SAP NetWeaver AS Desynchronization (ICMAD)

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

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

if (description)
{
  script_id(157848);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/05");

  script_cve_id("CVE-2022-22536");
  script_xref(name:"IAVA", value:"2022-A-0063");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/09/08");
  script_xref(name:"CEA-ID", value:"CEA-2022-0006");

  script_name(english:"SAP NetWeaver AS Desynchronization (ICMAD)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SAP NetWeaver application server is affected by a desynchronization vulnerability.");
  script_set_attribute(attribute:"description", value:
"SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53
and SAP Web Dispatcher are vulnerable for request smuggling and request concatenation.

An unauthenticated attacker can prepend a victim's request with arbitrary data. This way, the attacker can execute 
functions impersonating the victim or poison intermediary Web caches. A successful attack  could result in complete 
compromise of Confidentiality, Integrity and Availability of the system.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://blogs.sap.com/2022/02/08/sap-partners-with-onapsis-to-identify-and-patch-cybersecurity-vulnerabilities/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f0c19cc7");
  script_set_attribute(attribute:"see_also", value:"https://launchpad.support.sap.com/#/notes/3123396");
  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:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-22536");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/02/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/02/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/09");

  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) 2022 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(kernel:TRUE);

if (report_paranoia < 2)
  audit(AUDIT_PARANOID);

var fix = 'See vendor advisory';

# Kernel constraints
var constraints = [
    {'equal' : '7.22', 'fixed_display' : fix },
    {'equal' : '7.49', 'fixed_display' : fix },
    {'equal' : '7.53', 'fixed_display' : fix },
    {'equal' : '7.77', 'fixed_display' : fix },
    {'equal' : '7.81', 'fixed_display' : fix },
    {'min_version' : '7.85', 'max_version' : '7.87', 'fixed_display' : fix },
    {'equal' : '8.04', 'fixed_display' : fix }
];

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