Ubuntu 25.10 : CRaC JDK 25 vulnerabilities (USN-7902-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-7902-1. 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(277076);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/02");

  script_cve_id("CVE-2025-53057", "CVE-2025-53066", "CVE-2025-61748");
  script_xref(name:"USN", value:"7902-1");

  script_name(english:"Ubuntu 25.10 : CRaC JDK 25 vulnerabilities (USN-7902-1)");

  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 host has packages installed that are affected by multiple vulnerabilities as referenced in the
USN-7902-1 advisory.

    Jinfeng Guo discovered that the Security component of CRaC JDK 25 did not correctly handle certain
    representations of encoded strings. An unauthenticated remote attacker could possibly use this issue to
    modify files or leak sensitive information. (CVE-2025-53057)

    Darius Bohni discovered that the JAXP component of CRaC JDK 25 was vulnerable to a XML External Entity
    (XEE) attack. An unauthenticated remote attacker could possibly use this issue to modify files or leak
    sensitive information. (CVE-2025-53066)

    Yakov Shafranovich discovered that the Libraries component of CRaC JDK 25 contained an issue where certain
    Strings built with StringBuilder returned an incorrect result for String.equals() checks. An
    unauthenticated remote attacker could possibly use this issue to update, insert, or delete accessible
    data. (CVE-2025-61748)

    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/2025-10-21

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-7902-1");
  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-2025-53066");

  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:"2025/10/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/12/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/12/02");

  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:"p-cpe:/a:canonical:ubuntu_linux:openjdk-25-crac-demo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-25-crac-jdk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-25-crac-jdk-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-25-crac-jre");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-25-crac-jre-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-25-crac-jre-zero");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-25-crac-source");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-25-crac-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");
  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)) audit(AUDIT_OS_NOT, 'Ubuntu 25.10', '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-25-crac-demo', 'pkgver': '25.0.1+8-0ubuntu1~25.10'},
    {'osver': '25.10', 'pkgname': 'openjdk-25-crac-jdk', 'pkgver': '25.0.1+8-0ubuntu1~25.10'},
    {'osver': '25.10', 'pkgname': 'openjdk-25-crac-jdk-headless', 'pkgver': '25.0.1+8-0ubuntu1~25.10'},
    {'osver': '25.10', 'pkgname': 'openjdk-25-crac-jre', 'pkgver': '25.0.1+8-0ubuntu1~25.10'},
    {'osver': '25.10', 'pkgname': 'openjdk-25-crac-jre-headless', 'pkgver': '25.0.1+8-0ubuntu1~25.10'},
    {'osver': '25.10', 'pkgname': 'openjdk-25-crac-jre-zero', 'pkgver': '25.0.1+8-0ubuntu1~25.10'},
    {'osver': '25.10', 'pkgname': 'openjdk-25-crac-source', 'pkgver': '25.0.1+8-0ubuntu1~25.10'},
    {'osver': '25.10', 'pkgname': 'openjdk-25-crac-testsupport', 'pkgver': '25.0.1+8-0ubuntu1~25.10'}
];

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-25-crac-demo / openjdk-25-crac-jdk / etc');
}