Westermo MRD-305-DIN, MRD-315, MRD-355, and MRD-455 Use of Hard-Coded Cryptographic Key (CVE-2016-5816)

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

include('compat.inc');

if (description)
{
  script_id(502182);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/03");

  script_cve_id("CVE-2016-5816");

  script_name(english:"Westermo MRD-305-DIN, MRD-315, MRD-355, and MRD-455 Use of Hard-Coded Cryptographic Key (CVE-2016-5816)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"A Use of Hard-Coded Cryptographic Key issue was discovered in
MRD-305-DIN versions older than 1.7.5.0, and MRD-315, MRD-355, MRD-455
versions older than 1.7.5.0. The device utilizes hard-coded private
cryptographic keys that may allow an attacker to decrypt traffic from
any other source.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://www.westermo.com/us/-/media/Files/Cyber-security/westermo_sa_weos-15-08_v2.pdf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a4b8b54e");
  script_set_attribute(attribute:"see_also", value:"https://ics-cert.us-cert.gov/advisories/ICSA-17-236-01");
  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.

Westermo recommends that users update to the latest firmware version 1.7.7.0. The new version can be downloaded at:

http://www.westermo.com

Westermo has also released a security advisory that can be found at:

http://www.westermo.com/solutions/cyber-security/resource-centre");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  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:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-5816");

  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:"2017/08/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/08/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/03");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:westermo:mrd-305-din_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:westermo:mrd-315-din_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:westermo:mrd-355-din_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:westermo:mrd-455-din_firmware:-");
  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/Westermo");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Westermo');

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

var vuln_cpes = {
    "cpe:/o:westermo:mrd-305-din_firmware:-" :
        {"family" : "WestermoCellular", "versionEndExcluding" : "1.7.5.0"},
    "cpe:/o:westermo:mrd-315-din_firmware:-" :
        {"family" : "WestermoCellular", "versionEndExcluding" : "1.7.5.0"},
    "cpe:/o:westermo:mrd-355-din_firmware:-" :
        {"family" : "WestermoCellular", "versionEndExcluding" : "1.7.5.0"},
    "cpe:/o:westermo:mrd-455-din_firmware:-" :
        {"family" : "WestermoCellular", "versionEndExcluding" : "1.7.5.0"}
};

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