Siemens SIMATIC S7-300 CPUs and SINUMERIK Controller over Profinet Uncontrolled Resource Consumption (CVE-2019-18336)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(500360);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/04");

  script_cve_id("CVE-2019-18336");

  script_name(english:"Siemens SIMATIC S7-300 CPUs and SINUMERIK Controller over Profinet Uncontrolled Resource Consumption (CVE-2019-18336)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All
versions < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU555 (All versions < V1.1.1), SINUMERIK
840D sl (All versions < V4.8.6), SINUMERIK 840D sl (All versions < V4.94). Specially crafted packets sent to port
102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the
system. Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No
user interation is required. At the time of advisory publication no public exploitation of this security vulnerability
was known.  

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/pdf/ssa-508982.pdf");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-20-070-02");
  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 recommends the following mitigations for affected users:

- SIMATIC S7-300 CPU family: Update to Version 3.X.17

- SIMATIC TDC CP1M1: Update to v1.1.8
- SIMATIC TDC CPU555: Update to v1.1.1
- SINUMERIK 840D sl: Update to v4.8.6 (Software can be obtained from your local Siemens account manager)
- SINUMERIK 840D sl: Update to v4.94 (Software can be obtained from your local Siemens account manager)

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

- Make sure that access to Port 102/TCP is restricted (e.g., with an external firewall).

As a general security measure, Siemens strongly recommends users protect network access to devices with appropriate
mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends users configure the
environment according to Siemens’ operational guidelines for industrial security and follow the recommendations in the
product manuals.

Additional information on industrial security by Siemens can be found at: https://www.siemens.com/industrialsecurity

For more information see Siemens security advisory SSA-508982");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:N/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-2019-18336");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(400);

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/07");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-300_cpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-300_cpu_312_ifm_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-300_cpu_313_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-300_cpu_314_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-300_cpu_314_ifm_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-300_cpu_315_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-300_cpu_315-2_dp_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-300_cpu_316-2_dp_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-300_cpu_318-2_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_tdc_cp51m1_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_tdc_cpu555_firmware");
  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) 2022-2024 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_s7-300_cpu_firmware" :
        {"versionEndExcluding" : "3.0.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_firmware:3.1" :
        {"versionStartIncluding" : "3.1.0", "versionEndExcluding" : "3.1.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_firmware:3.2" :
        {"versionStartIncluding" : "3.2.0", "versionEndExcluding" : "3.2.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_firmware:3.3" :
        {"versionStartIncluding" : "3.3.0", "versionEndExcluding" : "3.3.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_312_ifm_firmware" :
        {"versionEndExcluding" : "3.0.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_312_ifm_firmware:3.1" :
        {"versionStartIncluding" : "3.1.0", "versionEndExcluding" : "3.1.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_312_ifm_firmware:3.2" :
        {"versionStartIncluding" : "3.2.0", "versionEndExcluding" : "3.2.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_312_ifm_firmware:3.3" :
        {"versionStartIncluding" : "3.3.0", "versionEndExcluding" : "3.3.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_313_firmware" :
        {"versionEndExcluding" : "3.0.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_313_firmware:3.1" :
        {"versionStartIncluding" : "3.1.0", "versionEndExcluding" : "3.1.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_313_firmware:3.2" :
        {"versionStartIncluding" : "3.2.0", "versionEndExcluding" : "3.2.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_313_firmware:3.3" :
        {"versionStartIncluding" : "3.3.0", "versionEndExcluding" : "3.3.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_314_firmware" :
        {"versionEndExcluding" : "3.0.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_314_firmware:3.1" :
        {"versionStartIncluding" : "3.1.0", "versionEndExcluding" : "3.1.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_314_firmware:3.2" :
        {"versionStartIncluding" : "3.2.0", "versionEndExcluding" : "3.2.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_314_firmware:3.3" :
        {"versionStartIncluding" : "3.3.0", "versionEndExcluding" : "3.3.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_314_ifm_firmware" :
        {"versionEndExcluding" : "3.0.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_314_ifm_firmware:3.1" :
        {"versionStartIncluding" : "3.1.0", "versionEndExcluding" : "3.1.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_314_ifm_firmware:3.2" :
        {"versionStartIncluding" : "3.2.0", "versionEndExcluding" : "3.2.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_314_ifm_firmware:3.3" :
        {"versionStartIncluding" : "3.3.0", "versionEndExcluding" : "3.3.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_315_firmware" :
        {"versionEndExcluding" : "3.0.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_315_firmware:3.1" :
        {"versionStartIncluding" : "3.1.0", "versionEndExcluding" : "3.1.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_315_firmware:3.2" :
        {"versionStartIncluding" : "3.2.0", "versionEndExcluding" : "3.2.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_315_firmware:3.3" :
        {"versionStartIncluding" : "3.3.0", "versionEndExcluding" : "3.3.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_315-2_dp_firmware" :
        {"versionEndExcluding" : "3.0.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_315-2_dp_firmware:3.1" :
        {"versionStartIncluding" : "3.1.0", "versionEndExcluding" : "3.1.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_315-2_dp_firmware:3.2" :
        {"versionStartIncluding" : "3.2.0", "versionEndExcluding" : "3.2.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_315-2_dp_firmware:3.3" :
        {"versionStartIncluding" : "3.3.0", "versionEndExcluding" : "3.3.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_316-2_dp_firmware" :
        {"versionEndExcluding" : "3.0.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_316-2_dp_firmware:3.1" :
        {"versionStartIncluding" : "3.1.0", "versionEndExcluding" : "3.1.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_316-2_dp_firmware:3.2" :
        {"versionStartIncluding" : "3.2.0", "versionEndExcluding" : "3.2.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_316-2_dp_firmware:3.3" :
        {"versionStartIncluding" : "3.3.0", "versionEndExcluding" : "3.3.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_318-2_firmware" :
        {"versionEndExcluding" : "3.0.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_318-2_firmware:3.1" :
        {"versionStartIncluding" : "3.1.0", "versionEndExcluding" : "3.1.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_318-2_firmware:3.2" :
        {"versionStartIncluding" : "3.2.0", "versionEndExcluding" : "3.2.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_s7-300_cpu_318-2_firmware:3.3" :
        {"versionStartIncluding" : "3.3.0", "versionEndExcluding" : "3.3.17", "family" : "S7300"},
    "cpe:/o:siemens:simatic_tdc_cp51m1_firmware" :
        {"versionEndExcluding" : "1.1.8", "family" : "TDCCP51m1"},
    "cpe:/o:siemens:simatic_tdc_cpu555_firmware" :
        {"versionEndExcluding" : "1.1.1", "family" : "TDCCPU555"}
};

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