Moxa MB3xxx Series Protocol Gateways Stack-Based Buffer Overflow (CVE-2019-9099)

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

include('compat.inc');

if (description)
{
  script_id(501442);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/04");

  script_cve_id("CVE-2019-9099");

  script_name(english:"Moxa MB3xxx Series Protocol Gateways Stack-Based Buffer Overflow (CVE-2019-9099)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"An issue was discovered on Moxa MGate MB3170 and MB3270 devices before
4.1, MB3280 and MB3480 devices before 3.1, MB3660 devices before 2.3,
and MB3180 devices before 2.1. A Buffer overflow in the built-in web
server allows remote attackers to initiate DoS, and probably to
execute arbitrary code (issue 1 of 2).

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://www.moxa.com/en/support/support/security-advisory/mb3710-3180-3270-3280-3480-3660-vulnerabilities
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6506053d");
  script_set_attribute(attribute:"see_also", value:"https://www.us-cert.gov/ics/advisories/icsa-20-056-01");
  script_set_attribute(attribute:"solution", value:
"The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original
can be found at CISA.gov.

Moxa has developed the following solutions to address the vulnerabilities:

- MB3170 Series: Download the new firmware.
- MB3270 Series: Download the new firmware.
- MB3180 Series: Download the new firmware. 
    - Moxa also recommends users follow below instructions to mitigate potential risks: 
        - Upgrade to the latest firmware and disable HTTP and Telnet communications.
        - Use Moxa utilities (MGate Manager, NPort Administration Suite Utility) to change device configurations or
monitor the device status remotely.
        - Use a VPN tunnel for a secure and protected connection between the devices and host PC.
- MB3280 Series: Download the new firmware.
- MB3480 Series: Download the new firmware.
- MB3660 Series: Download the new firmware.

Please see Moxa’s security advisory for more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/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:H/I:H/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-2019-9099");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(120);

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/08/02");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:mb3170_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:mb3180_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:mb3270_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:mb3280_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:mb3480_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:moxa:mb3660_firmware");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Moxa');

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

var vuln_cpes = {
    "cpe:/o:moxa:mb3170_firmware" :
        {"versionEndIncluding" : "4.0", "family" : "MoxaMGate"},
    "cpe:/o:moxa:mb3270_firmware" :
        {"versionEndIncluding" : "4.0", "family" : "MoxaMGate"},
    "cpe:/o:moxa:mb3180_firmware" :
        {"versionEndIncluding" : "2.0", "family" : "MoxaMGate"},
    "cpe:/o:moxa:mb3280_firmware" :
        {"versionEndIncluding" : "3.0", "family" : "MoxaMGate"},
    "cpe:/o:moxa:mb3480_firmware" :
        {"versionEndIncluding" : "3.0", "family" : "MoxaMGate"},
    "cpe:/o:moxa:mb3660_firmware" :
        {"versionEndIncluding" : "2.2", "family" : "MoxaMGate"}
};

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