Oracle Essbase Information Disclosure Vulnerability (January 2026 CPU)

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

include('compat.inc');

if (description)
{
  script_id(296371);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/03");

  script_cve_id("CVE-2025-66566");
  script_xref(name:"IAVA", value:"2026-A-0064");

  script_name(english:"Oracle Essbase Information Disclosure Vulnerability (January 2026 CPU)");

  script_set_attribute(attribute:"synopsis", value:
"A business analytics solution installed on the remote host is affected by a Information Disclosure Vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Oracle Essbase installed on the remote host is missing a security patch from the January 2026
Critical Patch Update (CPU). It is, therefore, affected by:

  - yawkat LZ4 Java provides LZ4 compression for Java. Insufficient clearing of the output buffer in Java-based 
    decompressor implementations in lz4-java 1.10.0 and earlier allows remote attackers to read previous buffer 
    contents via crafted compressed input. In applications where the output buffer is reused without being cleared, 
    this may lead to disclosure of sensitive data. JNI-based implementations are not affected. (CVE-2025-66566)
  
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://www.oracle.com/docs/tech/security-alerts/cpujan2026csaf.json");
  script_set_attribute(attribute:"see_also", value:"https://www.oracle.com/security-alerts/cpujan2026.html");
  script_set_attribute(attribute:"solution", value:
"Apply the appropriate patch according to the January 2026 Oracle Critical Patch Update advisory.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/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:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-66566");

  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:"2026/01/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/23");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:essbase");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("oracle_essbase_installed.nbin", "oracle_essbase_nix_installed.nbin");
  script_require_keys("Settings/ParanoidReport", "installed_sw/Oracle Essbase");

  exit(0);
}

include('vcf.inc');

if (report_paranoia < 2) audit(AUDIT_PARANOID);

var app_info = vcf::get_app_info(app:'Oracle Essbase');

var constraints = [
  { 'equal': '21.8.0.0.0', 'fixed_display' : '21.8.0.0.0 Patch 38713039 or later'}
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);