Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 : OpenJDK 21 vulnerabilities (USN-7668-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-7668-1. 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(242885);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/07/28");

  script_cve_id(
    "CVE-2025-30749",
    "CVE-2025-30754",
    "CVE-2025-50059",
    "CVE-2025-50106"
  );
  script_xref(name:"USN", value:"7668-1");

  script_name(english:"Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 : OpenJDK 21 vulnerabilities (USN-7668-1)");

  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 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-7668-1 advisory.

    It was discovered that the 2D component of OpenJDK 21 did not properly manage memory under certain
    circumstances. An attacker could possibly use this issue to cause a denial of service or execute arbitrary
    code. (CVE-2025-30749, CVE-2025-50106)

    Mashroor Hasan Bhuiyan discovered that the JSSE component of OpenJDK 21 did not properly manage TLS 1.3
    handshakes under certain circumstances. An attacker could possibly use this issue to obtain sensitive
    information. (CVE-2025-30754)

    Martin van Wingerden and Violeta Georgieva of Broadcom discovered that the Networking component of OpenJDK
    24 did not properly manage network connections under certain circumstances. An attacker could possibly use
    this issue to obtain sensitive information. (CVE-2025-50059)

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-7668-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:C/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:H/PR:N/UI:N/S:U/C:H/I:H/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-2025-50106");

  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:"2025/07/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/07/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/07/28");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-21-demo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-21-jdk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-21-jdk-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-21-jre");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-21-jre-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-21-jre-zero");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-21-source");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-21-testsupport");
  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) 2025 Canonical, Inc. / NASL script (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "ubuntu_pro_sub_detect.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 (! ('20.04' >< os_release || '22.04' >< os_release || '24.04' >< os_release || '25.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04 / 22.04 / 24.04 / 25.04', '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 ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);

var pro_caveat_needed = FALSE;

var pkgs = [
    {'osver': '20.04', 'pkgname': 'openjdk-21-demo', 'pkgver': '21.0.8+9~us1-0ubuntu1~20.04.1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'openjdk-21-jdk', 'pkgver': '21.0.8+9~us1-0ubuntu1~20.04.1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'openjdk-21-jdk-headless', 'pkgver': '21.0.8+9~us1-0ubuntu1~20.04.1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'openjdk-21-jre', 'pkgver': '21.0.8+9~us1-0ubuntu1~20.04.1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'openjdk-21-jre-headless', 'pkgver': '21.0.8+9~us1-0ubuntu1~20.04.1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'openjdk-21-jre-zero', 'pkgver': '21.0.8+9~us1-0ubuntu1~20.04.1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'openjdk-21-source', 'pkgver': '21.0.8+9~us1-0ubuntu1~20.04.1', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'openjdk-21-testsupport', 'pkgver': '21.0.8+9~us1-0ubuntu1~20.04.1', 'ubuntu_pro': TRUE},
    {'osver': '22.04', 'pkgname': 'openjdk-21-demo', 'pkgver': '21.0.8+9~us1-0ubuntu1~22.04.1', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'openjdk-21-jdk', 'pkgver': '21.0.8+9~us1-0ubuntu1~22.04.1', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'openjdk-21-jdk-headless', 'pkgver': '21.0.8+9~us1-0ubuntu1~22.04.1', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'openjdk-21-jre', 'pkgver': '21.0.8+9~us1-0ubuntu1~22.04.1', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'openjdk-21-jre-headless', 'pkgver': '21.0.8+9~us1-0ubuntu1~22.04.1', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'openjdk-21-jre-zero', 'pkgver': '21.0.8+9~us1-0ubuntu1~22.04.1', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'openjdk-21-source', 'pkgver': '21.0.8+9~us1-0ubuntu1~22.04.1', 'ubuntu_pro': FALSE},
    {'osver': '22.04', 'pkgname': 'openjdk-21-testsupport', 'pkgver': '21.0.8+9~us1-0ubuntu1~22.04.1', 'ubuntu_pro': FALSE},
    {'osver': '24.04', 'pkgname': 'openjdk-21-demo', 'pkgver': '21.0.8+9~us1-0ubuntu1~24.04.1', 'ubuntu_pro': FALSE},
    {'osver': '24.04', 'pkgname': 'openjdk-21-jdk', 'pkgver': '21.0.8+9~us1-0ubuntu1~24.04.1', 'ubuntu_pro': FALSE},
    {'osver': '24.04', 'pkgname': 'openjdk-21-jdk-headless', 'pkgver': '21.0.8+9~us1-0ubuntu1~24.04.1', 'ubuntu_pro': FALSE},
    {'osver': '24.04', 'pkgname': 'openjdk-21-jre', 'pkgver': '21.0.8+9~us1-0ubuntu1~24.04.1', 'ubuntu_pro': FALSE},
    {'osver': '24.04', 'pkgname': 'openjdk-21-jre-headless', 'pkgver': '21.0.8+9~us1-0ubuntu1~24.04.1', 'ubuntu_pro': FALSE},
    {'osver': '24.04', 'pkgname': 'openjdk-21-jre-zero', 'pkgver': '21.0.8+9~us1-0ubuntu1~24.04.1', 'ubuntu_pro': FALSE},
    {'osver': '24.04', 'pkgname': 'openjdk-21-source', 'pkgver': '21.0.8+9~us1-0ubuntu1~24.04.1', 'ubuntu_pro': FALSE},
    {'osver': '24.04', 'pkgname': 'openjdk-21-testsupport', 'pkgver': '21.0.8+9~us1-0ubuntu1~24.04.1', 'ubuntu_pro': FALSE},
    {'osver': '25.04', 'pkgname': 'openjdk-21-demo', 'pkgver': '21.0.8+9~us1-0ubuntu1~25.04.1', 'ubuntu_pro': FALSE},
    {'osver': '25.04', 'pkgname': 'openjdk-21-jdk', 'pkgver': '21.0.8+9~us1-0ubuntu1~25.04.1', 'ubuntu_pro': FALSE},
    {'osver': '25.04', 'pkgname': 'openjdk-21-jdk-headless', 'pkgver': '21.0.8+9~us1-0ubuntu1~25.04.1', 'ubuntu_pro': FALSE},
    {'osver': '25.04', 'pkgname': 'openjdk-21-jre', 'pkgver': '21.0.8+9~us1-0ubuntu1~25.04.1', 'ubuntu_pro': FALSE},
    {'osver': '25.04', 'pkgname': 'openjdk-21-jre-headless', 'pkgver': '21.0.8+9~us1-0ubuntu1~25.04.1', 'ubuntu_pro': FALSE},
    {'osver': '25.04', 'pkgname': 'openjdk-21-jre-zero', 'pkgver': '21.0.8+9~us1-0ubuntu1~25.04.1', 'ubuntu_pro': FALSE},
    {'osver': '25.04', 'pkgname': 'openjdk-21-source', 'pkgver': '21.0.8+9~us1-0ubuntu1~25.04.1', 'ubuntu_pro': FALSE},
    {'osver': '25.04', 'pkgname': 'openjdk-21-testsupport', 'pkgver': '21.0.8+9~us1-0ubuntu1~25.04.1', 'ubuntu_pro': FALSE}
];

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

if (flag)
{
  var extra = '';
  if (pro_caveat_needed) {
    extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
    extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
    extra += 'require an Ubuntu Pro subscription.\n\n';
  }
  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-21-demo / openjdk-21-jdk / openjdk-21-jdk-headless / etc');
}