CentOS Linux 7 [TuxCare] Security Update: java-1.8.0-openjdk / java-1.8.0-openjdk-accessibility / etc (CENTOS7:CLSA-2026:1770119166)

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

include('compat.inc');

if (description)
{
  script_id(352286);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/30");

  script_cve_id("CVE-2026-21945");
  script_xref(name:"CLSA", value:"2026:1770119166");

  script_name(english:"CentOS Linux 7 [TuxCare] Security Update: java-1.8.0-openjdk / java-1.8.0-openjdk-accessibility / etc (CENTOS7:CLSA-2026:1770119166)");

  script_set_attribute(attribute:"synopsis", value:
"The CentOS Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare
CENTOS7:CLSA-2026:1770119166 advisory.

  - Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of
    Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 8u471,
    8u471-b50, 8u471-perf, 11.0.29, 17.0.17, 21.0.9, 25.0.1; Oracle GraalVM for JDK: 17.0.17 and 21.0.9;
    Oracle GraalVM Enterprise Edition: 21.3.16. Easily exploitable 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. Note: This vulnerability 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. This vulnerability does not apply to Java deployments, typically in servers, that load and run
    only trusted code (e.g., code installed by an administrator). (CVE-2026-21945)

  - A Blind Server-Side Request Forgery (SSRF) vulnerability exists in Oracle Java 21. The vulnerability,
    which leads to Denial of Service (DoS), is present in the x509 certificate path validation mechanism when
    the non-default system property com.sun.security.enableAIAcaIssuers is set to true. (CVE-2026-21945)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://security.tuxcare.com/csaf/v2/els_os/centos7els/advisories/2026/clsa-2026_1770119166.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a1c3eb28");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2026:1770119166");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory CENTOS7:CLSA-2026:1770119166.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:U/C:N/I:N/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-2026-21945");

  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_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/01/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CentOS Local Security Checks");

  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");
  script_require_keys("Host/OS/extended-third-party", "Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");

  exit(0);
}
include('rpm2.inc');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (empty_or_null(third_party_support) || third_party_support != 'TuxCare') exit(0, 'TuxCare support not enabled.');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'CentOS Linux' >!< os_product) audit(AUDIT_OS_NOT, 'CentOS Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS Linux');
if (! preg(pattern:"^7([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'CentOS Linux 7', 'CentOS Linux ' + os_version);

if (!get_kb_item('Host/CentOS/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'CentOS Linux', cpu);


var constraints = [
  {
    'release': '7',
    'pkgs': [
      {'reference':'java-1.8.0-openjdk-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'i686', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-accessibility-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'i686', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-accessibility-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-accessibility-debug-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-debug-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-demo-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'i686', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-demo-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-demo-debug-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-devel-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'i686', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-devel-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-devel-debug-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-headless-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'i686', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-headless-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-headless-debug-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-javadoc-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-javadoc-debug-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-javadoc-zip-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-javadoc-zip-debug-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-src-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'i686', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-src-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'java-1.8.0-openjdk-src-debug-1.8.0.482.b03-1.el7_9.tuxcare.els1', 'cpu':'x86_64', 'el_string':'el7_9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}


if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'java-1.8.0-openjdk / java-1.8.0-openjdk-accessibility / etc');
}