Vulnerabilities > CVE-2016-4718 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Apple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
NONE Availability impact
NONE Summary
Buffer overflow in FontParser in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 allows remote attackers to obtain sensitive information from process memory via a crafted font file.
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 MACOS_10_12.NASL description 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, or is not macOS 10.12. It is, therefore, affected by multiple vulnerabilities in the following components : - apache - apache_mod_php - Apple HSSPI Support - AppleEFIRuntime - AppleMobileFileIntegrity - AppleUCC - Application Firewall - ATS - Audio - Bluetooth - cd9660 - CFNetwork - CommonCrypto - CoreCrypto - CoreDisplay - curl - Date & Time Pref Pane - DiskArbitration - File Bookmark - FontParser - IDS - Connectivity - ImageIO - Intel Graphics Driver - IOAcceleratorFamily - IOThunderboltFamily - Kerberos v5 PAM module - Kernel - libarchive - libxml2 - libxpc - libxslt - mDNSResponder - NSSecureTextField - Perl - S2 Camera - Security - Terminal - WindowServer 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 93685 published 2016-09-23 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/93685 title macOS < 10.12 Multiple Vulnerabilities NASL family Misc. NASL id APPLETV_10.NASL description According to its banner, the version of Apple TV on the remote device is prior to 10. It is, therefore, affected by multiple vulnerabilities in the following components : - Audio - CFNetwork - CoreCrypto - FontParser - IOAcceleratorFamily - Kernel - libxml2 - libxslt - Security - WebKit Note that only 4th generation models are affected by these vulnerabilities. last seen 2020-06-01 modified 2020-06-02 plugin id 93776 published 2016-09-28 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/93776 title Apple TV < 10 Multiple Vulnerabilities
References
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
- https://support.apple.com/HT207170
- https://support.apple.com/HT207143
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00010.html
- https://support.apple.com/HT207141
- https://support.apple.com/HT207142
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00011.html
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
- http://www.securityfocus.com/bid/93054
- http://www.securitytracker.com/id/1036858