Main/NtpBug3453");
  script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/archive/1/541824/100/0/threaded");
  script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/bid/103192");
  script_set_attribute(attribute:"see_also", value:"https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc");
  script_set_attribute(attribute:"see_also", value:"https://security.gentoo.org/glsa/201805-12");
  script_set_attribute(attribute:"see_also", value:"https://security.netapp.com/advisory/ntap-20180626-0001/");
  # https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?547120eb");
  script_set_attribute(attribute:"see_also", value:"https://usn.ubuntu.com/3707-1/");
  script_set_attribute(attribute:"see_also", value:"https://www.synology.com/support/security/Synology_SA_18_13");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  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_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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-7184");

  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:"2018/03/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/10/01");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:synology:diskstation_manager");
  script_set_attribute(attribute:"generated_plugin", value:"former");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Tenable.ot");

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

  script_dependencies("tenable_ot_api_integration.nasl");
  script_require_keys("Tenable.ot/Synology");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Synology');

var asset = tenable_ot::assets::get(vendor:'Synology');

var vuln_cpes = {
    "cpe:/a:synology:diskstation_manager" :
        {"versionEndExcluding" : "6.1.6-15266", "versionStartIncluding" : "5.2", "family" : "DiskStation"}
};

tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_WARNING);