Wago PFC100/200 Web-Based Management Authentication Timing Information Disclosure (CVE-2019-5135)

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

include('compat.inc');

if (description)
{
  script_id(500813);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/22");

  script_cve_id("CVE-2019-5135");

  script_name(english:"Wago PFC100/200 Web-Based Management Authentication Timing Information Disclosure (CVE-2019-5135)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"An exploitable timing discrepancy vulnerability exists in the
authentication functionality of the Web-Based Management (WBM) web
application on WAGO PFC100/200 controllers. The WBM application makes
use of the PHP crypt() function which can be exploited to disclose
hashed user credentials. This affects WAGO PFC200 Firmware version
03.00.39(12) and version 03.01.07(13), and WAGO PFC100 Firmware
version 03.00.39(12).

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:"https://talosintelligence.com/vulnerability_reports/TALOS-2019-0924");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  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:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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-2019-5135");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(327);

  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:"2023/02/14");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:pfc100_firmware:03.00.39%2812%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:pfc200_firmware:03.00.39%2812%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:pfc200_firmware:03.01.07%2813%29");
  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/Wago");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Wago');

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

var vuln_cpes = {
    "cpe:/o:wago:pfc200_firmware:03.00.39%2812%29" :
        {"versionEndIncluding" : "03.00.39%2812%29", "versionStartIncluding" : "03.00.39%2812%29", "family" : "ControllerPFC200"},
    "cpe:/o:wago:pfc200_firmware:03.01.07%2813%29" :
        {"versionEndIncluding" : "03.01.07%2813%29", "versionStartIncluding" : "03.01.07%2813%29", "family" : "ControllerPFC200"},
    "cpe:/o:wago:pfc100_firmware:03.00.39%2812%29" :
        {"versionEndIncluding" : "03.00.39%2812%29", "versionStartIncluding" : "03.00.39%2812%29", "family" : "ControllerPFC100"}
};

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