SAP NetWeaver AS ABAP Open Redirect (3692004)

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

include('compat.inc');

if (description)
{
  script_id(306732);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/20");

  script_cve_id("CVE-2026-34257");
  script_xref(name:"IAVA", value:"2026-A-0328");

  script_name(english:"SAP NetWeaver AS ABAP Open Redirect (3692004)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SAP NetWeaver ABAP server is affected by an open redirect vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of SAP NetWeaver AS ABAP and ABAP Platform detected on the remote host is affected by an open redirect
vulnerability as referenced in the SAP Security Patch Day April 2026:

  - Due to an Open Redirect vulnerability in SAP NetWeaver Application Server ABAP, an unauthenticated
    attacker could craft malicious URL that, if accessed by a victim, they could be redirected to the page
    controlled by the attacker. This causes low impact on confidentiality and integrity of the application
    with no impact on availability. (CVE-2026-34257)

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://me.sap.com/notes/3692004");
  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: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-2026-34257");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/04/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/16");

  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' : '700', 'fixed_display' : fix },
  {'equal' : '701', 'fixed_display' : fix },
  {'equal' : '702', 'fixed_display' : fix },
  {'equal' : '731', 'fixed_display' : fix },
  {'equal' : '740', 'fixed_display' : fix },
  {'equal' : '750', '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 },
  {'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_WARNING,
  abap:TRUE
);