SAP NetWeaver AS ABAP Denial of Service (3296378)

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

include('compat.inc');

if (description)
{
  script_id(174245);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/04/17");

  script_cve_id("CVE-2023-28763");
  script_xref(name:"IAVA", value:"2023-A-0192");

  script_name(english:"SAP NetWeaver AS ABAP Denial of Service (3296378)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SAP NetWeaver server is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"A denial of service vulnerability exists in SAP NetWeaver AS for ABAP and ABAP Platform versions 740, 750,
751, 752, 753, 754, 755, 756, 757, 791, allowing an attacker authenticated as a non-administrative user to craft a
request with certain parameters which can consume the server's resources sufficiently to make it unavailable over the
network without any user interaction.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://launchpad.support.sap.com/#/notes/3296378");
  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:S/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:L/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-2023-28763");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/04/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/04/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/04/13");

  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_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2023 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();

var fix = 'See vendor advisory';
var constraints = [
  {'equal' : '740', 'fixed_display' : fix},
  {'min_version': '750', 'max_version': '757', 'fixed_display': fix},
  {'equal' : '791', 'fixed_display' : fix}
];

vcf::sap_netweaver_as::check_version_and_report(
  app_info:app_info, 
  constraints:constraints, 
  severity:SECURITY_WARNING, 
  abap:TRUE
);