About the security content of OS X El Capitan v10.11.6 and Security Update 2016-004
This document describes the security content of OS X El Capitan v10.11.6 and Security Update 2016-004.
About Apple security updates
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Apple security documents reference vulnerabilities by CVE-ID when possible.
OS X El Capitan v10.11.6 and Security Update 2016-004
apache_mod_php
Available for: OS X Yosemite v10.10.5 and OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: Multiple issues existed in PHP versions prior to 5.5.36. These were addressed by updating PHP to version 5.5.36.
CVE-2016-5093
CVE-2016-5094
CVE-2016-5096
CVE-2013-7456
Audio
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to cause a system denial of service
Description: A null pointer dereference was addressed through improved input validation.
CVE-2016-4649 : Juwei Lin(@fuzzerDOTcn) of Trend Micro
Audio
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed through improved memory handling.
CVE-2016-4647 : Juwei Lin(@fuzzerDOTcn) of Trend Micro
Audio
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to determine kernel memory layout
Description: An out-of-bounds read was addressed through improved input validation.
CVE-2016-4648 : Juwei Lin(@fuzzerDOTcn) of Trend Micro; Jack Tang and Moony Li of Trend Micro working with Trend Micro's Zero Day Initiative
Audio
Available for: OS X El Capitan v10.11 and later
Impact: Parsing a maliciously crafted audio file may lead to the disclosure of user information
Description: An out-of-bounds read was addressed through improved bounds checking.
CVE-2016-4646 : Steven Seeley of Source Incite working with Trend Micro's Zero Day Initiative
bsdiff
Available for: OS X El Capitan v10.11 and later
Impact: A local attacker may be able to cause unexpected application termination or arbitrary code execution
Description: An integer overflow existed in bspatch. This issue was addressed through improved bounds checking.
CVE-2014-9862 : an anonymous researcher
CFNetwork
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to view sensitive user information
Description: A permissions issue existed in the handling of web browser cookies. This issue was addressed through improved restrictions.
CVE-2016-4645 : Abhinav Bansal of Zscaler Inc.
CFNetwork Credentials
Available for: OS X El Capitan v10.11 and later
Impact: An attacker in a privileged network position may be able to leak sensitive user information
Description: A downgrade issue existed with HTTP authentication credentials saved in Keychain. This issue was addressed by storing the authentication types with the credentials.
CVE-2016-4644 : Jerry Decime coordinated via CERT
CFNetwork Proxies
Available for: OS X El Capitan v10.11 and later
Impact: An attacker in a privileged network position may be able to leak sensitive user information
Description: A validation issue existed in the parsing of 407 responses. This issue was addressed through improved response validation.
CVE-2016-4643 : Xiaofeng Zheng of Blue Lotus Team, Tsinghua University; Jerry Decime coordinated via CERT
CFNetwork Proxies
Available for: OS X El Capitan v10.11 and later
Impact: An application may unknowingly send a password unencrypted over the network
Description: Proxy authentication incorrectly reported HTTP proxies received credentials securely. This issue was addressed through improved warnings.
CVE-2016-4642 : Jerry Decime coordinated via CERT
CoreGraphics
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to elevate privileges
Description: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed through improved input validation.
CVE-2016-4652 : Yubin Fu of Tencent KeenLab working with Trend Micro's Zero Day Initiative
CoreGraphics
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: A memory corruption issue was addressed through improved memory handling.
CVE-2016-4637 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports)
FaceTime
Available for: OS X El Capitan v10.11 and later
Impact: An attacker in a privileged network position may be able to cause a relayed call to continue transmitting audio while appearing as if the call terminated
Description: User interface inconsistencies existed in the handling of relayed calls. These issues were addressed through improved FaceTime display logic.
CVE-2016-4635 : Martin Vigo
Graphics Drivers
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed through improved input validation.
CVE-2016-4634 : Stefan Esser of SektionEins
ImageIO
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-4629 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports)
CVE-2016-4630 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports)
ImageIO
Available for: OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to cause a denial of service
Description: A memory consumption issue was addressed through improved memory handling.
CVE-2016-4632 : Evgeny Sidorov of Yandex
ImageIO
Available for: OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-4631 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports)
ImageIO
Available for: OS X El Capitan v10.11 and later
Impact: Processing a maliciously crafted image may lead to arbitrary code execution
Description: A memory corruption issue was addressed through improved memory handling.
CVE-2016-7705 : Craig Young of Tripwire VERT
Intel Graphics Driver
Available for: OS X El Capitan v10.11 and later
Impact: A malicious application may be able to execute arbitrary code with kernel privileges
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-4633 : Marco Grassi (@marcograss) of KeenLab (@keen_lab), Tencent
IOHIDFamily
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: A null pointer dereference was addressed through improved input validation.
CVE-2016-4626 : Stefan Esser of SektionEins
IOSurface
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: A use-after-free was addressed through improved memory management.
CVE-2016-4625 : Ian Beer of Google Project Zero
Kernel
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-1863 : Ian Beer of Google Project Zero
CVE-2016-4653 : Ju Zhu of Trend Micro
CVE-2016-4582 : Shrek_wzw and Proteas of Qihoo 360 Nirvan Team
Kernel
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to cause a system denial of service
Description: A null pointer dereference was addressed through improved input validation.
CVE-2016-1865 : Marco Grassi (@marcograss) of KeenLab (@keen_lab), Tencent, CESG
Libc
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution
Description: A buffer overflow existed within the "link_ntoa()" function in linkaddr.c. This issue was addressed through additional bounds checking.
CVE-2016-6559 : Apple
libc++abi
Available for: OS X El Capitan v10.11 and later
Impact: An application may be able to execute arbitrary code with root privileges
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-4621 : an anonymous researcher
libexpat
Available for: OS X El Capitan v10.11 and later
Impact: Processing maliciously crafted XML may lead to unexpected application termination or arbitrary code execution
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-0718 : Gustavo Grieco
LibreSSL
Available for: OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: Multiple issues existed in LibreSSL before 2.2.7. These were addressed by updating LibreSSL to version 2.2.7.
CVE-2016-2108 : Huzaifa Sidhpurwala (Red Hat), Hanno Böck, David Benjamin (Google), Mark Brand and Ian Beer of Google Project Zero
CVE-2016-2109 : Brian Carpenter
libxml2
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: Multiple vulnerabilities in libxml2
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2015-8317 : Hanno Boeck
CVE-2016-1836 : Wei Lei and Liu Yang of Nanyang Technological University
CVE-2016-4447 : Wei Lei and Liu Yang of Nanyang Technological University
CVE-2016-4448 : Apple
CVE-2016-4483 : Gustavo Grieco
CVE-2016-4614 : Nick Wellnhofer
CVE-2016-4615 : Nick Wellnhofer
CVE-2016-4616 : Michael Paddon
libxml2
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: Parsing a maliciously crafted XML document may lead to disclosure of user information
Description: An access issue existed in the parsing of maliciously crafted XML files. This issue was addressed through improved input validation.
CVE-2016-4449 : Kostya Serebryany
libxslt
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later
Impact: Multiple vulnerabilities in libxslt
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-1683 : Nicolas Grégoire
CVE-2016-1684 : Nicolas Grégoire
CVE-2016-4607 : Nick Wellnhofer
CVE-2016-4608 : Nicolas Grégoire
CVE-2016-4609 : Nick Wellnhofer
CVE-2016-4610 : Nick Wellnhofer
Login Window
Available for: OS X El Capitan v10.11 and later
Impact: A malicious application may be able to gain root privileges
Description: A type confusion issue was addressed through improved memory handling.
CVE-2016-4638 : Yubin Fu of Tencent KeenLab working with TrendMicro's Zero Day Initiative
Login Window
Available for: OS X El Capitan v10.11 and later
Impact: A malicious application may be able to execute arbitrary code leading to compromise of user information
Description: A memory corruption issue was addressed through improved input validation.
CVE-2016-4640 : an anonymous researcher working with Trend Micro’s Zero Day Initiative
Login Window
Available for: OS X El Capitan v10.11 and later
Impact: A malicious application may be able to execute arbitrary code leading to the compromise of user information
Description: A type confusion issue was addressed through improved memory handling.
CVE-2016-4641 : Yubin Fu of Tencent KeenLab working with Trend Micro's Zero Day Initiative
Login Window
Available for: OS X El Capitan v10.11 and later
Impact: A local user may be able to cause a denial of service
Description: A memory initialization issue was addressed through improved memory handling.
CVE-2016-4639 : Yubin Fu of Tencent KeenLab working with Trend Micro's Zero Day Initiative
OpenSSL
Available for: OS X El Capitan v10.11 and later
Impact: A remote attacker may be able to execute arbitrary code
Description: Multiple issues existed in OpenSSL. These issues were resolved by backporting the fixes from OpenSSL 1.0.2h/1.0.1 to OpenSSL 0.9.8.
CVE-2016-2105 : Guido Vranken
CVE-2016-2106 : Guido Vranken
CVE-2016-2107 : Juraj Somorovsky
CVE-2016-2108 : Huzaifa Sidhpurwala (Red Hat), Hanno Böck, David Benjamin (Google), Mark Brand and Ian Beer of Google Project Zero
CVE-2016-2109 : Brian Carpenter
CVE-2016-2176 : Guido Vranken
QuickTime
Available for: OS X El Capitan v10.11 and later
Impact: Processing a maliciously crafted SGI file may lead to arbitrary code execution
Description: A memory corruption issue was addressed through improved input validation.
CVE-2016-4601 : Ke Liu of Tencent's Xuanwu Lab
QuickTime
Available for: OS X El Capitan v10.11 and later
Impact: Processing a maliciously crafted Photoshop document may lead to unexpected application termination or arbitrary code execution
Description: A memory corruption issue was addressed through improved input validation.
CVE-2016-4599 : Ke Liu of Tencent's Xuanwu Lab
QuickTime
Available for: OS X El Capitan v10.11 and later
Impact: Processing a maliciously crafted FlashPix Bitmap Image may lead to unexpected application termination or arbitrary code execution
Description: Multiple memory corruption issues were addressed through improved memory handling.
CVE-2016-4596 : Ke Liu of Tencent's Xuanwu Lab
CVE-2016-4597 : Ke Liu of Tencent's Xuanwu Lab
CVE-2016-4600 : Ke Liu of Tencent's Xuanwu Lab
CVE-2016-4602 : Ke Liu of Tencent's Xuanwu Lab
QuickTime
Available for: OS X El Capitan v10.11 and later
Impact: Processing a maliciously crafted image may lead to arbitrary code execution
Description: A memory corruption issue was addressed through improved input validation.
CVE-2016-4598 : Ke Liu of Tencent's Xuanwu Lab
Safari Login AutoFill
Available for: OS X El Capitan v10.11 and later
Impact: A user's password may be visible on screen
Description: An issue existed in Safari's password auto-fill. This issue was addressed through improved matching of form fields.
CVE-2016-4595 : Jonathan Lewis from DeARX Services (PTY) LTD
Sandbox Profiles
Available for: OS X El Capitan v10.11 and later
Impact: A local application may be able to access the process list
Description: An access issue existed with privileged API calls. This issue was addressed through additional restrictions.
CVE-2016-4594 : Stefan Esser of SektionEins
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