The Graphics Drivers subsystem in Apple OS X before 10.11.6 allows local users to gain privileges or cause a denial of service (memory corruption) via unspecified vectors.

The specific version of Mac OS X that the system is running is reportedly affected by the following vulnerabilities:

- Apple Mac OS X contains an unspecified NULL pointer dereference flaw in Audio, which may allow a local attacker to cause a denial of service for the system. (CVE-2016-4649)

- Apple Mac OS X contains a use-after-free flaw in DspFuncLib that is triggered as user-supplied input is not properly validated when handling function IDs. This may allow a local attacker to dereference already freed memory and potentially execute arbitrary code in the context of the kernel. (CVE-2016-4647)

- Apple Mac OS X contains a use-after-free error in the DspFuncLib extension. The issue is triggered when handling error conditions. With a specially crafted file, a local attacker can dereference already freed memory and potentially execute arbitrary code with root privileges. (CVE-2016-4648)

- Apple Mac OS X contains an out-of-bounds read flaw in ACMP4AACBaseDecoder that is triggered during the handling of a specially crafted MOV file. This may allow a context-dependent attacker to disclose user information. (CVE-2016-4646)

- Apple Mac OS X contains an integer overflow in bspatch related to bsdiff that is triggered as bounds are not properly checked. This may allow a local attacker to potentially gain elevated privileges. (CVE-2014-9862)

- Apple Mac OS X contains a permission flaw in CFNetwork that is triggered during the handling of web browser cookies. This may allow a local attacker to view sensitive user information. (CVE-2016-4645)

- Apple Mac OS X contains an out-of-bounds read flaw in CoreGraphics that is triggered as input is not properly validated. This may allow a local attacker to disclose kernel memory. (CVE-2016-4652)

- Multiple Apple products contain a flaw in CoreGraphics. The issue is triggered as user-supplied input is not properly validated. This may allow a remote attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4637)

- Multiple Apple products contain a flaw in FaceTime that is triggered as user interface inconsistencies occur when handling relayed calls. This may allow a man-in-the-middle attacker to cause a relayed call to continue to transmit audio while the call appears to be terminated. (CVE-2016-4635)

- Apple Mac OS X contains a flaw in Graphics drivers. The issue is triggered as user-supplied input is not properly validated. This may allow a local attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4634)

- Apple Mac OS X contains a flaw in ImageIO. The issue is triggered as user-supplied input is not properly validated. This may allow a remote attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4629)

- Apple Mac OS X contains a flaw in ImageIO. The issue is triggered as user-supplied input is not properly validated. This may allow a remote attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4630)

- Multiple Apple products contain an unspecified flaw in ImageIO that is triggered as memory is not properly handled. This may allow a remote attacker to cause a consumption of available memory resources. (CVE-2016-4632)

- Multiple Apple products contain multiple flaws in ImageIO. The issues are triggered as user-supplied input is not properly validated. This may allow a remote attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4631)

- Apple Mac OS X contains multiple flaws in the Intel Graphics driver. The issues are triggered as user-supplied input is not properly validated when handling memory. This may allow a local attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4633)

- Multiple Apple products contain an unspecified NULL pointer dereference flaw in IOHIDFamily that is triggered as input is not properly validated. This may allow a local attacker to gain elevated, kernel privileges.  (CVE-2016-4626)

- Apple Mac OS X contains a use-after-free error in IOSurface that is triggered as memory is not properly managed, which may allow a local attacker to dereference already freed memory and gain elevated, kernel privileges. (CVE-2016-4625)

- Multiple Apple products contain a flaw in Sandbox Profiles that is triggered as restrictions are not properly enforced on privileged API calls. This may allow a local attacker to access the process list. (CVE-2016-4594)

- Multiple Apple products contain a flaw in the Kernel that is triggered as user-supplied input is not properly validated. This may allow a local attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code with kernel privileges. (CVE-2016-1863)

- Multiple Apple products contain a flaw in the Kernel that is triggered as user-supplied input is not properly validated. This may allow a local attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code with kernel privileges. (CVE-2016-4582)

- Multiple Apple products contain an unspecified NULL pointer dereference flaw in Kernel that is triggered as input is not properly validated. This may allow a local attacker to cause a denial of service for the system. (CVE-2016-1865)

- Apple Mac OS X contains multiple flaws in libc++abi. The issues are triggered as user-supplied input is not properly validated when handling memory. This may allow a local attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code with root privileges. (CVE-2016-4621)

- Multiple Apple products contain a flaw in libxml2 that is triggered as user-supplied input is not properly validated. This may allow an attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4614)

- Multiple Apple products contain a flaw in libxml2 that is triggered as user-supplied input is not properly validated. This may allow an attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4615)

- Multiple Apple products contain a flaw in libxml2 that is triggered as user-supplied input is not properly validated. This may allow an attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4616)

- Multiple Apple products contain a flaw in libxml2 that is triggered as user-supplied input is not properly validated. This may allow an attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4619)

- Multiple Apple products contain a flaw in libxslt that is triggered as user-supplied input is not properly validated. This may allow an attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4607)

- Multiple Apple products contain a flaw in libxslt that is triggered as user-supplied input is not properly validated. This may allow an attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4608)

- Multiple Apple products contain a flaw in libxslt that is triggered as user-supplied input is not properly validated. This may allow an attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4609)

- Multiple Apple products contain a flaw in libxslt that is triggered as user-supplied input is not properly validated. This may allow an attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4610)

- Multiple Apple products contain a flaw in libxslt that is triggered as user-supplied input is not properly validated. This may allow an attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4612)

- Apple Mac OS X contains an unspecified type confusion flaw in the Login Window, which may allow a local attacker to gain elevated, root privileges. (CVE-2016-4638)

- Apple Mac OS X contains an overflow condition that is triggered as user-supplied input is not properly validated when interacting with _XRegisterCursorWithData. This may allow a local attacker to cause a heap-based buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code. (CVE-2016-4640)

- Apple Mac OS X contains a type confusion flaw that is triggered by certain _XSetDictionaryForCurrentSession interactions, which may allow a local attacker to gain elevated privileges. (CVE-2016-4641)

- Apple Mac OS X contains an unspecified memory initialization flaw in the Login Window, which may allow a local attacker to cause a denial of service. (CVE-2016-4639)

- Apple Mac OS X contains a flaw in QuickTime. The issue is triggered as user-supplied input is not properly validated when handling a specially crafted SGI file. This may allow a context-dependent attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-4601)

- Apple Mac OS X contains a flaw in QuickTime. The issue is triggered as user-supplied input is not properly validated when handling a specially crafted Photoshop Document (PSD). This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-4599)

- Apple Mac OS X contains a flaw in QuickTime. The issue is triggered as user-supplied input is not properly validated when handling a specially crafted FlashPix Bitmap (FPX) file. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-4596)

- Apple Mac OS X contains a flaw in QuickTime. The issue is triggered as user-supplied input is not properly validated when handling a specially crafted FlashPix Bitmap (FPX) file. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-4597)

- Apple Mac OS X contains a flaw in QuickTime. The issue is triggered as user-supplied input is not properly validated when handling a specially crafted FlashPix Bitmap (FPX) file. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-4600)

- Apple Mac OS X contains a flaw in QuickTime. The issue is triggered as user-supplied input is not properly validated when handling a specially crafted FlashPix Bitmap (FPX) file. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-4602)

- Apple Mac OS X contains a flaw in QuickTime. The issue is triggered as user-supplied input is not properly validated when handling a specially crafted image file. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-4598)

- Apple Mac OS X contains a flaw in the Safari Login AutoFill feature that can cause the user's password to be displayed unobfuscated on the screen. This may allow a physically present attacker to potentially gain knowledge of a user's password. (CVE-2016-4595)

- Multiple Apple products contain a flaw in IOPMrootDomain in the kernel that is triggered as certain input is not properly validated. This may allow a local attacker to corrupt memory and potentially execute code with elevated privileges. (CVE-2016-4653)

- Multiple Apple Products contain a flaw in CFNetwork Proxies that is due to the transfer of password information in cleartext. This may allow a man-in-the-middle attacker to gain access to password information. (CVE-2016-4642)

- Multiple Apple Products contain a flaw in CFNetowrk Proxies that is triggered when parsing 407 responses. This may allow a man-in-the-middle attacker to disclose sensitive user information. (CVE-2016-4643)

- Multiple Apple products contain a downgrade flaw in CFNetwork Proxies that is triggered when saving HTTP authentication credentials in the Keychain. This may allow a man-in-the-middle attacker to disclose sensitive user information. (CVE-2016-4644)

The remote host is running a version of Mac OS X version 10.11.x prior to 10.11.6, and the following components contain vulnerabilities :

 - ACMP4AACBaseDecoder
 - Audio
 - CFNetwork
 - CoreGraphics
 - DspFuncLib
 - FaceTime
 - Graphics
 - IOHIDFamily
 - IOSurface
 - ImageIO
 - Kernel
 - QuickTime
 - Safari
 - Sandbox
 - libxml2

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.

ID	Name	Product	Family	Severity
802026	Mac OS X < 10.11.6 Multiple Vulnerabilities	Log Correlation Engine	Operating System Detection	critical
9441	Mac OS X 10.11.x < 10.11.6 Multiple Vulnerabilities	Nessus Network Monitor	Operating System Detection	critical
92496	Mac OS X 10.11.x < 10.11.6 Multiple Vulnerabilities	Nessus	MacOS X Local Security Checks	critical

Detections

Analytics

CVE-2016-4634

high

Tenable Plugins

critical

critical

critical