Oracle Java SE Denial of Service Vulnerability (August 2026 CSPU)

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

include('compat.inc');

if (description)
{
  script_id(338353);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/20");

  script_cve_id("CVE-2026-70906");

  script_name(english:"Oracle Java SE Denial of Service Vulnerability (August 2026 CSPU)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"The 25.0.4 or 26.0.2 version of Java installed on the remote host is affected by a denial of service vulnerability
as referenced in the August 2026 CSPU advisory.

  - Vulnerability in the Oracle Java SE product of Oracle Java SE (component: 2D). Supported versions that are
    affected are Oracle Java SE: 25.0.4, 26.0.2. Easily exploitable vulnerability allows unauthenticated attacker
    with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this
    vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS)
    of Oracle Java SE. (CVE-2026-70906)

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/cspuaug2026csaf.json");
  script_set_attribute(attribute:"see_also", value:"https://www.oracle.com/security-alerts/cspuaug2026.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Java SE 25.0.4.1 or 26.0.2.1 as appropriate per the August 2026 Oracle Critical Security Patch Update
(CSPU) advisory.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-70906");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/08/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:jre");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:jdk");
  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("sun_java_jre_installed.nasl", "sun_java_jre_installed_unix.nasl");
  script_require_keys("installed_sw/Java");

  exit(0);
}

include('vcf_extras.inc');

var app_list = ['Oracle Java'];

# The Aug 2026 CSPU fixes 25.0.4 and 26.0.2 with a 4th-segment patch release (25.0.4.1 /
# 26.0.2.1), so request 4 version segments to distinguish patched builds from the GA builds.
var app_info = vcf::java::get_app_info(app:app_list, max_segs:4);

var constraints = [
  { 'min_version' : '25.0.0', 'fixed_version' : '25.0.4.1', 'fixed_display' : 'Upgrade to version 25.0.4.1 or greater' },
  { 'min_version' : '26.0.0', 'fixed_version' : '26.0.2.1', 'fixed_display' : 'Upgrade to version 26.0.2.1 or greater' }
];

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