Siemens SCALANCE X Switches Improper Neutralization of Input During Web Page Generation (CVE-2018-4842)

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

include('compat.inc');

if (description)
{
  script_id(500757);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/11");

  script_cve_id("CVE-2018-4842");

  script_name(english:"Siemens SCALANCE X Switches Improper Neutralization of Input During Web Page Generation (CVE-2018-4842)");

  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 SCALANCE X-200IRT switch family
(incl. SIPLUS NET variants) (All versions < V5.4.1), SCALANCE X-200RNA
switch family (All versions < V3.2.7), SCALANCE X-300 switch family
(incl. X408 and SIPLUS NET variants) (All versions < V4.1.3). A
remote, authenticated attacker with access to the configuration web
server could be able to store script code on the web site, if the HRP
redundancy option is set. This code could be executed in the web
browser of victims visiting this web site (XSS), affecting its
confidentiality, integrity and availability. User interaction is
required for successful exploitation, as the user needs to visit the
manipulated web site. At the stage of publishing this security
advisory no public exploitation is known. The vendor has confirmed the
vulnerability and provides mitigations to resolve it.

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-480829.pdf");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-18-163-02");
  script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/bid/104494");
  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 provided updates for the following products to fix the vulnerabilities:

- SCALANCE X-200: Update to v5.2.3
- SCALANCE X-200 IRT: Update to v5.4.1
- SCALANCE X-300: Update to v4.1.3

- SCALANCE X-200RNA switch family: Update to V3.2.7 or later version

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 on these vulnerabilities and associated software updates, please see Siemens security advisory
SSA-480829");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N");
  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:H/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-4842");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(79);

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/06/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/06/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/01/25");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_x200rna_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_x200irt_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_x300_series_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) 2023-2024 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:scalance_x200irt_series_firmware" :
        {"versionEndExcluding" : "5.4.1", "family" : "SCALANCEX200IRT"},
    "cpe:/o:siemens:scalance_x300_series_firmware:-" :
        {"versionEndExcluding" : "4.1.3", "family" : "SCALANCEX300"},
    "cpe:/o:siemens:scalance_x200rna_series_firmware" :
        {"versionEndExcluding" : "3.2.7", "family" : "SCALANCEX200"}
};

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