Ubuntu 24.04 LTS. : libvirt vulnerabilities (USN-6734-2)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6734-2. 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(194729);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/29");

  script_cve_id("CVE-2024-1441", "CVE-2024-2494");
  script_xref(name:"IAVA", value:"2024-A-0184");
  script_xref(name:"USN", value:"6734-2");

  script_name(english:"Ubuntu 24.04 LTS. : libvirt vulnerabilities (USN-6734-2)");

  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 24.04 LTS. host has packages installed that are affected by multiple vulnerabilities as referenced in
the USN-6734-2 advisory.

  - An off-by-one error flaw was found in the udevListInterfacesByStatus() function in libvirt when the number
    of interfaces exceeds the size of the `names` array. This issue can be reproduced by sending specially
    crafted data to the libvirt daemon, allowing an unprivileged client to perform a denial of service attack
    by causing the libvirt daemon to crash. (CVE-2024-1441)

  - A flaw was found in the RPC library APIs of libvirt. The RPC server deserialization code allocates memory
    for arrays before the non-negative length check is performed by the C API entry points. Passing a negative
    length to the g_new0 function results in a crash due to the negative length being treated as a huge
    positive number. This flaw allows a local, unprivileged user to perform a denial of service attack by
    causing the libvirt daemon to crash. (CVE-2024-2494)

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-6734-2");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:N/I:N/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:L/PR:N/UI:N/S:U/C:N/I:N/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-2024-2494");

  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:"2024/03/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/04/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/29");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts.");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libnss-libvirt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-clients-qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-config-network");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-config-nwfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-lxc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-gluster");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-iscsi-direct");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-rbd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-zfs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-vbox");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-system");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-system-systemd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-system-sysv");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-l10n");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-login-shell");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-sanlock");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-wireshark");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Ubuntu Local Security Checks");

  script_copyright(english:"Ubuntu Security Notice (C) 2024 Canonical, Inc. / NASL script (C) 2024 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 (! ('24.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 24.04', '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': '24.04', 'pkgname': 'libnss-libvirt', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-clients', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-clients-qemu', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-config-network', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-config-nwfilter', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-driver-lxc', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-driver-qemu', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-driver-storage-gluster', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-driver-storage-iscsi-direct', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-driver-storage-rbd', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-driver-storage-zfs', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-driver-vbox', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-driver-xen', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-system', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-system-systemd', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-daemon-system-sysv', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-dev', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-l10n', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-login-shell', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-sanlock', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt-wireshark', 'pkgver': '10.0.0-2ubuntu8.1'},
    {'osver': '24.04', 'pkgname': 'libvirt0', 'pkgver': '10.0.0-2ubuntu8.1'}
];

var flag = 0;
foreach 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 (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libnss-libvirt / libvirt-clients / libvirt-clients-qemu / etc');
}