MikroTik RouterOS Missing Encryption of Sensitive Data (CVE-2017-6297)

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

include('compat.inc');

if (description)
{
  script_id(502012);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/28");

  script_cve_id("CVE-2017-6297");

  script_name(english:"MikroTik RouterOS Missing Encryption of Sensitive Data (CVE-2017-6297)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The L2TP Client in MikroTik RouterOS versions 6.83.3 and 6.37.4 does
not enable IPsec encryption after a reboot, which allows man-in-the-
middle attackers to view transmitted data unencrypted and gain access
to networks on the L2TP server by monitoring the packets for the
transmitted data and obtaining the L2TP secret.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/bid/96447");
  # https://blog.milne.it/2017/02/24/mikrotik-routeros-security-vulnerability-l2tp-tunnel-unencrypted-cve-2017-6297/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?90975a2d");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-6297");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(311);

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/02/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/02/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/02/27");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mikrotik:routeros:6.37.4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mikrotik:routeros:6.83.3");
  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/MikroTik");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/MikroTik');

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

var vuln_cpes = {
    "cpe:/o:mikrotik:routeros:6.37.4" :
        {"versionEndIncluding" : "6.37.4", "versionStartIncluding" : "6.37.4", "family" : "RouterOS"},
    "cpe:/o:mikrotik:routeros:6.83.3" :
        {"versionEndIncluding" : "6.83.3", "versionStartIncluding" : "6.83.3", "family" : "RouterOS"}
};

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