Ubuntu 16.04 LTS / 18.04 LTS : BlueZ vulnerabilities (USN-4311-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4311-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include('compat.inc');

if (description)
{
  script_id(135027);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/21");

  script_cve_id("CVE-2016-7837", "CVE-2020-0556");
  script_xref(name:"USN", value:"4311-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS : BlueZ vulnerabilities (USN-4311-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"It was discovered that BlueZ incorrectly handled bonding HID and HOGP
devices. A local attacker could possibly use this issue to impersonate
non-bonded devices. (CVE-2020-0556)

It was discovered that BlueZ incorrectly handled certain commands. A
local attacker could use this issue to cause BlueZ to crash, resulting
in a denial of service, or possibly execute arbitrary code. This issue
only affected Ubuntu 16.04 LTS. (CVE-2016-7837).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-4311-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:P/I:P/A:P");
  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: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");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-0556");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2016-7837");

  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:"2017/06/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/31");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bluez");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bluez-cups");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bluez-hcidump");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bluez-obexd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bluez-tests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libbluetooth-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libbluetooth3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bluetooth");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2020-2023 Canonical, Inc. / NASL script (C) 2020-2023 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 (! ('16.04' >< os_release || '18.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04', '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': '16.04', 'pkgname': 'bluetooth', 'pkgver': '5.37-0ubuntu5.3'},
    {'osver': '16.04', 'pkgname': 'bluez', 'pkgver': '5.37-0ubuntu5.3'},
    {'osver': '16.04', 'pkgname': 'bluez-cups', 'pkgver': '5.37-0ubuntu5.3'},
    {'osver': '16.04', 'pkgname': 'bluez-hcidump', 'pkgver': '5.37-0ubuntu5.3'},
    {'osver': '16.04', 'pkgname': 'bluez-obexd', 'pkgver': '5.37-0ubuntu5.3'},
    {'osver': '16.04', 'pkgname': 'bluez-tests', 'pkgver': '5.37-0ubuntu5.3'},
    {'osver': '16.04', 'pkgname': 'libbluetooth-dev', 'pkgver': '5.37-0ubuntu5.3'},
    {'osver': '16.04', 'pkgname': 'libbluetooth3', 'pkgver': '5.37-0ubuntu5.3'},
    {'osver': '18.04', 'pkgname': 'bluetooth', 'pkgver': '5.48-0ubuntu3.4'},
    {'osver': '18.04', 'pkgname': 'bluez', 'pkgver': '5.48-0ubuntu3.4'},
    {'osver': '18.04', 'pkgname': 'bluez-cups', 'pkgver': '5.48-0ubuntu3.4'},
    {'osver': '18.04', 'pkgname': 'bluez-hcidump', 'pkgver': '5.48-0ubuntu3.4'},
    {'osver': '18.04', 'pkgname': 'bluez-obexd', 'pkgver': '5.48-0ubuntu3.4'},
    {'osver': '18.04', 'pkgname': 'bluez-tests', 'pkgver': '5.48-0ubuntu3.4'},
    {'osver': '18.04', 'pkgname': 'libbluetooth-dev', 'pkgver': '5.48-0ubuntu3.4'},
    {'osver': '18.04', 'pkgname': 'libbluetooth3', 'pkgver': '5.48-0ubuntu3.4'}
];

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, 'bluetooth / bluez / bluez-cups / bluez-hcidump / bluez-obexd / etc');
}