SAP NetWeaver Denial of Service (3805681)

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

include('compat.inc');

if (description)
{
  script_id(379592);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/11/13");

  script_cve_id("CVE-2026-109794");

  script_name(english:"SAP NetWeaver Denial of Service (3805681)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SAP NetWeaver application server is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of the SAP NetWeaver kernel detected on the remote host is affected by a denial of service vulnerability as
referenced in SAP Security Note 3805681:

  - SAP NetWeaver Application Server ABAP, ABAP Platform, and SAP Web Dispatcher do not sufficiently handle
    resource consumption when processing certain requests. An unauthenticated attacker could send specially
    crafted requests to the affected component, causing excessive resource utilization and service disruption.
    This results in a high impact on availability. There is no impact on confidentiality and integrity.
    (CVE-2026-109794)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://support.sap.com/en/my-support/knowledge-base/security-notes-news/november-2026.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9ccf2ea3");
  script_set_attribute(attribute:"see_also", value:"https://me.sap.com/notes/3805681");
  script_set_attribute(attribute:"solution", value:
"Apply the appropriate patch according to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/I:N/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-2026-109794");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/11/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/11/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/11/12");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:sap:netweaver_application_server");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Web Servers");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("sap_netweaver_as_web_detect.nbin");
  script_require_keys("installed_sw/SAP Netweaver Application Server (AS)", "Settings/ParanoidReport");
  script_require_ports("Services/www", 80, 443, 8000, 50000);

  exit(0);
}

include('vcf_extras_sap.inc');

if (report_paranoia < 2) audit(AUDIT_PARANOID);

var app_info = vcf::sap_netweaver_as::get_app_info(kernel:TRUE);

var fix = 'See vendor advisory';
var constraints = [
  {'equal' : '7.77', 'fixed_display' : fix },
  {'equal' : '7.93', 'fixed_display' : fix },
  {'equal' : '9.16', 'fixed_display' : fix }
];

vcf::sap_netweaver_as::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_HOLE,
  kernel:TRUE
);