SAP NetWeaver AS ABAP XSS (3721424)

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

include('compat.inc');

if (description)
{
  script_id(335403);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/14");

  script_cve_id("CVE-2026-66779");
  script_xref(name:"IAVA", value:"2026-A-0825");

  script_name(english:"SAP NetWeaver AS ABAP XSS (3721424)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SAP NetWeaver AS ABAP server is affected by a cross-site scripting vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of SAP NetWeaver AS ABAP detected on the remote host is affected by a cross-site scripting vulnerability as
referenced in SAP Security Note 3721424:

  - Due to a Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Application Server ABAP, an
    authenticated attacker could generate a malicious link and make it publicly accessible. If an
    authenticated victim accesses this link, the injected input is processed and reflected within the DOM on
    the client side during page rendering, resulting in the execution of malicious content in the victim's
    browser context. Successful exploitation could result in a high impact to the confidentiality and a low
    impact to the integrity of the system, while availability remains unaffected. (CVE-2026-66779)

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/august-2026.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0b3f7da5");
  script_set_attribute(attribute:"see_also", value:"https://me.sap.com/notes/3721424");
  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:C/I:P/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-66779");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/08/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/14");

  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) 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();

var fix = 'See vendor advisory';
var constraints = [
  {'equal' : '731', 'fixed_display' : fix },
  {'equal' : '754', 'fixed_display' : fix },
  {'equal' : '755', 'fixed_display' : fix },
  {'equal' : '756', 'fixed_display' : fix },
  {'equal' : '757', 'fixed_display' : fix },
  {'equal' : '758', 'fixed_display' : fix },
  {'equal' : '816', 'fixed_display' : fix }
];

vcf::sap_netweaver_as::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_HOLE,
  abap:TRUE,
  flags:{"xss":TRUE}
);