Siemens SCALANCE Privilege Escalation (CVE-2013-3633)

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

include('compat.inc');

if (description)
{
  script_id(500736);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/14");

  script_cve_id("CVE-2013-3633");

  script_name(english:"Siemens SCALANCE Privilege Escalation (CVE-2013-3633)");

  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-200 switch family
(incl. SIPLUS NET variants) (Versions < V5.0.0 for CVE-2013-3633 and
versions < V4.5.0 for CVE-2013-3634), SCALANCE X-200IRT switch family
(incl. SIPLUS NET variants) (All versions < V5.1.0). The user
privileges for the web interface are only enforced on client side and
not properly verified on server side. Therefore, an attacker is able
to execute privileged commands using an unprivileged account.

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-170686.pdf");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-13-149-01");
  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 updating these products:

- SCALANCE X-200 switch family: Update to v5.0.0 (released in 2013), or any later version (currently v5.2.4) 
- SCALANCE X-200IRT switch family: Update to v5.1.0 (released in 2013), or any later version (currently v5.4.2)

If it is not possible to install the firmware update, mitigate the SNMP vulnerability by either disabling SNMP or
completely disabling read-write access.

As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate
mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends configuring the
environment according to Siemens’

Operational Guidelines for Industrial Security and to 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 this vulnerability and more detailed mitigation instructions, please see Siemens security
advisory SSA-170686 at the following location:

http://www.siemens.com/cert/advisories");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/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:H/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-2013-3633");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(264);

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/05/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/05/24");
  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_x200_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_x200irt_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 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_x200_series_firmware" :
        {"versionEndExcluding" : "5.0.0", "family" : "SCALANCEX200"},
    "cpe:/o:siemens:scalance_x200irt_series_firmware" :
        {"versionEndExcluding" : "5.1.0", "family" : "SCALANCEX200IRT"}
};

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