Oracle Linux 10 : systemd (ELSA-2026-18153)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2026-18153.
##

include('compat.inc');

if (description)
{
  script_id(328018);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/20");

  script_cve_id("CVE-2025-4598");

  script_name(english:"Oracle Linux 10 : systemd (ELSA-2026-18153)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the
ELSA-2026-18153 advisory.

    [257-23.0.1.el10_2.2]
    - Fix detection of Oracle Virtualization or BM envs [Orabug: 37531877]
    - Avoid udevadm warnings when using udev valid configs [Orabug: 37503197]
    - allow dm remove ioctl to co-operate with UEK3 [Orabug: 18467469]
    - set 'RemoveIPC=no' in logind.conf as default [Orabug: 22224874]
    - Fix missing netdev for iscsi entry in fstab [Orabug: 25897792]
    - udev rules: fix memory hot add and remove [Orabug: 31310273]
    - Disable unprivileged BPF by default [Orabug: 32870980]
    - Remove upstream references [Orabug: 33995357]
    - Wait for an extra configurable time before udevd kills a worker [Orabug: 36017407]
    - Removed unneeded patches from the systemd.spec
    - 1004-orabug34272490-0001-core-device-ignore-DEVICE_FOUND_UDEV-bit-on-switchin.patch [Orabug: 34272490]
    - 1005-orabug34272490-0002-core-device-drop-unnecessary-condition.patch [Orabug: 34272490]
    - 1006-orabug34467234-shutdown-get-only-active-md-arrays.patch [Orabug: 34467234]
    - 1007-orabug34868110-pstore-fixes-for-dmesg.txt-reconstruction.patch [Orabug: 34868110]
    - 1008-path-drop-IN_ATTRIB-from-parent-directory-watches.patch [Orabug: 36780432]

    [257-23.2]
    - nspawn: apply BindUser/Ephemeral from settings file only if trusted (RHEL-163873)
    - nspawn: normalize pivot_root paths (RHEL-163873)
    - udev: check for invalid chars in various fields received from the kernel (RHEL-163879)
    - udev: ensure there is space for trailing NUL before calling sprintf (RHEL-163879)
    - udev: ensure tag parsing stays within bounds (RHEL-163879)
    - udev: fix review mixup (RHEL-163879)
    - udev/scsi-id: check for invalid chars in various fields received from the kernel (RHEL-163879)
    - udev-builtin-net-id: print cescaped bad attributes (RHEL-163879)

    [257-23.1]
    - ci: re-enable bpf-framework option for build and unit test jobs (RHEL-152080)
    - ci: add bpftool workaround to codeql job too (RHEL-152080)
    - ci: fix workaround about bpftool for codeql (RHEL-152080)
    - ci: add bpftool workaround to coverity too (RHEL-152080)
    - path-util: add flavour of path_startswith() that leaves a leading slash in place (RHEL-152080)
    - cgroup: port some code over to path_startswith_full() (RHEL-152080)
    - path-util: invert PATH_STARTSWITH_ACCEPT_DOT_DOT flag (RHEL-152080)
    - sd-json: fix off-by-one issue when updating parent for array elements (RHEL-152080)
    - core/cgroup: avoid one unnecessary strjoina() (RHEL-152080)
    - core: validate input cgroup path more prudently (RHEL-152080)

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

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/ELSA-2026-18153.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:P/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-4598");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/05/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:10:2:baseos_patch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd-boot-unsigned");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd-container");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd-journal-remote");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd-oomd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd-pam");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd-resolved");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd-rpm-macros");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd-udev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:systemd-ukify");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle Linux 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_info.nasl");
  script_require_keys("Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  exit(0);
}


include('rpm2.inc');

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) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_product)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
if (! preg(pattern:"^10([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Oracle Linux 10.x', 'Oracle Linux ' + os_version);

if (!get_kb_item('Host/RedHat/rpm-list')) 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$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);

var constraints = [
  {
    'release': '10',
    'pkgs': [
      {'reference':'systemd-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-boot-unsigned-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-container-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-devel-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-journal-remote-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-libs-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-oomd-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-pam-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-resolved-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-rpm-macros-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-udev-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-ukify-257-23.0.1.el10_2.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-boot-unsigned-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-container-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-devel-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-journal-remote-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-libs-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-oomd-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-pam-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-resolved-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-rpm-macros-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-udev-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'systemd-ukify-257-23.0.1.el10_2.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

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_NOTE,
      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, 'systemd / systemd-boot-unsigned / systemd-container / etc');
}