SAP NetWeaver AS Java Reverse Tabnabbing (2965315)

##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(162785);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/03/23");

  script_cve_id("CVE-2020-6365");
  script_xref(name:"IAVA", value:"2020-A-0364-S");

  script_name(english:"SAP NetWeaver AS Java Reverse Tabnabbing (2965315)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SAP NetWeaver AS Java server may be affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"SAP NetWeaver AS Java, versions - 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, Start Page allows an unauthenticated remote
attacker to redirect users to a malicious site due to insufficient reverse tabnabbing URL validation. The attacker could
execute phishing attacks to steal credentials of the victim or to redirect users to untrusted web pages containing
malware or similar malicious exploits.

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=558632196");
  script_set_attribute(attribute:"see_also", value:"https://launchpad.support.sap.com/#/notes/2965315");
  script_set_attribute(attribute:"solution", value:
"Apply the appropriate patch according to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/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:R/S:C/C:L/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-2020-6365");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/10/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/10/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/07/07");

  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) 2022-2023 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 constraints = [
  {'min_version' : '7.10', 'max_version' : '7.11', 'fixed_display' : 'See vendor advisory' },
  {'equal' : '7.20', 'fixed_display' : 'See vendor advisory' },
  {'equal' : '7.30', 'fixed_display' : 'See vendor advisory' },
  {'equal' : '7.31', 'fixed_display' : 'See vendor advisory' },
  {'equal' : '7.40', 'fixed_display' : 'See vendor advisory' },
  {'equal' : '7.50', 'fixed_display' : 'See vendor advisory' }
];

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