Siemens SCALANCE and RUGGEDCOM Devices Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (CVE-2024-40902)

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

include('compat.inc');

if (description)
{
  script_id(504695);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/13");

  script_cve_id("CVE-2024-40902");
  script_xref(name:"ICSA", value:"25-226-07");

  script_name(english:"Siemens SCALANCE and RUGGEDCOM Devices Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (CVE-2024-40902)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"jfs: xattr: buffer overflow for invalid xattr. When an xattr size is
not what is expected, it is printed out to the kernel log in hex
format as a form of debugging. But when that xattr size is bigger than
the expected size, printing it out can cause an access off the end of
the buffer.

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-355557.html");
  script_set_attribute(attribute:"see_also", value:"https://support.industry.siemens.com/cs/ww/en/view/109988839/");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/ICSA-25-226-07");
  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:

- All affected products: Update to V3.2 or 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-355557 in HTML and CSAF.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/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-2024-40902");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(120);

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/08/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/08/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/18");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:ruggedcom_rst2428p_firmware:3.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xc-300_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xr-300_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xc-400_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xr-500wg_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xr-500_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xcm-300_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrm-300_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xch-300_series_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_xrh-300_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) 2025-2026 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:ruggedcom_rst2428p_firmware:3.2" :
        {"versionEndExcluding" : "3.2", "family" : "RuggedCom", "orderNumbers" : ['6GK6242-6PA00']},
    "cpe:/o:siemens:scalance_xc-300_series_firmware" :
        {"versionEndExcluding" : "3.2", "family" : "SCALANCEX300"},
    "cpe:/o:siemens:scalance_xr-300_series_firmware" :
        {"versionEndExcluding" : "3.2", "family" : "SCALANCEX300"},
    "cpe:/o:siemens:scalance_xc-400_series_firmware" :
        {"versionEndExcluding" : "3.2", "family" : "SCALANCEX400"},
    "cpe:/o:siemens:scalance_xr-500wg_series_firmware" :
        {"versionEndExcluding" : "3.2", "family" : "SCALANCEX500"},
    "cpe:/o:siemens:scalance_xr-500_series_firmware" :
        {"versionEndExcluding" : "3.2", "family" : "SCALANCEX500"},
    "cpe:/o:siemens:scalance_xcm-300_series_firmware" :
        {"versionEndExcluding" : "3.2", "family" : "SCALANCEX300"},
    "cpe:/o:siemens:scalance_xrm-300_series_firmware" :
        {"versionEndExcluding" : "3.2", "family" : "SCALANCEX300"},
    "cpe:/o:siemens:scalance_xch-300_series_firmware" :
        {"versionEndExcluding" : "3.2", "family" : "SCALANCEX300"},
    "cpe:/o:siemens:scalance_xrh-300_series_firmware" :
        {"versionEndExcluding" : "3.2", "family" : "SCALANCEX300"}
};

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