Siemens APE1808 Improper Neutralization of CRLF Sequences in HTTP Headers (CVE-2024-54021)

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

include('compat.inc');

if (description)
{
  script_id(505239);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/01");

  script_cve_id("CVE-2024-54021");
  script_xref(name:"ICSA", value:"25-044-06");

  script_name(english:"Siemens APE1808 Improper Neutralization of CRLF Sequences in HTTP Headers (CVE-2024-54021)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"An improper neutralization of crlf sequences in http headers ('http
response splitting') in Fortinet FortiOS 7.2.0 through 7.6.0,
FortiProxy 7.2.0 through 7.4.5 allows attacker to execute unauthorized
code or commands via crafted HTTP header.

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-770770.html");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-25-044-06");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:N/UI:N/S:C/C:N/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-2024-54021");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(113);

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/01/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/02/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/23");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:ruggedcom_ape1808_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) 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_ape1808_firmware" :
        {"versionEndExcluding" : "7.4.7", "family" : "APE1808"}
};

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