Ubuntu 14.04 LTS / 16.04 LTS : DBus vulnerabilities (USN-3116-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3116-1. 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(94465);
  script_version("2.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id("CVE-2015-0245");
  script_xref(name:"USN", value:"3116-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS : DBus vulnerabilities (USN-3116-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by a vulnerability as referenced
in the USN-3116-1 advisory.

    It was discovered that DBus incorrectly validated the source of ActivationFailure signals. A local
    attacker could use this issue to cause a denial of service. This issue only applied to Ubuntu 12.04 LTS
    and Ubuntu 14.04 LTS. (CVE-2015-0245)

    It was discovered that DBus incorrectly handled certain format strings. A local attacker could use this
    issue to cause a denial of service, or possibly execute arbitrary code. This issue is only exposed to
    unprivileged users when the fix for CVE-2015-0245 is not applied, hence this issue is only likely to
    affect Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. Ubuntu 16.04 LTS and Ubuntu 16.10 have been updated as a
    preventative measure in the event that a new attack vector for this issue is discovered. (No CVE number)

Tenable has extracted the preceding description block directly from the Ubuntu 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://ubuntu.com/security/notices/USN-3116-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:N/I:N/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:H/PR:L/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-2015-0245");

  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:"2015/02/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/11/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/11/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:dbus");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:dbus-tests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:dbus-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:dbus-user-session");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:dbus-x11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdbus-1-3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdbus-1-3-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdbus-1-dev");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  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) 2016-2024 Canonical, Inc. / NASL script (C) 2016-2024 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 (! ('14.04' >< os_release || '16.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 16.04', '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': '14.04', 'pkgname': 'dbus', 'pkgver': '1.6.18-0ubuntu4.4'},
    {'osver': '14.04', 'pkgname': 'dbus-x11', 'pkgver': '1.6.18-0ubuntu4.4'},
    {'osver': '14.04', 'pkgname': 'libdbus-1-3', 'pkgver': '1.6.18-0ubuntu4.4'},
    {'osver': '14.04', 'pkgname': 'libdbus-1-dev', 'pkgver': '1.6.18-0ubuntu4.4'},
    {'osver': '16.04', 'pkgname': 'dbus', 'pkgver': '1.10.6-1ubuntu3.1'},
    {'osver': '16.04', 'pkgname': 'dbus-tests', 'pkgver': '1.10.6-1ubuntu3.1'},
    {'osver': '16.04', 'pkgname': 'dbus-udeb', 'pkgver': '1.10.6-1ubuntu3.1'},
    {'osver': '16.04', 'pkgname': 'dbus-user-session', 'pkgver': '1.10.6-1ubuntu3.1'},
    {'osver': '16.04', 'pkgname': 'dbus-x11', 'pkgver': '1.10.6-1ubuntu3.1'},
    {'osver': '16.04', 'pkgname': 'libdbus-1-3', 'pkgver': '1.10.6-1ubuntu3.1'},
    {'osver': '16.04', 'pkgname': 'libdbus-1-3-udeb', 'pkgver': '1.10.6-1ubuntu3.1'},
    {'osver': '16.04', 'pkgname': 'libdbus-1-dev', 'pkgver': '1.10.6-1ubuntu3.1'}
];

var flag = 0;
foreach var 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)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_NOTE,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'dbus / dbus-tests / dbus-udeb / dbus-user-session / dbus-x11 / etc');
}