An exploitable regular expression without anchors vulnerability exists in the Web-Based Management (WBM) authentication functionality of WAGO PFC200 versions 03.00.39(12) and 03.01.07(13), and WAGO PFC100 version 03.00.39(12). A specially crafted authentication request can bypass regular expression filters, resulting in sensitive information disclosure.
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(500821);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/22");
script_cve_id("CVE-2019-5134");
script_name(english:"Wago PFC100/200 Web-Based Management Authentication Regex Information Disclosure (CVE-2019-5134)");
script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"An exploitable regular expression without anchors vulnerability exists
in the Web-Based Management (WBM) authentication functionality of WAGO
PFC200 versions 03.00.39(12) and 03.01.07(13), and WAGO PFC100 version
03.00.39(12). A specially crafted authentication request can bypass
regular expression filters, resulting in sensitive information
disclosure.
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-2019-0923");
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: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-2019-5134");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
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);
Vendor | Product | Version | CPE |
---|---|---|---|
wago | pfc100_firmware | 03.00.39%2812%29 | cpe:/o:wago:pfc100_firmware:03.00.39%2812%29 |
wago | pfc200_firmware | 03.00.39%2812%29 | cpe:/o:wago:pfc200_firmware:03.00.39%2812%29 |
wago | pfc200_firmware | 03.01.07%2813%29 | cpe:/o:wago:pfc200_firmware:03.01.07%2813%29 |