Ubuntu 25.10 / 26.04 LTS : CRaC JDK 17 vulnerabilities (USN-8332-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8332-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(318260);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/02");

  script_cve_id(
    "CVE-2026-22007",
    "CVE-2026-22013",
    "CVE-2026-22016",
    "CVE-2026-22018",
    "CVE-2026-22021",
    "CVE-2026-23865",
    "CVE-2026-34268",
    "CVE-2026-34282"
  );
  script_xref(name:"USN", value:"8332-1");

  script_name(english:"Ubuntu 25.10 / 26.04 LTS : CRaC JDK 17 vulnerabilities (USN-8332-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-8332-1 advisory.

    Thomas Beckers discovered that the JAXP component of CRaC JDK 17 did not correctly authenticate certain
    APIs. A remote unauthenticated attacker could possibly use this issue to gain unauthorized access to
    sensitive information. (CVE-2026-22016)

    It was discovered that the Networking component of CRaC JDK 17 did not correctly authenticate certain
    APIs. A remote unauthenticated attacker could possibly use this issue to cause a denial of service.
    (CVE-2026-34282)

    It was discovered that the JSSE component of CRaC JDK 17 did not correctly authenticate certain APIs. A
    remote unauthenticated attacker could possibly use this issue to cause a denial of service.
    (CVE-2026-22021)

    It was discovered that the JGSS component of CRaC JDK 17 did not correctly authenticate certain APIs. A
    remote attacker could possibly use this issue to obtain sensitive information.

    (CVE-2026-22013)

    It was discovered that the 2D component of CRaC JDK 17 did not correctly handle certain integer
    arithmetic. If a user or automated system were tricked into opening a specially crafted file, an attacker
    could possibly use this issue to leak sensitive information. (CVE-2026-23865)

    It was discovered that the Libraries component of CRaC JDK 17 did not correctly authenticate certain APIs.
    A remote unauthenticated attacker could possibly use this issue to cause a denial of service.
    (CVE-2026-22018)

    Ken Pyle discovered that the Security component of CRaC JDK 17 did not correctly authenticate certain
    APIs. A local attacker could possibly use this issue to leak sensitive information. (CVE-2026-22007,
    CVE-2026-34268)

    In addition to security fixes, the updated packages contain bug fixes, new features, and possibly
    incompatible changes.

    Please see the following for more information:
    https://openjdk.org/groups/vulnerability/advisories/2026-04-21

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-8332-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  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:"cvss_score_source", value:"CVE-2026-22016");

  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:"2026/03/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:26.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-17-crac-demo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-17-crac-jdk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-17-crac-jdk-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-17-crac-jre");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-17-crac-jre-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-17-crac-jre-zero");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-17-crac-source");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2026 Canonical, Inc. / NASL script (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('25.10' >< os_release || '26.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 25.10 / 26.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '25.10', 'pkgname': 'openjdk-17-crac-demo', 'pkgver': '17.0.19+10-0ubuntu1~25.10.1'},
    {'osver': '25.10', 'pkgname': 'openjdk-17-crac-jdk', 'pkgver': '17.0.19+10-0ubuntu1~25.10.1'},
    {'osver': '25.10', 'pkgname': 'openjdk-17-crac-jdk-headless', 'pkgver': '17.0.19+10-0ubuntu1~25.10.1'},
    {'osver': '25.10', 'pkgname': 'openjdk-17-crac-jre', 'pkgver': '17.0.19+10-0ubuntu1~25.10.1'},
    {'osver': '25.10', 'pkgname': 'openjdk-17-crac-jre-headless', 'pkgver': '17.0.19+10-0ubuntu1~25.10.1'},
    {'osver': '25.10', 'pkgname': 'openjdk-17-crac-jre-zero', 'pkgver': '17.0.19+10-0ubuntu1~25.10.1'},
    {'osver': '25.10', 'pkgname': 'openjdk-17-crac-source', 'pkgver': '17.0.19+10-0ubuntu1~25.10.1'},
    {'osver': '26.04', 'pkgname': 'openjdk-17-crac-demo', 'pkgver': '17.0.19+10-0ubuntu1~26.04.1'},
    {'osver': '26.04', 'pkgname': 'openjdk-17-crac-jdk', 'pkgver': '17.0.19+10-0ubuntu1~26.04.1'},
    {'osver': '26.04', 'pkgname': 'openjdk-17-crac-jdk-headless', 'pkgver': '17.0.19+10-0ubuntu1~26.04.1'},
    {'osver': '26.04', 'pkgname': 'openjdk-17-crac-jre', 'pkgver': '17.0.19+10-0ubuntu1~26.04.1'},
    {'osver': '26.04', 'pkgname': 'openjdk-17-crac-jre-headless', 'pkgver': '17.0.19+10-0ubuntu1~26.04.1'},
    {'osver': '26.04', 'pkgname': 'openjdk-17-crac-jre-zero', 'pkgver': '17.0.19+10-0ubuntu1~26.04.1'},
    {'osver': '26.04', 'pkgname': 'openjdk-17-crac-source', 'pkgver': '17.0.19+10-0ubuntu1~26.04.1'}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  if (osver && pkgname && pkgver) {
    if (deb_check(release:osver, prefix:pkgname, reference:pkgver, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'openjdk-17-crac-demo / openjdk-17-crac-jdk / etc');
}