An exploitable remote code execution vulnerability exists in the Cloud Connectivity functionality of WAGO PFC200 versions 03.02.02(14), 03.01.07(13), and 03.00.39(12). A specially crafted XML file will direct the Cloud Connectivity service to download and execute a shell script with root privileges.
This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(500825);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/04");
script_cve_id("CVE-2019-5161");
script_name(english:"Wago PFC200 Cloud Connectivity Remote Code Execution (CVE-2019-5161)");
script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"An exploitable remote code execution vulnerability exists in the Cloud
Connectivity functionality of WAGO PFC200 versions 03.02.02(14),
03.01.07(13), and 03.00.39(12). A specially crafted XML file will
direct the Cloud Connectivity service to download and execute a shell
script with root privileges.
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-2019-0954");
script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
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:H/UI:N/S:C/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-5161");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_cwe_id(345);
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:pfc200_firmware:03.00.39%2812%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:pfc200_firmware:03.01.07%2813%29");
script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:pfc200_firmware:03.02.02%2814%29");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Tenable.ot");
script_copyright(english:"This script is Copyright (C) 2023 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:pfc200_firmware:03.02.02%2814%29" :
{"versionEndIncluding" : "03.02.02%2814%29", "versionStartIncluding" : "03.02.02%2814%29", "family" : "ControllerPFC200"}
};
tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_HOLE);