CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
EPSS
Percentile
42.5%
Improper Authentication vulnerability in WAGO 750-8XX series with FW version <= FW03 allows an attacker to change the settings of the devices by sending specifically constructed requests without authentication This issue affects: WAGO 750-362, WAGO 750-363, WAGO 750-823, WAGO 750-832/xxx-xxx, WAGO 750-862, WAGO 750-891, WAGO 750-890/xxx-xxx in versions FW03 and prior versions.
This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(500670);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/17");
script_cve_id("CVE-2020-12506");
script_name(english:"Wago 750-8XX series Improper Authentication (CVE-2020-12506)");
script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"Improper Authentication vulnerability in WAGO 750-8XX series with FW version <= FW03 allows an attacker to change the
settings of the devices by sending specifically constructed requests without authentication This issue affects: WAGO
750-362, WAGO 750-363, WAGO 750-823, WAGO 750-832/xxx-xxx, WAGO 750-862, WAGO 750-891, WAGO 750-890/xxx-xxx in versions
FW03 and prior versions.
- Improper Authentication vulnerability in WAGO 750-8XX series with FW version <= FW03 allows an attacker to
change the settings of the devices by sending specifically constructed requests without authentication
This issue affects: WAGO 750-362, WAGO 750-363, WAGO 750-823, WAGO 750-832/xxx-xxx, WAGO 750-862, WAGO
750-891, WAGO 750-890/xxx-xxx in versions FW03 and prior versions. (CVE-2020-12506)
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://cert.vde.com/en-us/advisories/vde-2020-028");
script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:P");
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:N/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-12506");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(306);
script_set_attribute(attribute:"vuln_publication_date", value:"2020/09/30");
script_set_attribute(attribute:"patch_publication_date", value:"2020/09/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/07/21");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:750-362_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:750-363_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:750-823_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:750-832_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:750-862_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:750-890_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:750-891_firmware");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Tenable.ot");
script_copyright(english:"This script is Copyright (C) 2022-2023 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:750-362_firmware" :
{"versionEndIncluding" : "fw03", "family" : "Controller750"},
"cpe:/o:wago:750-363_firmware" :
{"versionEndIncluding" : "fw03", "family" : "Controller750"},
"cpe:/o:wago:750-823_firmware" :
{"versionEndIncluding" : "fw03", "family" : "ControllerPFC200"},
"cpe:/o:wago:750-832_firmware" :
{"versionEndIncluding" : "fw03", "family" : "Controller750"},
"cpe:/o:wago:750-862_firmware" :
{"versionEndIncluding" : "fw03", "family" : "Controller750"},
"cpe:/o:wago:750-891_firmware" :
{"versionEndIncluding" : "fw03", "family" : "Controller750"},
"cpe:/o:wago:750-890_firmware" :
{"versionEndIncluding" : "fw03", "family" : "Controller750"}
};
tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_WARNING);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
EPSS
Percentile
42.5%