SAP NetWeaver Memory Corruption (3747649)

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

include('compat.inc');

if (description)
{
  script_id(343971);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/10");

  script_cve_id("CVE-2026-44756");

  script_name(english:"SAP NetWeaver Memory Corruption (3747649)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SAP NetWeaver application server is affected by a memory corruption vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of the SAP NetWeaver kernel detected on the remote host is affected by a memory corruption vulnerability as
referenced in SAP Security Note 3747649:

  - A memory safety vulnerability exists in the Extended Passport Protocol (EPP) processing library. Under
    specific conditions, an unauthenticated attacker could exploit a crafted network request containing a
    malformed EPP header, potentially resulting in undefined behavior and abnormal program termination.
    Successful exploitation may have a high impact on the confidentiality, integrity, and availability of the
    application. (CVE-2026-44756)

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/september-2026.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f6f54b4f");
  script_set_attribute(attribute:"see_also", value:"https://me.sap.com/notes/3747649");
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-44756");

  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:"2026/09/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/09");

  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_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(kernel:TRUE);

var fix = 'See vendor advisory';
var constraints = [
  {'equal' : '7.22', 'fixed_display' : fix },
  {'equal' : '7.53', 'fixed_display' : fix },
  {'equal' : '7.54', 'fixed_display' : fix },
  {'equal' : '7.77', 'fixed_display' : fix },
  {'equal' : '7.89', 'fixed_display' : fix },
  {'equal' : '7.93', 'fixed_display' : fix },
  {'equal' : '8.04', 'fixed_display' : fix },
  {'equal' : '9.16', 'fixed_display' : fix },
  {'equal' : '9.18', 'fixed_display' : fix },
  {'equal' : '9.19', 'fixed_display' : fix },
  {'equal' : '9.20', 'fixed_display' : fix }
];

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