Vulnerabilities > CVE-2018-4282 - Out-of-bounds Read vulnerability in Apple Iphone OS

047910
CVSS 5.5 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
HIGH
Integrity impact
NONE
Availability impact
NONE
local
low complexity
apple
CWE-125
nessus

Summary

An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue affected versions prior to iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2.

Vulnerable Configurations

Part Description Count
OS
Apple
267

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Overread Buffers
    An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

Nessus

NASL familyMisc.
NASL idAPPLETV_11_4_1.NASL
descriptionAccording to its banner, the version of Apple TV on the remote device is prior to 11.4.1. It is, therefore, affected by multiple vulnerabilities as described in the HT208936 security advisory. Note that only 4th and 5th generation models are affected by these vulnerabilities.
last seen2020-06-01
modified2020-06-02
plugin id111110
published2018-07-16
reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/111110
titleApple TV < 11.4.1 Multiple Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(111110);
  script_version("1.5");
  script_cvs_date("Date: 2019/11/04");

  script_cve_id(
    "CVE-2018-4248",
    "CVE-2018-4261",
    "CVE-2018-4262",
    "CVE-2018-4263",
    "CVE-2018-4264",
    "CVE-2018-4265",
    "CVE-2018-4266",
    "CVE-2018-4267",
    "CVE-2018-4270",
    "CVE-2018-4271",
    "CVE-2018-4272",
    "CVE-2018-4273",
    "CVE-2018-4277",
    "CVE-2018-4278",
    "CVE-2018-4280",
    "CVE-2018-4282",
    "CVE-2018-4284",
    "CVE-2018-4293"
  );
  script_bugtraq_id(
    103957,
    103958,
    103961,
    104378
  );

  script_name(english:"Apple TV < 11.4.1 Multiple Vulnerabilities");
  script_summary(english:"Checks the build number.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Apple TV device is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its banner, the version of Apple TV on the remote device
is prior to 11.4.1. It is, therefore, affected by multiple
vulnerabilities as described in the HT208936 security advisory.

Note that only 4th and 5th generation models are affected by these
vulnerabilities.");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208936");
  # https://lists.apple.com/archives/security-announce/2018/Jul/msg00003.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cf6d645c");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apple TV version 11.4.1 or later. Note that this update is
only available for 4th and 5th generation models.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:N/AC:L/PR:N/UI:R/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-2018-4284");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/07/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/07/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/16");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apple:apple_tv");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("appletv_version.nasl");
  script_require_keys("AppleTV/Version", "AppleTV/Model", "AppleTV/URL", "AppleTV/Port");
  script_require_ports("Services/www", 7000);

  exit(0);
}

include("audit.inc");
include("appletv_func.inc");

url = get_kb_item('AppleTV/URL');
if (empty_or_null(url)) exit(0, 'Cannot determine Apple TV URL.');
port = get_kb_item('AppleTV/Port');
if (empty_or_null(port)) exit(0, 'Cannot determine Apple TV port.');

build = get_kb_item('AppleTV/Version');
if (empty_or_null(build)) audit(AUDIT_UNKNOWN_DEVICE_VER, 'Apple TV');

model = get_kb_item('AppleTV/Model');
if (empty_or_null(model)) exit(0, 'Cannot determine Apple TV model.');

# https://en.wikipedia.org/wiki/TvOS
# 4th gen model "5,3" and 5th gen model "6,2" share same build
fixed_build = "15M73";
tvos_ver = '11';

# determine gen from the model
gen = APPLETV_MODEL_GEN[model];

appletv_check_version(
  build          : build,
  fix            : fixed_build,
  affected_gen   : make_list(4, 5),
  fix_tvos_ver   : tvos_ver,
  model          : model,
  gen            : gen,
  port           : port,
  url            : url,
  severity       : SECURITY_WARNING
);