Vulnerabilities > CVE-2018-4340 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Apple products
Attack vector
LOCAL Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
A memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
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 family MacOS X Local Security Checks NASL id MACOSX_SECUPD_10_13_6_2018-002.NASL description The remote host is running macOS 10.13.6 and is missing a security update. It is therefore, affected by multiple vulnerabilities affecting the following components : - fpserver - AppleGraphicsControl - APR - ATS - CFNetwork - CoreAnimation - CoreCrypto - CoreFoundation - CUPS - Dictionary - dyld - EFI - Foundation - Grand Central Dispatch - Heimdal - Hypervisor - ICU - Intel Graphics Driver - IOGraphics - IOHIDFamily - IOKit - IOUserEthernet - IPSec - Kernel - Login Window - mDNSOffloadUserClient - MediaRemote - Microcode - NetworkExtension - Security - Spotlight - Symptom Framework - WiFi last seen 2020-03-18 modified 2018-10-31 plugin id 118575 published 2018-10-31 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118575 title macOS 10.13.6 Multiple Vulnerabilities (Security Update 2018-002) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(118575); script_version("1.7"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/13"); script_cve_id( "CVE-2017-12613", "CVE-2017-12618", "CVE-2018-3639", "CVE-2018-3640", "CVE-2018-3646", "CVE-2018-4126", "CVE-2018-4153", "CVE-2018-4203", "CVE-2018-4295", "CVE-2018-4304", "CVE-2018-4308", "CVE-2018-4310", "CVE-2018-4326", "CVE-2018-4331", "CVE-2018-4340", "CVE-2018-4341", "CVE-2018-4342", "CVE-2018-4346", "CVE-2018-4348", "CVE-2018-4350", "CVE-2018-4354", "CVE-2018-4368", "CVE-2018-4369", "CVE-2018-4371", "CVE-2018-4393", "CVE-2018-4394", "CVE-2018-4395", "CVE-2018-4396", "CVE-2018-4398", "CVE-2018-4399", "CVE-2018-4400", "CVE-2018-4401", "CVE-2018-4402", "CVE-2018-4406", "CVE-2018-4407", "CVE-2018-4408", "CVE-2018-4410", "CVE-2018-4411", "CVE-2018-4412", "CVE-2018-4413", "CVE-2018-4415", "CVE-2018-4417", "CVE-2018-4418", "CVE-2018-4419", "CVE-2018-4420", "CVE-2018-4422", "CVE-2018-4423", "CVE-2018-4425", "CVE-2018-4426" ); script_xref(name:"APPLE-SA", value:"APPLE-SA-2018-10-30-2"); script_name(english:"macOS 10.13.6 Multiple Vulnerabilities (Security Update 2018-002)"); script_summary(english:"Checks for the presence of Security Update 2018-002 (APPLE-SA-2018-10-30-2)."); script_set_attribute(attribute:"synopsis", value: "The remote host is missing a macOS security update that fixes multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "The remote host is running macOS 10.13.6 and is missing a security update. It is therefore, affected by multiple vulnerabilities affecting the following components : - fpserver - AppleGraphicsControl - APR - ATS - CFNetwork - CoreAnimation - CoreCrypto - CoreFoundation - CUPS - Dictionary - dyld - EFI - Foundation - Grand Central Dispatch - Heimdal - Hypervisor - ICU - Intel Graphics Driver - IOGraphics - IOHIDFamily - IOKit - IOUserEthernet - IPSec - Kernel - Login Window - mDNSOffloadUserClient - MediaRemote - Microcode - NetworkExtension - Security - Spotlight - Symptom Framework - WiFi"); script_set_attribute(attribute:"see_also", value:"https://support.apple.com/en-us/HT209193"); # https://lists.apple.com/archives/security-announce/2018/Oct/msg00003.html script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f0681c90"); script_set_attribute(attribute:"solution", value: "Install Security Update 2018-002 or later for 10.13.6."); 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:"cvss_score_source", value:"CVE-2018-4331"); 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:"2018/10/30"); script_set_attribute(attribute:"patch_publication_date", value:"2018/10/30"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/10/31"); script_set_attribute(attribute:"plugin_type", value:"local"); 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) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/MacOSX/Version", "Host/MacOSX/packages/boms"); exit(0); } include('lists.inc'); include('vcf.inc'); include('vcf_extras_apple.inc'); app_info = vcf::apple::macos::get_app_info(); constraints = [ { 'min_version' : '10.13', 'max_version' : '10.13.6', 'fixed_build': '17G3025', 'fixed_display' : '10.13.6 Security Update 2018-002' } ]; vcf::apple::macos::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);NASL family MacOS X Local Security Checks NASL id MACOS_10_14.NASL description The remote host is running a version of Mac OS X that is prior to 10.13.6 or is not macOS 10.14. It is, therefore, affected by multiple vulnerabilities in the following components : - afpserver - AppleGraphicsControl - Application Firewall - App Store - APR - ATS - Auto Unlock - Bluetooth - CFNetwork - CoreFoundation - CoreText - Crash Reporter - CUPS - Dictionary - Grand Central Dispatch - Heimdal - Hypervisor - iBooks - Intel Graphics Driver - IOHIDFamily - IOKit - IOUserEthernet - Kernel - LibreSSL - Login Window - mDNSOffloadUserClient - MediaRemote - Microcode - Security - Spotlight - Symptom Framework - Text - Wi-Fi Note that successful exploitation of the most serious issues can result in arbitrary code execution. last seen 2020-06-01 modified 2020-06-02 plugin id 118178 published 2018-10-18 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118178 title macOS < 10.14 Multiple Vulnerabilities NASL family MacOS X Local Security Checks NASL id MACOS_10_14_1.NASL description The remote host is running a version of macOS / Mac OS X that is 10.14.x prior to 10.14.1. It is, therefore, affected by multiple vulnerabilities related to the following components : -AppleGraphicsControl -CoreAnimation -CoreCrypto -Dock -dyld -EFI -ICU -IOGraphics -IOKit -IPSec -Kernel -Mail -Microcode -NetworkExtension -Security -WiFi Note that successful exploitation of the most serious issues can result in arbitrary code execution. last seen 2020-06-01 modified 2020-06-02 plugin id 118574 published 2018-10-31 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118574 title macOS 10.14.x < 10.14.1 Multiple Vulnerabilities NASL family MacOS X Local Security Checks NASL id MACOSX_SECUPD2018-005.NASL description The remote host is running Mac OS X 10.12.6 and is missing a security update. It is therefore, affected by multiple vulnerabilities affecting the following components : - afpserver - AppleGraphicsControl - APR - ATS - CFNetwork - CoreAnimation - CoreCrypto - CoreFoundation - CUPS - Dictionary - dyld - Foundation - Heimdal - Hypervisor - ICU - Intel Graphics Driver - IOGraphics - IOHIDFamily - IOKit - IOUserEthernet - IPSec - Kernel - Login Window - mDNSOffloadUserClient - MediaRemote - Microcode - Perl - Ruby - Security - Spotlight - Symptom Framework - WiFi last seen 2020-06-01 modified 2020-06-02 plugin id 118573 published 2018-10-31 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118573 title macOS and Mac OS X Multiple Vulnerabilities (Security Update 2018-005)