Siemens SIMATIC Observable Discrepancy (CVE-2023-37482)

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

include('compat.inc');

if (description)
{
  script_id(505893);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/30");

  script_cve_id("CVE-2023-37482");

  script_name(english:"Siemens SIMATIC Observable Discrepancy (CVE-2023-37482)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The webserver of several SIMATIC products is affected by a user
enumeration vulnerability that could allow an unauthenticated remote
attacker to identify valid usernames. The login functionality of the
web server in affected devices does not normalize the response times
of login attempts. An unauthenticated remote attacker could exploit
this side-channel information to distinguish between valid and
invalid usernames.

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-portal.siemens.com/productcert/html/ssa-195895.html");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-25-044-02");
  script_set_attribute(attribute:"solution", value:
"The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original
can be found at CISA.gov.

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

- SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0), SIMATIC Drive Controller CPU 1507D TF
(6ES7615-7DF10-0AB0), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants), SIMATIC S7-1500 CPU
1510SP F-1 PN (6ES7510-1SK03-0AB0), SIMATIC S7-1500 CPU 1510SP-1 PN (6ES7510-1DK03-0AB0), SIMATIC S7-1500 CPU 1511-1 PN
(6ES7511-1AL03-0AB0), SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CL03-0AB0), SIMATIC S7-1500 CPU 1511F-1 PN
(6ES7511-1FL03-0AB0), SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TL03-0AB0), SIMATIC S7-1500 CPU 1511TF-1 PN
(6ES7511-1UL03-0AB0), SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CM03-0AB0), SIMATIC S7-1500 CPU 1512SP F-1 PN
(6ES7512-1SM03-0AB0), SIMATIC S7-1500 CPU 1512SP-1 PN (6ES7512-1DM03-0AB0), SIMATIC S7-1500 CPU 1513-1 PN
(6ES7513-1AM03-0AB0), SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FM03-0AB0), SIMATIC S7-1500 CPU 1513pro F-2 PN
(6ES7513-2GM03-0AB0), SIMATIC S7-1500 CPU 1513pro-2 PN (6ES7513-2PM03-0AB0), SIMATIC S7-1500 CPU 1513R-1 PN
(6ES7513-1RM03-0AB0), SIMATIC S7-1500 CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0), SIMATIC S7-1500 CPU 1514SP-2 PN
(6ES7514-2DN03-0AB0), SIMATIC S7-1500 CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0), SIMATIC S7-1500 CPU 1514SPT-2 PN
(6ES7514-2VN03-0AB0), SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AN03-0AB0), SIMATIC S7-1500 CPU 1515F-2 PN
(6ES7515-2FN03-0AB0), SIMATIC S7-1500 CPU 1515R-2 PN (6ES7515-2RN03-0AB0), SIMATIC S7-1500 CPU 1515T-2 PN
(6ES7515-2TN03-0AB0), SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UN03-0AB0), SIMATIC S7-1500 CPU 1516-3 PN/DP
(6ES7516-3AP03-0AB0), SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FP03-0AB0), SIMATIC S7-1500 CPU 1516pro F-2 PN
(6ES7516-2GP03-0AB0), SIMATIC S7-1500 CPU 1516pro-2 PN (6ES7516-2PP03-0AB0), SIMATIC S7-1500 CPU 1516T-3 PN/DP
(6ES7516-3TN00-0AB0), SIMATIC S7-1500 CPU 1516TF-3 PN/DP (6ES7516-3UN00-0AB0), SIMATIC S7-1500 CPU 1517-3 PN/DP
(6ES7517-3AP00-0AB0), SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP00-0AB0), SIMATIC S7-1500 CPU 1517F-3 PN/DP
(6ES7517-3FP01-0AB0), SIMATIC S7-1500 CPU 1517H-3 PN (6ES7517-3HP00-0AB0), SIMATIC S7-1500 CPU 1517T-3 PN/DP
(6ES7517-3TP00-0AB0), SIMATIC S7-1500 CPU 1517TF-3 PN/DP (6ES7517-3UP00-0AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP
(6ES7518-4AP00-0AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
(6ES7518-4AX00-1AC0), SIMATIC S7-1500 CPU 1518F-4 PN/DP (6ES7518-4FP00-0AB0), SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
(6ES7518-4FX00-1AB0), SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0), SIMATIC S7-1500 CPU 1518HF-4 PN
(6ES7518-4JP00-0AB0), SIMATIC S7-1500 CPU 1518T-4 PN/DP (6ES7518-4TP00-0AB0), SIMATIC S7-1500 CPU 1518TF-4 PN/DP
(6ES7518-4UP00-0AB0), SIMATIC S7-1500 Software Controller, SIMATIC S7-PLCSIM Advanced, SIPLUS S7-1500 CPU 1517H-3 PN
(6AG1517-3HP00-4AB0), SIPLUS S7-1500 CPU 1518-4 PN/DP (6AG1518-4AP00-4AB0), SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
(6AG1518-4AX00-4AC0), SIPLUS S7-1500 CPU 1518F-4 PN/DP (6AG1518-4FP00-4AB0), SIPLUS S7-1500 CPU 1518HF-4 PN
(6AG1518-4JP00-4AB0): Disable HTTP (Port 80/tcp) and provide web service access through HTTPS (Port 443/tcp) only; the
vulnerability is considered as only exploitable via HTTP.
- SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants), SIMATIC S7-1500 Software Controller:
Currently no fix is available.
- SIMATIC S7-1500 CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0), SIMATIC S7-1500 CPU 1510SP-1 PN (6ES7510-1DK03-0AB0), SIMATIC
S7-1500 CPU 1511-1 PN (6ES7511-1AL03-0AB0), SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CL03-0AB0), SIMATIC S7-1500 CPU
1511F-1 PN (6ES7511-1FL03-0AB0), SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TL03-0AB0), SIMATIC S7-1500 CPU 1511TF-1 PN
(6ES7511-1UL03-0AB0), SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CM03-0AB0), SIMATIC S7-1500 CPU 1512SP F-1 PN
(6ES7512-1SM03-0AB0), SIMATIC S7-1500 CPU 1512SP-1 PN (6ES7512-1DM03-0AB0), SIMATIC S7-1500 CPU 1513-1 PN
(6ES7513-1AM03-0AB0), SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FM03-0AB0), SIMATIC S7-1500 CPU 1513pro F-2 PN
(6ES7513-2GM03-0AB0), SIMATIC S7-1500 CPU 1513pro-2 PN (6ES7513-2PM03-0AB0), SIMATIC S7-1500 CPU 1513R-1 PN
(6ES7513-1RM03-0AB0), SIMATIC S7-1500 CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0), SIMATIC S7-1500 CPU 1514SP-2 PN
(6ES7514-2DN03-0AB0), SIMATIC S7-1500 CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0), SIMATIC S7-1500 CPU 1514SPT-2 PN
(6ES7514-2VN03-0AB0), SIMATIC S7-1500 CPU 1515-2 PN (6ES7515-2AN03-0AB0), SIMATIC S7-1500 CPU 1515F-2 PN
(6ES7515-2FN03-0AB0), SIMATIC S7-1500 CPU 1515R-2 PN (6ES7515-2RN03-0AB0), SIMATIC S7-1500 CPU 1515T-2 PN
(6ES7515-2TN03-0AB0), SIMATIC S7-1500 CPU 1515TF-2 PN (6ES7515-2UN03-0AB0), SIMATIC S7-1500 CPU 1516-3 PN/DP
(6ES7516-3AP03-0AB0), SIMATIC S7-1500 CPU 1516F-3 PN/DP (6ES7516-3FP03-0AB0), SIMATIC S7-1500 CPU 1516pro F-2 PN
(6ES7516-2GP03-0AB0), SIMATIC S7-1500 CPU 1516pro-2 PN (6ES7516-2PP03-0AB0), SIMATIC S7-1500 CPU 1516T-3 PN/DP
(6ES7516-3TN00-0AB0), SIMATIC S7-1500 CPU 1516TF-3 PN/DP (6ES7516-3UN00-0AB0), SIMATIC S7-1500 CPU 1517-3 PN/DP
(6ES7517-3AP00-0AB0), SIMATIC S7-1500 CPU 1517F-3 PN/DP (6ES7517-3FP00-0AB0), SIMATIC S7-1500 CPU 1517F-3 PN/DP
(6ES7517-3FP01-0AB0), SIMATIC S7-1500 CPU 1517H-3 PN (6ES7517-3HP00-0AB0), SIMATIC S7-1500 CPU 1517T-3 PN/DP
(6ES7517-3TP00-0AB0), SIMATIC S7-1500 CPU 1517TF-3 PN/DP (6ES7517-3UP00-0AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP
(6ES7518-4AP00-0AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0), SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
(6ES7518-4AX00-1AC0), SIMATIC S7-1500 CPU 1518F-4 PN/DP (6ES7518-4FP00-0AB0), SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
(6ES7518-4FX00-1AB0), SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0), SIMATIC S7-1500 CPU 1518HF-4 PN
(6ES7518-4JP00-0AB0), SIMATIC S7-1500 CPU 1518T-4 PN/DP (6ES7518-4TP00-0AB0), SIMATIC S7-1500 CPU 1518TF-4 PN/DP
(6ES7518-4UP00-0AB0), SIPLUS S7-1500 CPU 1517H-3 PN (6AG1517-3HP00-4AB0), SIPLUS S7-1500 CPU 1518-4 PN/DP
(6AG1518-4AP00-4AB0), SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0), SIPLUS S7-1500 CPU 1518F-4 PN/DP
(6AG1518-4FP00-4AB0), SIPLUS S7-1500 CPU 1518HF-4 PN (6AG1518-4JP00-4AB0): Update to V3.1.2 or a later version.
- SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0), SIMATIC Drive Controller CPU 1507D TF
(6ES7615-7DF10-0AB0): Update to V3.1.2 or later version.
- SIPLUS S7-1200 CPU 1212 AC/DC/RLY (6AG1212-1BE40-2XB0), SIPLUS S7-1200 CPU 1212 AC/DC/RLY (6AG1212-1BE40-4XB0), SIPLUS
S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-2XB0), SIPLUS S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-4XB0), SIPLUS S7-1200
CPU 1212C DC/DC/DC (6AG1212-1AE40-2XB0), SIPLUS S7-1200 CPU 1212C DC/DC/DC (6AG1212-1AE40-4XB0), SIPLUS S7-1200 CPU
1212C DC/DC/DC RAIL (6AG2212-1AE40-1XB0), SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-2XB0), SIPLUS S7-1200 CPU
1214 AC/DC/RLY (6AG1214-1BG40-4XB0), SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-5XB0), SIPLUS S7-1200 CPU 1214
DC/DC/DC (6AG1214-1AG40-2XB0), SIPLUS S7-1200 CPU 1214 DC/DC/DC (6AG1214-1AG40-4XB0), SIPLUS S7-1200 CPU 1214 DC/DC/DC
(6AG1214-1AG40-5XB0), SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-2XB0), SIPLUS S7-1200 CPU 1214 DC/DC/RLY
(6AG1214-1HG40-4XB0), SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-5XB0), SIPLUS S7-1200 CPU 1214C DC/DC/DC RAIL
(6AG2214-1AG40-1XB0), SIPLUS S7-1200 CPU 1214FC DC/DC/DC (6AG1214-1AF40-5XB0), SIPLUS S7-1200 CPU 1214FC DC/DC/RLY
(6AG1214-1HF40-5XB0), SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-2XB0), SIPLUS S7-1200 CPU 1215 AC/DC/RLY
(6AG1215-1BG40-4XB0), SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-5XB0), SIPLUS S7-1200 CPU 1215 DC/DC/DC
(6AG1215-1AG40-2XB0), SIPLUS S7-1200 CPU 1215 DC/DC/DC (6AG1215-1AG40-4XB0), SIPLUS S7-1200 CPU 1215 DC/DC/RLY
(6AG1215-1HG40-2XB0), SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-4XB0), SIPLUS S7-1200 CPU 1215 DC/DC/RLY
(6AG1215-1HG40-5XB0), SIPLUS S7-1200 CPU 1215C DC/DC/DC (6AG1215-1AG40-5XB0), SIPLUS S7-1200 CPU 1215FC DC/DC/DC
(6AG1215-1AF40-5XB0): Update to V4.7 or a later version.
- SIMATIC S7-1200 CPU 1211C AC/DC/Rly (6ES7211-1BE40-0XB0), SIMATIC S7-1200 CPU 1211C DC/DC/DC (6ES7211-1AE40-0XB0),
SIMATIC S7-1200 CPU 1211C DC/DC/Rly (6ES7211-1HE40-0XB0), SIMATIC S7-1200 CPU 1212C AC/DC/Rly (6ES7212-1BE40-0XB0),
SIMATIC S7-1200 CPU 1212C DC/DC/DC (6ES7212-1AE40-0XB0), SIMATIC S7-1200 CPU 1212C DC/DC/Rly (6ES7212-1HE40-0XB0),
SIMATIC S7-1200 CPU 1212FC DC/DC/DC (6ES7212-1AF40-0XB0), SIMATIC S7-1200 CPU 1212FC DC/DC/Rly (6ES7212-1HF40-0XB0),
SIMATIC S7-1200 CPU 1214C AC/DC/Rly (6ES7214-1BG40-0XB0), SIMATIC S7-1200 CPU 1214C DC/DC/DC (6ES7214-1AG40-0XB0),
SIMATIC S7-1200 CPU 1214C DC/DC/Rly (6ES7214-1HG40-0XB0), SIMATIC S7-1200 CPU 1214FC DC/DC/DC (6ES7214-1AF40-0XB0),
SIMATIC S7-1200 CPU 1214FC DC/DC/Rly (6ES7214-1HF40-0XB0), SIMATIC S7-1200 CPU 1215C AC/DC/Rly (6ES7215-1BG40-0XB0),
SIMATIC S7-1200 CPU 1215C DC/DC/DC (6ES7215-1AG40-0XB0), SIMATIC S7-1200 CPU 1215C DC/DC/Rly (6ES7215-1HG40-0XB0),
SIMATIC S7-1200 CPU 1215FC DC/DC/DC (6ES7215-1AF40-0XB0), SIMATIC S7-1200 CPU 1215FC DC/DC/Rly (6ES7215-1HF40-0XB0),
SIMATIC S7-1200 CPU 1217C DC/DC/DC (6ES7217-1AG40-0XB0): Update to V4.7 or a later version.
- SIMATIC S7-PLCSIM Advanced: Update to V7.0 or a later version.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To
operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens'
operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage.

For more information see the associated Siemens security advisory SSA-195895 in HTML and CSAF.");
  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_attribute(attribute:"cvss_score_source", value:"CVE-2023-37482");
  script_cwe_id(203);

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/02/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/02/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/30");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-1200_cpu_firmware:4.7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:siplus_s7-1200_cpu_firmware:4.7");
  script_set_attribute(attribute:"generated_plugin", value:"former");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Tenable.ot");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("tenable_ot_api_integration.nasl");
  script_require_keys("Tenable.ot/Siemens");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Siemens');

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

var vuln_cpes = {
    "cpe:/o:siemens:simatic_s7-1200_cpu_firmware:4.7" :
        {"versionEndExcluding" : "4.7", "family" : "S71200", "orderNumbers" : ['6ES7211-1BE40-0XB0', '6ES7211-1AE40-0XB0', '6ES7211-1HE40-0XB0', '6ES7212-1BE40-0XB0', '6ES7212-1AE40-0XB0', '6ES7212-1HE40-0XB0', '6ES7212-1AF40-0XB0', '6ES7212-1HF40-0XB0', '6ES7214-1BG40-0XB0', '6ES7214-1AG40-0XB0', '6ES7214-1HG40-0XB0', '6ES7214-1AF40-0XB0', '6ES7214-1HF40-0XB0', '6ES7215-1BG40-0XB0', '6ES7215-1AG40-0XB0', '6ES7215-1HG40-0XB0', '6ES7215-1AF40-0XB0', '6ES7215-1HF40-0XB0', '6ES7217-1AG40-0XB0']},
    "cpe:/o:siemens:siplus_s7-1200_cpu_firmware:4.7" :
        {"versionEndExcluding" : "4.7", "family" : "S71200", "orderNumbers" : ['6AG1212-1BE40-2XB0', '6AG1212-1BE40-4XB0', '6AG1212-1HE40-2XB0', '6AG1212-1HE40-4XB0', '6AG1212-1AE40-2XB0', '6AG1212-1AE40-4XB0', '6AG2212-1AE40-1XB0', '6AG1214-1BG40-2XB0', '6AG1214-1BG40-4XB0', '6AG1214-1BG40-5XB0', '6AG1214-1AG40-2XB0', '6AG1214-1AG40-4XB0', '6AG1214-1AG40-5XB0', '6AG1214-1HG40-2XB0', '6AG1214-1HG40-4XB0', '6AG1214-1HG40-5XB0', '6AG2214-1AG40-1XB0', '6AG1214-1AF40-5XB0', '6AG1214-1HF40-5XB0', '6AG1215-1BG40-2XB0', '6AG1215-1BG40-4XB0', '6AG1215-1BG40-5XB0', '6AG1215-1AG40-2XB0', '6AG1215-1AG40-4XB0', '6AG1215-1HG40-2XB0', '6AG1215-1HG40-4XB0', '6AG1215-1HG40-5XB0', '6AG1215-1AG40-5XB0', '6AG1215-1AF40-5XB0']}
};

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