SAP NetWeaver AS ABAP Incorrect Authorization (November 2021)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(155603);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/12/17");

  script_cve_id("CVE-2021-40504");
  script_xref(name:"IAVA", value:"2021-A-0557-S");

  script_name(english:"SAP NetWeaver AS ABAP Incorrect Authorization (November 2021)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SAP NetWeaver ABAP server is affected by an incorrect authorization vulnerability.");
  script_set_attribute(attribute:"description", value:
"An incorrect authorization vulnerability may be present in SAP NetWeaver Application Server ABAP. A certain template
role in SAP NetWeaver Application Server for ABAP and ABAP Platform - versions 700, 701, 702, 710, 711, 730, 731, 740,
750, 751, 752, 753, 754, 755, 756, contains transport authorizations, which exceed expected display only permissions.

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://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=589496864");
  script_set_attribute(attribute:"see_also", value:"https://launchpad.support.sap.com/#/notes/3105728");
  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: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:H/UI:N/S:U/C:N/I:H/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-2021-40504");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/11/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/11/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/11/18");

  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:"II");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2021 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');

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

if (report_paranoia < 2)
  audit(AUDIT_PARANOID);

var fix = 'See vendor advisory';
var constraints = [
    {'equal' : '700', 'fixed_display' : fix },
    {'equal' : '701', 'fixed_display' : fix },
    {'equal' : '702', 'fixed_display' : fix },
    {'equal' : '710', 'fixed_display' : fix },
    {'equal' : '711', 'fixed_display' : fix },
    {'equal' : '730', 'fixed_display' : fix },
    {'equal' : '731', 'fixed_display' : fix },
    {'equal' : '740', 'fixed_display' : fix },
    {'equal' : '750', 'fixed_display' : fix },
    {'equal' : '751', 'fixed_display' : fix },
    {'equal' : '752', 'fixed_display' : fix },
    {'equal' : '753', 'fixed_display' : fix },
    {'equal' : '754', 'fixed_display' : fix },
    {'equal' : '755', 'fixed_display' : fix },
    {'equal' : '756', 'fixed_display' : fix }
  ];

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