Debian dla-4818 : libxen-dev - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-4818. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(362913);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/04");

  script_cve_id(
    "CVE-2025-10263",
    "CVE-2025-54505",
    "CVE-2025-54518",
    "CVE-2025-58150",
    "CVE-2026-23553",
    "CVE-2026-23554",
    "CVE-2026-23556",
    "CVE-2026-23557",
    "CVE-2026-23558",
    "CVE-2026-42487",
    "CVE-2026-42488",
    "CVE-2026-42489",
    "CVE-2026-42490",
    "CVE-2026-42493",
    "CVE-2026-42494",
    "CVE-2026-42495",
    "CVE-2026-62423",
    "CVE-2026-62424",
    "CVE-2026-62425",
    "CVE-2026-62426",
    "CVE-2026-62427",
    "CVE-2026-62428",
    "CVE-2026-62429",
    "CVE-2026-62430",
    "CVE-2026-62431",
    "CVE-2026-62432",
    "CVE-2026-62433",
    "CVE-2026-62434",
    "CVE-2026-62435",
    "CVE-2026-62436"
  );

  script_name(english:"Debian dla-4818 : libxen-dev - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4818 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4818-1                [email protected]
    https://www.debian.org/lts/security/                  Hans van Kranenburg
    October 04, 2026                              https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : xen
    Version        : 4.17.7-0+deb12u1
    CVE ID         : CVE-2025-10263 CVE-2025-54505 CVE-2025-54518 CVE-2025-58150
                     CVE-2026-23553 CVE-2026-23554 CVE-2026-23556 CVE-2026-23557
                     CVE-2026-23558 CVE-2026-42487 CVE-2026-42488 CVE-2026-42489
                     CVE-2026-42490 CVE-2026-42493 CVE-2026-42494 CVE-2026-42495
                     CVE-2026-62423 CVE-2026-62424 CVE-2026-62425 CVE-2026-62426
                     CVE-2026-62427 CVE-2026-62428 CVE-2026-62429 CVE-2026-62430
                     CVE-2026-62431 CVE-2026-62432 CVE-2026-62433 CVE-2026-62434
                     CVE-2026-62435 CVE-2026-62436

    Multiple vulnerabilities have been discovered in the Xen hypervisor,
    which could result in privilege escalation, information disclosure or
    denial of service.

    For Debian 12 bookworm, these problems have been fixed in version
    4.17.7-0+deb12u1.

    We recommend that you upgrade your xen packages.

    For the detailed security status of xen please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/xen

    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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://security-tracker.debian.org/tracker/source-package/xen");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-10263");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-54505");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-54518");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-58150");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-23553");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-23554");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-23556");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-23557");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-23558");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-42487");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-42488");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-42489");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-42490");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-42493");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-42494");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-42495");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62423");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62424");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62425");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62426");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62427");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62428");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62429");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62430");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62431");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62432");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62433");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62434");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62435");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62436");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/xen");
  script_set_attribute(attribute:"solution", value:
"Upgrade the libxen-dev packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/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:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
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  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-10263");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-62427");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-23556");

  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:"2025/07/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxen-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxencall1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxendevicemodel1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxenevtchn1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxenforeignmemory1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxengnttab1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxenhypfs1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxenmisc4.17");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxenstore4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxentoolcore1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxentoollog1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-hypervisor-4.17-amd64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-hypervisor-4.17-amd64-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-hypervisor-4.17-arm64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-hypervisor-4.17-arm64-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-hypervisor-4.17-armhf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-hypervisor-4.17-armhf-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-hypervisor-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-system-amd64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-system-arm64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-system-armhf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-utils-4.17");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-utils-4.17-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-utils-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xenstore-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian 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/Debian/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);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(12)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 12.0', 'Debian ' + debian_release);
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, 'Debian', cpu);

var pkgs = [
    {'release': '12.0', 'prefix': 'libxen-dev', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libxencall1', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libxendevicemodel1', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libxenevtchn1', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libxenforeignmemory1', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libxengnttab1', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libxenhypfs1', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libxenmisc4.17', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libxenstore4', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libxentoolcore1', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'libxentoollog1', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-doc', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-hypervisor-4.17-amd64', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-hypervisor-4.17-amd64-dbg', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-hypervisor-4.17-arm64', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-hypervisor-4.17-arm64-dbg', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-hypervisor-4.17-armhf', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-hypervisor-4.17-armhf-dbg', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-hypervisor-common', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-system-amd64', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-system-arm64', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-system-armhf', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-utils-4.17', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-utils-4.17-dbg', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xen-utils-common', 'reference': '4.17.7-0+deb12u1'},
    {'release': '12.0', 'prefix': 'xenstore-utils', 'reference': '4.17.7-0+deb12u1'}
];

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

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libxen-dev / libxencall1 / libxendevicemodel1 / libxenevtchn1 / etc');
}