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nessusThis script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.TENABLE_OT_SIEMENS_CVE-2021-37734.NASL
HistoryApr 11, 2023 - 12:00 a.m.

Siemens SCALANCE W1750D Improper Limitation of a Pathname to a Restricted Directory (CVE-2021-37734)

2023-04-1100:00:00
This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
7
siemens scalance w1750d
aruba instant
remote access
vulnerability
cve-2021-37734
security scanner
tenable.ot
file access restriction.

6.8 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

48.6%

A remote unauthorized read access to files vulnerability was discovered in Aruba Instant version(s): 6.4.x.x: 6.4.4.8-4.2.4.18 and below; Aruba Instant 6.5.x.x: 6.5.4.19 and below; Aruba Instant 8.5.x.x: 8.5.0.12 and below; Aruba Instant 8.6.x.x: 8.6.0.11 and below; Aruba Instant 8.7.x.x: 8.7.1.3 and below; Aruba Instant 8.8.x.x: 8.8.0.0 and below. Aruba has released patches for Aruba Instant (IAP) that address this security vulnerability.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

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

include('compat.inc');

if (description)
{
  script_id(501023);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/22");

  script_cve_id("CVE-2021-37734");

  script_name(english:"Siemens SCALANCE W1750D Improper Limitation of a Pathname to a Restricted Directory (CVE-2021-37734)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"A remote unauthorized read access to files vulnerability was
discovered in Aruba Instant version(s): 6.4.x.x: 6.4.4.8-4.2.4.18 and
below; Aruba Instant 6.5.x.x: 6.5.4.19 and below; Aruba Instant
8.5.x.x: 8.5.0.12 and below; Aruba Instant 8.6.x.x: 8.6.0.11 and
below; Aruba Instant 8.7.x.x: 8.7.1.3 and below; Aruba Instant
8.8.x.x: 8.8.0.0 and below. Aruba has released patches for Aruba
Instant (IAP) that address this security vulnerability.

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://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-017.txt");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-21-315-06");
  script_set_attribute(attribute:"see_also", value:"https://cert-portal.siemens.com/productcert/pdf/ssa-917476.pdf");
  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 upgrading their products to the latest version:

- SCALANCE W1750D: Update to v8.7.1.3 or later.

- SCALANCE W1750D: Update to v8.7.1.9 or later

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

- Block access to the Aruba Instant Command Line Interface from all untrusted users.
- Block access to the Aruba Instant web-based management interface from all untrusted users.
- Enable the Enhanced PAPI Security feature, where available, to prevent exploitation of these vulnerabilities. For
assistance from the Siemens Technical Assistance Center (TAC), please contact Siemens (login required).
- Block access for Aruba Instant device on Port UDP/8211 from all untrusted users.

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 the Siemens operational guidelines for Industrial Security and following the recommendations in
the product manuals.

For more information see Siemens Security Advisory SSA-917476 in HTML or CSAF.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:N/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:L/UI:N/S:U/C:H/I:N/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-2021-37734");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(22);

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/10/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/10/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/04/11");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_w1750d_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_w1750d_firmware" :
        {"versionEndExcluding" : "8.7.1.9", "family" : "SCALANCEW"}
};

tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_WARNING);
VendorProductVersionCPE
siemensscalance_w1750d_firmwarecpe:/o:siemens:scalance_w1750d_firmware

6.8 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

48.6%

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