Vulnerabilities > CVE-2017-13850 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Apple mac OS X

047910
CVSS 5.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
PARTIAL
network
apple
CWE-119
nessus

Summary

An issue was discovered in certain Apple products. macOS before 10.12.6 is affected. The issue involves the "Font Importer" component. It allows remote attackers to cause a denial of service (memory corruption) or obtain sensitive information from process memory via a crafted font.

Vulnerable Configurations

Part Description Count
OS
Apple
106

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

NASL familyMacOS X Local Security Checks
NASL idMACOS_10_13.NASL
descriptionThe remote host is running a version of Mac OS X that is prior to 10.10.5, 10.11.x prior to 10.11.6, 10.12.x prior to 10.12.6, or is not macOS 10.13. It is, therefore, affected by multiple vulnerabilities in the following components : - apache - AppSandbox - AppleScript - Application Firewall - ATS - Audio - CFNetwork - CFNetwork Proxies - CFString - Captive Network Assistant - CoreAudio - CoreText - DesktopServices - Directory Utility - file - Fonts - fsck_msdos - HFS - Heimdal - HelpViewer - IOFireWireFamily - ImageIO - Installer - Kernel - kext tools - libarchive - libc - libexpat - Mail - Mail Drafts - ntp - Open Scripting Architecture - PCRE - Postfix - Quick Look - QuickTime - Remote Management - SQLite - Sandbox - Screen Lock - Security - Spotlight - WebKit - zlib Note that successful exploitation of the most serious issues can result in arbitrary code execution.
last seen2020-06-01
modified2020-06-02
plugin id103598
published2017-10-03
reporterThis script is Copyright (C) 2017-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/103598
titlemacOS < 10.13 Multiple Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(103598);
  script_version("1.9");
  script_cvs_date("Date: 2018/07/14  1:59:37");

  script_cve_id(
    "CVE-2016-0736",
    "CVE-2016-2161",
    "CVE-2016-4736",
    "CVE-2016-5387",
    "CVE-2016-8740",
    "CVE-2016-8743",
    "CVE-2016-9042",
    "CVE-2016-9063",
    "CVE-2016-9840",
    "CVE-2016-9841",
    "CVE-2016-9842",
    "CVE-2016-9843",
    "CVE-2017-0381",
    "CVE-2017-3167",
    "CVE-2017-3169",
    "CVE-2017-6451",
    "CVE-2017-6452",
    "CVE-2017-6455",
    "CVE-2017-6458",
    "CVE-2017-6459",
    "CVE-2017-6460",
    "CVE-2017-6462",
    "CVE-2017-6463",
    "CVE-2017-6464",
    "CVE-2017-7074",
    "CVE-2017-7077",
    "CVE-2017-7078",
    "CVE-2017-7080",
    "CVE-2017-7082",
    "CVE-2017-7083",
    "CVE-2017-7084",
    "CVE-2017-7086",
    "CVE-2017-7114",
    "CVE-2017-7119",
    "CVE-2017-7121",
    "CVE-2017-7122",
    "CVE-2017-7123",
    "CVE-2017-7124",
    "CVE-2017-7125",
    "CVE-2017-7126",
    "CVE-2017-7127",
    "CVE-2017-7128",
    "CVE-2017-7129",
    "CVE-2017-7130",
    "CVE-2017-7132",
    "CVE-2017-7138",
    "CVE-2017-7141",
    "CVE-2017-7143",
    "CVE-2017-7144",
    "CVE-2017-7149",
    "CVE-2017-7150",
    "CVE-2017-7659",
    "CVE-2017-7668",
    "CVE-2017-7679",
    "CVE-2017-9233",
    "CVE-2017-9788",
    "CVE-2017-9789",
    "CVE-2017-10140",
    "CVE-2017-10989",
    "CVE-2017-11103",
    "CVE-2017-13782",
    "CVE-2017-13807",
    "CVE-2017-13808",
    "CVE-2017-13809",
    "CVE-2017-13810",
    "CVE-2017-13811",
    "CVE-2017-13812",
    "CVE-2017-13813",
    "CVE-2017-13814",
    "CVE-2017-13815",
    "CVE-2017-13816",
    "CVE-2017-13817",
    "CVE-2017-13818",
    "CVE-2017-13819",
    "CVE-2017-13820",
    "CVE-2017-13821",
    "CVE-2017-13822",
    "CVE-2017-13823",
    "CVE-2017-13824",
    "CVE-2017-13825",
    "CVE-2017-13827",
    "CVE-2017-13828",
    "CVE-2017-13829",
    "CVE-2017-13830",
    "CVE-2017-13831",
    "CVE-2017-13832",
    "CVE-2017-13833",
    "CVE-2017-13834",
    "CVE-2017-13836",
    "CVE-2017-13837",
    "CVE-2017-13838",
    "CVE-2017-13839",
    "CVE-2017-13840",
    "CVE-2017-13841",
    "CVE-2017-13842",
    "CVE-2017-13843",
    "CVE-2017-13846",
    "CVE-2017-13850",
    "CVE-2017-13851",
    "CVE-2017-13853",
    "CVE-2017-13854",
    "CVE-2017-13873",
    "CVE-2017-1000373"
  );
  script_bugtraq_id(
    91816,
    93055,
    94337,
    94650,
    95076,
    95077,
    95078,
    95131,
    95248,
    97045,
    97046,
    97049,
    97050,
    97051,
    97052,
    97058,
    97074,
    97076,
    97078,
    97201,
    99132,
    99134,
    99135,
    99137,
    99170,
    99177,
    99276,
    99502,
    99551,
    99568,
    99569,
    100987,
    100990,
    100991,
    100992,
    100993,
    100999,
    102100
  );
  script_xref(name:"APPLE-SA", value:"APPLE-SA-2017-09-25-1");

  script_name(english:"macOS < 10.13 Multiple Vulnerabilities");
  script_summary(english:"Checks the version of Mac OS X / macOS.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is missing a macOS update that fixes multiple security
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote host is running a version of Mac OS X that is prior to
10.10.5, 10.11.x prior to 10.11.6, 10.12.x prior to 10.12.6, or is
not macOS 10.13. It is, therefore, affected by multiple
vulnerabilities in the following components :

  - apache
  - AppSandbox
  - AppleScript
  - Application Firewall
  - ATS
  - Audio
  - CFNetwork
  - CFNetwork Proxies
  - CFString
  - Captive Network Assistant
  - CoreAudio
  - CoreText
  - DesktopServices
  - Directory Utility
  - file
  - Fonts
  - fsck_msdos
  - HFS
  - Heimdal
  - HelpViewer
  - IOFireWireFamily
  - ImageIO
  - Installer
  - Kernel
  - kext tools
  - libarchive
  - libc
  - libexpat
  - Mail
  - Mail Drafts
  - ntp
  - Open Scripting Architecture
  - PCRE
  - Postfix
  - Quick Look
  - QuickTime
  - Remote Management
  - SQLite
  - Sandbox
  - Screen Lock
  - Security
  - Spotlight
  - WebKit
  - zlib

Note that successful exploitation of the most serious issues can
result in arbitrary code execution.");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208144");
  script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT208165");
  # https://lists.apple.com/archives/security-announce/2017/Sep/msg00005.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9cfca404");
  script_set_attribute(attribute:"solution", value:
"Upgrade to macOS version 10.13 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/09/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/09/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/03");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:macos");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2017-2018 Tenable Network Security, Inc.");

  script_dependencies("ssh_get_info.nasl", "os_fingerprint.nasl");
  script_require_ports("Host/MacOSX/Version", "Host/OS");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");

os = get_kb_item("Host/MacOSX/Version");
if (!os)
{
  os = get_kb_item_or_exit("Host/OS");
  if ("Mac OS X" >!< os) audit(AUDIT_OS_NOT, "macOS / Mac OS X");

  c = get_kb_item("Host/OS/Confidence");
  if (c <= 70) exit(1, "Can't determine the host's OS with sufficient confidence.");
}
if (!os) audit(AUDIT_OS_NOT, "macOS / Mac OS X");

matches = pregmatch(pattern:"Mac OS X ([0-9]+(\.[0-9]+)+)", string:os);
if (empty_or_null(matches)) exit(1, "Failed to parse the macOS / Mac OS X version ('" + os + "').");

version = matches[1];
fixed_version = "10.13";

# Patches exist for 10.10.5, OS X Yosemite v10.11.6 and OS X El Capitan v10.12.6
# https://support.apple.com/en-us/HT208221
# Do NOT mark them as vuln
if (
  # No 10.x patch below 10.10.5
  ver_compare(ver:version, fix:'10.10.5', strict:FALSE) == -1
  ||
  # No 10.11.x patch below 10.11.6
  (
    version =~"^10\.11($|[^0-9])"
    &&
    ver_compare(ver:version, fix:'10.11.6', strict:FALSE) == -1
  )
  ||
  # No 10.12.x patch below 10.12.6
  (
    version =~"^10\.12($|[^0-9])"
    &&
    ver_compare(ver:version, fix:'10.12.6', strict:FALSE) == -1
  )
)
{
  security_report_v4(
    port:0,
    severity:SECURITY_HOLE,
    extra:
      '\n  Installed version : ' + version +
      '\n  Fixed version     : ' + fixed_version +
      '\n'
  );
}
else audit(AUDIT_INST_VER_NOT_VULN, "macOS / Mac OS X", version);