EulerOS 2.0 SP15 : systemd (EulerOS-SA-2026-2469)

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

include('compat.inc');

if (description)
{
  script_id(323202);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/27");

  script_cve_id("CVE-2026-4105", "CVE-2026-29111", "CVE-2026-40226");

  script_name(english:"EulerOS 2.0 SP15 : systemd (EulerOS-SA-2026-2469)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the systemd packages installed, the EulerOS installation on the remote host is affected by
the following vulnerabilities :

    In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional
    config file.(CVE-2026-40226)

    A flaw was found in systemd. The systemd-machined service contains an Improper Access Control
    vulnerability due to insufficient validation of the class parameter in the RegisterMachine D-Bus (Desktop
    Bus) method. A local unprivileged user can exploit this by attempting to register a machine with a
    specific class value, which may leave behind a usable, attacker-controlled machine object. This allows the
    attacker to invoke methods on the privileged object, leading to the execution of arbitrary commands with
    root privileges on the host system.(CVE-2026-4105)

    systemd, a system and service manager, (as PID 1) hits an assert and freezes execution when an
    unprivileged IPC API call is made with spurious data. On version v249 and older the effect is not an
    assert, but stack overwriting, with the attacker controlled content. From version v250 and newer this is
    not possible as the safety check causes an assert instead. This IPC call was added in v239, so versions
    older than that are not affected. Versions 260-rc1, 259.2, 258.5, and 257.11 contain patches. No known
    workarounds are available.(CVE-2026-29111)

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

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2026-2469
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4280ac16");
  script_set_attribute(attribute:"solution", value:
"Update the affected systemd packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/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:L/AC:H/PR:L/UI:R/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-2026-4105");

  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:"2026/03/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-container");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-help");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-networkd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-nspawn");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-pam");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-resolved");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-timesyncd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-udev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-udev-compat");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei 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/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  exit(0);
}

include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var _release = get_kb_item("Host/EulerOS/release");
if (isnull(_release) || _release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
var uvp = get_kb_item("Host/EulerOS/uvp_version");
if (_release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP15");

var sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(15)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP15");

if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP15", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu && "x86" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "x86" >!< cpu) audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

var flag = 0;

var pkgs = [
  "systemd-255-34.h21510.34.eulerosv2r15",
  "systemd-container-255-34.h21510.34.eulerosv2r15",
  "systemd-devel-255-34.h21510.34.eulerosv2r15",
  "systemd-help-255-34.h21510.34.eulerosv2r15",
  "systemd-libs-255-34.h21510.34.eulerosv2r15",
  "systemd-networkd-255-34.h21510.34.eulerosv2r15",
  "systemd-nspawn-255-34.h21510.34.eulerosv2r15",
  "systemd-pam-255-34.h21510.34.eulerosv2r15",
  "systemd-resolved-255-34.h21510.34.eulerosv2r15",
  "systemd-timesyncd-255-34.h21510.34.eulerosv2r15",
  "systemd-udev-255-34.h21510.34.eulerosv2r15",
  "systemd-udev-compat-255-34.h21510.34.eulerosv2r15"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"15", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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");
}