Linux Distros Unpatched Vulnerability : CVE-2026-91411

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

include('compat.inc');

if (description)
{
  script_id(370072);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/22");

  script_cve_id("CVE-2026-91411");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-91411");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of
    Oracle Java SE (component: JGSS). Supported versions that are affected are Oracle Java SE: 8u503,
    8u503-perf, 11.0.32.1; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition:
    21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via
    multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise
    Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or
    frequently repeatable crash (complete DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM
    Enterprise Edition as well as unauthorized update, insert or delete access to some of Oracle Java SE,
    Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can be
    exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the
    APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web
    Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from
    the internet) and rely on the Java sandbox for security. (CVE-2026-91411)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2026-91411");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:N/I:P/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-91411");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/10/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/21");

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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:java-1.8.0-ibm-headless");
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  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("ssh_get_info2.nasl", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
  script_require_ports("Host/OS/CentOS Linux-7", "Host/OS/CentOS Linux-8", "Host/OS/Red Hat Enterprise Linux-7", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9");

  exit(0);
}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "java-1.8.0-openjdk"},
          {"reference": "java-1.8.0-openjdk-accessibility"},
          {"reference": "java-1.8.0-openjdk-accessibility-debug"},
          {"reference": "java-1.8.0-openjdk-debug"},
          {"reference": "java-1.8.0-openjdk-demo"},
          {"reference": "java-1.8.0-openjdk-demo-debug"},
          {"reference": "java-1.8.0-openjdk-devel"},
          {"reference": "java-1.8.0-openjdk-devel-debug"},
          {"reference": "java-1.8.0-openjdk-headless"},
          {"reference": "java-1.8.0-openjdk-headless-debug"},
          {"reference": "java-1.8.0-openjdk-javadoc"},
          {"reference": "java-1.8.0-openjdk-javadoc-debug"},
          {"reference": "java-1.8.0-openjdk-javadoc-zip"},
          {"reference": "java-1.8.0-openjdk-javadoc-zip-debug"},
          {"reference": "java-1.8.0-openjdk-src"},
          {"reference": "java-1.8.0-openjdk-src-debug"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "java-1.8.0-openjdk"},
          {"reference": "java-1.8.0-openjdk-accessibility"},
          {"reference": "java-1.8.0-openjdk-accessibility-debug"},
          {"reference": "java-1.8.0-openjdk-debug"},
          {"reference": "java-1.8.0-openjdk-demo"},
          {"reference": "java-1.8.0-openjdk-demo-debug"},
          {"reference": "java-1.8.0-openjdk-devel"},
          {"reference": "java-1.8.0-openjdk-devel-debug"},
          {"reference": "java-1.8.0-openjdk-headless"},
          {"reference": "java-1.8.0-openjdk-headless-debug"},
          {"reference": "java-1.8.0-openjdk-javadoc"},
          {"reference": "java-1.8.0-openjdk-javadoc-debug"},
          {"reference": "java-1.8.0-openjdk-javadoc-zip"},
          {"reference": "java-1.8.0-openjdk-javadoc-zip-debug"},
          {"reference": "java-1.8.0-openjdk-src"},
          {"reference": "java-1.8.0-openjdk-src-debug"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "java-1.8.0-ibm"},
          {"reference": "java-1.8.0-ibm-demo"},
          {"reference": "java-1.8.0-ibm-devel"},
          {"reference": "java-1.8.0-ibm-headless"},
          {"reference": "java-1.8.0-ibm-jdbc"},
          {"reference": "java-1.8.0-ibm-plugin"},
          {"reference": "java-1.8.0-ibm-src"},
          {"reference": "java-1.8.0-ibm-webstart"},
          {"reference": "java-1.8.0-openjdk"},
          {"reference": "java-1.8.0-openjdk-accessibility"},
          {"reference": "java-1.8.0-openjdk-accessibility-fastdebug"},
          {"reference": "java-1.8.0-openjdk-accessibility-slowdebug"},
          {"reference": "java-1.8.0-openjdk-demo"},
          {"reference": "java-1.8.0-openjdk-demo-fastdebug"},
          {"reference": "java-1.8.0-openjdk-demo-slowdebug"},
          {"reference": "java-1.8.0-openjdk-devel"},
          {"reference": "java-1.8.0-openjdk-devel-fastdebug"},
          {"reference": "java-1.8.0-openjdk-devel-slowdebug"},
          {"reference": "java-1.8.0-openjdk-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless"},
          {"reference": "java-1.8.0-openjdk-headless-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless-slowdebug"},
          {"reference": "java-1.8.0-openjdk-javadoc"},
          {"reference": "java-1.8.0-openjdk-javadoc-zip"},
          {"reference": "java-1.8.0-openjdk-slowdebug"},
          {"reference": "java-1.8.0-openjdk-src"},
          {"reference": "java-1.8.0-openjdk-src-fastdebug"},
          {"reference": "java-1.8.0-openjdk-src-slowdebug"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "java-1.8.0-ibm"},
          {"reference": "java-1.8.0-ibm-demo"},
          {"reference": "java-1.8.0-ibm-devel"},
          {"reference": "java-1.8.0-ibm-headless"},
          {"reference": "java-1.8.0-ibm-jdbc"},
          {"reference": "java-1.8.0-ibm-plugin"},
          {"reference": "java-1.8.0-ibm-src"},
          {"reference": "java-1.8.0-ibm-webstart"},
          {"reference": "java-1.8.0-openjdk"},
          {"reference": "java-1.8.0-openjdk-accessibility"},
          {"reference": "java-1.8.0-openjdk-accessibility-fastdebug"},
          {"reference": "java-1.8.0-openjdk-accessibility-slowdebug"},
          {"reference": "java-1.8.0-openjdk-demo"},
          {"reference": "java-1.8.0-openjdk-demo-fastdebug"},
          {"reference": "java-1.8.0-openjdk-demo-slowdebug"},
          {"reference": "java-1.8.0-openjdk-devel"},
          {"reference": "java-1.8.0-openjdk-devel-fastdebug"},
          {"reference": "java-1.8.0-openjdk-devel-slowdebug"},
          {"reference": "java-1.8.0-openjdk-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless"},
          {"reference": "java-1.8.0-openjdk-headless-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless-slowdebug"},
          {"reference": "java-1.8.0-openjdk-javadoc"},
          {"reference": "java-1.8.0-openjdk-javadoc-zip"},
          {"reference": "java-1.8.0-openjdk-slowdebug"},
          {"reference": "java-1.8.0-openjdk-src"},
          {"reference": "java-1.8.0-openjdk-src-fastdebug"},
          {"reference": "java-1.8.0-openjdk-src-slowdebug"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "java-1.8.0-openjdk"},
          {"reference": "java-1.8.0-openjdk-demo"},
          {"reference": "java-1.8.0-openjdk-demo-fastdebug"},
          {"reference": "java-1.8.0-openjdk-demo-slowdebug"},
          {"reference": "java-1.8.0-openjdk-devel"},
          {"reference": "java-1.8.0-openjdk-devel-fastdebug"},
          {"reference": "java-1.8.0-openjdk-devel-slowdebug"},
          {"reference": "java-1.8.0-openjdk-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless"},
          {"reference": "java-1.8.0-openjdk-headless-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless-slowdebug"},
          {"reference": "java-1.8.0-openjdk-javadoc"},
          {"reference": "java-1.8.0-openjdk-javadoc-zip"},
          {"reference": "java-1.8.0-openjdk-slowdebug"},
          {"reference": "java-1.8.0-openjdk-src"},
          {"reference": "java-1.8.0-openjdk-src-fastdebug"},
          {"reference": "java-1.8.0-openjdk-src-slowdebug"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
    var third_party_vendors = distro_constraints_values['third_party'];
    if (!empty_or_null(third_party_vendors)) {
        var vendor;
        foreach vendor (third_party_vendors) {
            if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
        }
    }
}

var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}