Vulnerabilities > CVE-2016-4616 - 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
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
libxml2 in Apple iOS before 9.3.3, OS X before 10.11.6, iTunes before 12.4.2 on Windows, iCloud before 5.2.1 on Windows, tvOS before 9.2.2, and watchOS before 2.2.2 allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via unknown vectors, a different vulnerability than CVE-2016-4614, CVE-2016-4615, and CVE-2016-4619.
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 Misc. NASL id APPLETV_9_2_2.NASL description According to its banner, the version of the remote Apple TV device is prior to 9.2.2. It is, therefore, affected by multiple vulnerabilities in the following components : - CoreGraphics - ImageIO - IOAcceleratorFamily - IOHIDFamily - Kernel - libxml2 - libxslt - Sandbox Profiles - WebKit - WebKit Page Loading Note that only 4th generation models are affected by the vulnerabilities. last seen 2020-06-01 modified 2020-06-02 plugin id 92494 published 2016-07-21 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/92494 title Apple TV < 9.2.2 Multiple Vulnerabilities NASL family Windows NASL id ITUNES_12_4_2.NASL description The version of Apple iTunes installed on the remote Windows host is prior to 12.4.2. It is, therefore, affected by multiple vulnerabilities : - Multiple memory corruption issues exist in the libxslt component due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1684, CVE-2016-4607, CVE-2016-4608, CVE-2016-4609, CVE-2016-4610, CVE-2016-4612) - Multiple memory corruption issues exist in the libxml2 component that allow a remote attacker to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1836, CVE-2016-4447, CVE-2016-4448, CVE-2016-4483, CVE-2016-4614, CVE-2016-4615, CVE-2016-4616, CVE-2016-4619) - An XXE (Xml eXternal Entity) injection vulnerability exists in the libxml2 component due to an incorrectly configured XML parser accepting XML external entities from an untrusted source. A remote attacker can exploit this, via a specially crafted XML file, to disclose arbitrary files and user information. (CVE-2016-4449) Note that Nessus has not tested for these issues but has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 92410 published 2016-07-19 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/92410 title Apple iTunes < 12.4.2 Multiple Vulnerabilities (credentialed check) NASL family MacOS X Local Security Checks NASL id MACOSX_10_11_6.NASL description The remote host is running a version of Mac OS X that is 10.11.x prior to 10.11.6. It is, therefore, affected by multiple vulnerabilities in the following components : - apache_mod_php - Audio - bsdiff - CFNetwork - CoreGraphics - FaceTime - Graphics Drivers - ImageIO - Intel Graphics Driver - IOHIDFamily - IOKit - IOSurface - Kernel - libc++abi - libexpat - LibreSSL - libxml2 - libxslt - Login Window - OpenSSL - QuickTime - Safari Login AutoFill - Sandbox Profiles 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 92496 published 2016-07-21 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/92496 title Mac OS X 10.11.x < 10.11.6 Multiple Vulnerabilities NASL family Peer-To-Peer File Sharing NASL id ITUNES_12_4_2_BANNER.NASL description The version of Apple iTunes running on the remote Windows host is prior to 12.4.2. It is, therefore, affected by multiple vulnerabilities : - Multiple memory corruption issues exist in the libxslt component due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1684, CVE-2016-4607, CVE-2016-4608, CVE-2016-4609, CVE-2016-4610, CVE-2016-4612) - Multiple memory corruption issues exist in the libxml2 component that allow a remote attacker to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-1836, CVE-2016-4447, CVE-2016-4448, CVE-2016-4483, CVE-2016-4614, CVE-2016-4615, CVE-2016-4616, CVE-2016-4619) - An XXE (Xml eXternal Entity) injection vulnerability exists in the libxml2 component due to an incorrectly configured XML parser accepting XML external entities from an untrusted source. A remote attacker can exploit this, via a specially crafted XML file, to disclose arbitrary files and user information. (CVE-2016-4449) Note that Nessus has not tested for these issues but has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 92411 published 2016-07-19 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/92411 title Apple iTunes < 12.4.2 Multiple Vulnerabilities (uncredentialed check) NASL family MacOS X Local Security Checks NASL id MACOSX_SECUPD2016-004.NASL description The remote host is running a version of Mac OS X that is 10.9.5 or 10.10.5 and is missing Security Update 2016-004. It is, therefore, affected by multiple vulnerabilities in the following components : - apache_mod_php (affects 10.10.5 only) - CoreGraphics - ImageIO - libxml2 - libxslt 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 92497 published 2016-07-21 reporter This script is Copyright (C) 2016-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/92497 title Mac OS X 10.9.5 and 10.10.5 Multiple Vulnerabilities (Security Update 2016-004)
References
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00005.html
- http://www.securityfocus.com/bid/91826
- http://www.securitytracker.com/id/1036348
- https://support.apple.com/HT206899
- https://support.apple.com/HT206901
- https://support.apple.com/HT206902
- https://support.apple.com/HT206903
- https://support.apple.com/HT206904
- https://support.apple.com/HT206905