Debian dla-4504 : libnss-libvirt - 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-4504. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(303208);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/20");

  script_name(english:"Debian dla-4504 : libnss-libvirt - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4504
advisory.

    - -----------------------------------------------------------------------
    Debian LTS Advisory DLA-4504-1              [email protected]
    https://www.debian.org/lts/security/                      Utkarsh Gupta
    March 20, 2026                              https://wiki.debian.org/LTS
    - -----------------------------------------------------------------------

    Package        : libvirt
    Version        : 7.0.0-3+deb11u4
    Debian Bug     : 1124549

    The latest update to src:linux for bullseye (via DLA 4404-1) caused a
    regression for libvirt (debian bug #1124549). This is due to libvirt
    passing a previously undefined flag to netlink that is now checked
    and rejected. This was fixed in libvirt 7.1.0 (upstream commit
    81334002340b) so is not present in later Debian releases.

    For Debian 11 bullseye, this problem has been fixed in version
    7.0.0-3+deb11u4.

    We recommend that you upgrade your libvirt packages.

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

    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 this issue 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/libvirt");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/libvirt");
  script_set_attribute(attribute:"solution", value:
"Upgrade the libnss-libvirt packages.");
  script_set_attribute(attribute:"risk_factor", value:"High");

  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:"2026/03/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libnss-libvirt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-config-network");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-config-nwfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-driver-lxc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-driver-qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-driver-storage-gluster");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-driver-storage-iscsi-direct");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-driver-storage-rbd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-driver-storage-zfs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-driver-vbox");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-driver-xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-system");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-system-systemd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-daemon-system-sysv");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-login-shell");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-sanlock");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt-wireshark");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  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:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', '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': '11.0', 'prefix': 'libnss-libvirt', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-clients', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-config-network', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-config-nwfilter', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-driver-lxc', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-driver-qemu', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-driver-storage-gluster', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-driver-storage-iscsi-direct', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-driver-storage-rbd', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-driver-storage-zfs', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-driver-vbox', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-driver-xen', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-system', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-system-systemd', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-daemon-system-sysv', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-dev', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-doc', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-login-shell', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-sanlock', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt-wireshark', 'reference': '7.0.0-3+deb11u4'},
    {'release': '11.0', 'prefix': 'libvirt0', 'reference': '7.0.0-3+deb11u4'}
];

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, 'libnss-libvirt / libvirt-clients / libvirt-daemon / etc');
}