Use-after-free vulnerability in the kernel in Apple iOS before 9.3, OS X before 10.11.4, tvOS before 9.2, and watchOS before 2.2 allows attackers to execute arbitrary code in a privileged context via a crafted app.

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

- Multiple Apple products contain a flaw in AppleUSBNetworking. The issue is triggered as user-supplied input is not properly validated when handling data from USB devices. This may allow a physically present attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-1734)

- Multiple Apple products contain a flaw in FontParser. The issue is triggered as user-supplied input is not properly validated when handling encoded fonts that contain invalid characters in specially crafted PDF files. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1740)

- Multiple Apple products contain a flaw in IOHIDFamily. The issue is triggered as user-supplied input is not properly validated. This may allow a local attacker to corrupt memory and disclosure arbitrary memory locations. (CVE-2016-1748)

- Multiple Apple products contain an unspecified flaw in the kernel that may allow a local attacker to cause a denial of service. No further details have been provided. (CVE-2016-1752)

- Multiple Apple products contain a use-after-free error in the Kernel. This may allow a local attacker to dereference already freed memory and gain elevated privileges. No further details have been provided. (CVE-2016-1750)

- Multiple Apple products contain a flaw in the Kernel that is due to the system inappropriately granting execute permissions to applications. This may allow a local attacker to bypass code signing checks. (CVE-2016-1751)

- Multiple Apple products contain a race condition that is triggered during the creation of new suid processes. This may allow a local attacker to gain 'root' privileges. (CVE-2016-1757)

- Multiple Apple products contain an unspecified NULL pointer dereference flaw in the kernel that may allow a local attacker to gain elevated privileges. No further details have been provided. (CVE-2016-1756)

- Multiple Apple products contain a flaw in the Kernel. 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-2016-1754)

- Multiple Apple products contain a use-after-free condition in the AppleKeyStore userclient. The issue is triggered when handling simultaneous threads where one tries to close the userclient while the other tries to make an external method call. This may allow a local attacker to dereference already freed memory and potentially execute arbitrary code with elevated privileges. (CVE-2016-1755)

- Multiple Apple products contain an unspecified out-of-bounds read flaw in the kernel that may allow a local attacker to disclosure arbitrary content in the memory. No further details have been provided. (CVE-2016-1758)

- Libxml2 contains a flaw that is triggered as user-supplied input is not properly validated when handling XML content that contains ENTITY declarations referencing unsupported protocols. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1761)

- Multiple Apple products contain an out-of-bounds write flaw in TrueTypeScaler. The issue is triggered as user-supplied input is not properly validated when handling bdat tables in TTF fonts. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-1775)

- Apple Mac OS X contains a flaw in AppleRAID. 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-2016-1733)

- Apple Mac OS X contains an out-of-bounds read flaw in AppleRAID that is triggered when input is not properly sanitized. This may allow a local attacker to potentially disclose memory contents. (CVE-2016-1732)

- Apple Mac OS X contains a flaw in Bluetooth. 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-2016-1735)

- Apple Mac OS X contains a flaw in Bluetooth. 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-2016-1736)

- Apple Mac OS X contains multiple flaws in Carbon. The issues are triggered as user-supplied input is not properly validated when handling DFONT files. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1737)

- Apple Mac OS X contains a flaw in dyld that is triggered as code-signed applications do not properly detect manipulation. This may potentially allow an attacker to tamper with a signed application's code without invalidating its signature, effectively allowing them to bypass code signing checks. (CVE-2016-1738)

- Apple Mac OS X contains a flaw in the IOGen575Shared::new_texture() function in the Intel HD 3000 Graphics driver. The issue is triggered as user-supplied input is not properly validated when handling specially crafted messages. This may allow a local attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-1743)

- Apple Mac OS X contains a use-after-free condition in the Intel Graphics driver. The issue is triggered as user-supplied input is not properly validated. This may allow a local attacker to dereference already freed memory and potentially execute arbitrary code with elevated privileges. (CVE-2016-1744)

- Apple Mac OS X contains an unspecified NULL pointer dereference flaw in IOFireWireFamily. This may allow a local attacker to cause a denial of service. (CVE-2016-1745)

- Apple Mac OS X contains a flaw in the IOGraphicsFamily interface. The issue is triggered as user-supplied input is not properly validated when handling user-supplied function addresses. This may allow a local attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-1746)

- Apple Mac OS X contains a flaw in the IOGraphicsFamily interface. The issue is triggered as user-supplied input is not properly validated when handling user-supplied function addresses. This may allow a local attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-1747)

- Apple Mac OS X contains a flaw in the IOUSBInterfaceUserClient interface. The issues are triggered input is not properly sanitized when handling a user-supplied index. This may allow a local attacker to corrupt memory and cause a denial of service or potentially execute arbitrary code. (CVE-2016-1749)

- Apple Mac OS X contains a flaw in the kernel. 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-2016-1759)

- Apple Mac OS X contains a flaw that is triggered when JavaScript links in messages do not properly enforce content security policy checks. This may allow a context-dependent attacker to potentially gain unauthorized access to sensitive user information. (CVE-2016-1764)

- Apple Mac OS X contains an array indexing flaw in the NVIDIA Graphics driver that is triggered as user-supplied input is not properly validated. This may allow a local attacker to dereference invalid memory and potentially gain elevated privileges. (CVE-2016-1741)

- Apple Mac OS X contains a flaw in QuickTime. The issue is triggered as user-supplied input is not properly validated when handling FlashPix bitmap (.FPX) images. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1767)

- Apple Mac OS X contains a flaw in QuickTime. The issue is triggered as user-supplied input is not properly validated when handling FlashPix bitmap (.FPX) images. This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1768)

- Apple Mac OS X contains a flaw in QuickTime. The issue is triggered as user-supplied input is not properly validated when handling Photoshop documents (.PSD). This may allow a context-dependent attacker to corrupt memory and potentially execute arbitrary code. (CVE-2016-1769)

- Apple Mac OS X contains a flaw in reminders that is triggered by a failure to prompt users when clicking tel links before making the call. This may allow a context-dependent attacker to use a specially crafted tel link to cause a user to make arbitrary calls. (CVE-2016-1770)

- Apple Mac OS X contains a permission management flaw in the code signing tools in Security that may allow an unauthorized local attacker to enumerate the existence of arbitrary files. (CVE-2016-1773)

- Microsoft Internet Explorer contains a use-after-free error in the handling of CMediaEngine objects. With a specially crafted web page, a context-dependent attacker can dereference already freed memory and potentially execute arbitrary code. (CVE-2016-0166)

Versions of Apple TV earlier than 9.2 are unpatched for vulnerabilities in the following components :

 - FontParser (CVE-2016-1740)
 - HTTPProtocol (CVE-2015-8659)
 - IOHIDFamily (CVE-2016-1748)
 - Kernel (CVE-2016-1750)
 - Kernel (CVE-2016-1753)
 - Kernel (CVE-2016-1751)
 - Kernel (CVE-2016-1754, CVE-2016-1755)
 - Kernel (CVE-2016-1752)
 - libxml2 (CVE-2015-1819, CVE-2015-5312, CVE-2015-7499, CVE-2015-7500, CVE-2015-7942, CVE-2015-8035, CVE-2015-8242, CVE-2016-1762)
 - Security (CVE-2016-1950)
 - TrueTypeScaler (CVE-2016-1775)
 - WebKit (CVE-2016-1783)
 - WebKit History (CVE-2016-1784)
 - Wi-Fi (CVE-2016-0801, CVE-2016-0802)

The remote host is running a version of Mac OS X version 10.11.x prior to 10.11.4 and is affected by multiple vulnerabilities in the following components :

 - apache_mod_php
 - AppleRAID
 - AppleUSBNetworking
 - Bluetooth
 - Carbon
 - dyld
 - FontParser
 - HTTPProtocol
 - Intel Graphics Driver
 - IOFireWireFamily
 - IOGraphics
 - IOHIDFamily
 - IOUSBFamily
 - Kernel
 - libxml2
 - Messages
 - NVIDIA Graphics Drivers
 - OpenSSH
 - OpenSSL
 - Python
 - QuickTime
 - Reminders
 - Ruby
 - Security
 - Tcl
 - TrueTypeScaler
 - Wi-Fi

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

The remote host is running a version of iOS that is prior to version 9.3 and the following components contain vulnerabilities :

 - AppleUSBNetworking
 - FontParser
 - HTTPProtocol
 - IOHIDFamily
 - Kernel
 - LaunchServices
 - libxml2
 - Messages
 - Profiles
 - Security
 - TrueTypeScaler
 - WebKit
 - Wi-Fi

According to its banner, the remote Apple TV device is a version prior to 9.2. It is, therefore, affected by the following vulnerabilities :

  - An XML external entity (XXE) expansion flaw exists in     libxml2 due to the XML parser accepting entities from     untrusted sources. An unauthenticated, remote attacker     can exploit this, via crafted XML data, to cause a     denial of service through resource exhaustion.
    (CVE-2015-1819)

  - An XML external entity (XXE) injection flaw exists in     libxml2 in file parser.c due to the XML parser accepting     entities from untrusted sources. An unauthenticated,     remote attacker can exploit this, via crafted XML data,     to cause a denial of service or to disclose sensitive     information. (CVE-2015-5312)

  - A heap buffer overflow condition exists in libxml2 in     the xmlGROW() function within file parser.c while     handling XML data. An unauthenticated, remote attacker     can exploit this to disclose sensitive information.
    (CVE-2015-7499)

  - An out-of-bounds heap read error exists in libxml2 in     the xmlParseMisc() function within file parser.c while     handling entity boundaries. An unauthenticated, remote     attacker can exploit this to cause a denial of service.
    (CVE-2015-7500)

  - An out-of-bounds read error exists in libxml2 in the     xmlParseConditionalSections() function within file     parser.c due to a failure to properly skip intermediary     entities when it stops parsing invalid input. An     unauthenticated, remote attacker can exploit this, via     crafted XML data, to cause a denial of service.
    (CVE-2015-7942)

  - A flaw exists in libxml2 in the xz_decomp() function     within file xzlib.c due to a failure to properly detect     compression errors when handling compressed XML content.
    An unauthenticated, remote attacker can exploit this,     via crafted XML data, to cause an infinite loop,     resulting in a denial of service.
    (CVE-2015-8035)

  - A out-of-bounds read error exists in libxml2 in the     xmlSAX2TextNode() function within file SAX2.c due to     improper sanitization of input data. An unauthenticated,     remote attacker can exploit this, via crafted XML data,     to cause a denial of service or to disclose sensitive     information. (CVE-2015-8242)

  - A use-after-free error exists in Nghttp2 within file     lib/nghttp2_session.c when handling idle streams. An     unauthenticated, remote attacker can exploit this to     deference already freed memory, allowing the execution     of arbitrary code. (CVE-2015-8659)

  - An overflow condition exists in the Broadcom Wi-Fi     driver due to improper validation of data while handling     SSID or WPS_ID_DEVICE_NAME values. An unauthenticated,     adjacent attacker can exploit this, via a crafted     wireless control message packet, to cause a denial of     service or to execute arbitrary code. (CVE-2016-0801)

  - An overflow condition exists in the Broadcom Wi-Fi     driver due to improper validation of user-supplied     input when handling the packet length of event messages.
    An unauthenticated, adjacent attacker can exploit this,     via a crafted wireless control message packet, to cause     a denial of service or to execute arbitrary code.
    (CVE-2016-0802)

  - A flaw exists in FontParser due to improper validation     of user-supplied input when handling encoded fonts that     contain invalid characters. An unauthenticated, remote     attacker can exploit this, via a crafted PDF document,     to corrupt memory, resulting in a denial of service or     the execution arbitrary code. (CVE-2016-1740)

  - A flaw exists in IOHIDFamily due to improper validation     of user-supplied input. An unauthenticated, remote     attacker can exploit this, via a crafted application,     to gain access to kernel memory layout information.
    (CVE-2016-1748)

  - A use-after-free error exists in the kernel that allows     an unauthenticated, remote attacker to execute arbitrary     code via a crafted application. (CVE-2016-1750)

  - A flaw exists in the kernel due to a failure to properly     restrict execution permissions. An unauthenticated,     remote attacker can exploit this, via a crafted     application, to bypass code-signing protection     mechanisms. (CVE-2016-1751)

  - An unspecified flaw exists in the kernel that allows a     local attacker to cause a denial of service via a     crafted application. (CVE-2016-1752)

  - An integer overflow condition exists in the kernel due     to improper validation of user-supplied input. An     unauthenticated, remote attacker can exploit this, via     a crafted application, to gain elevated privileges.
    (CVE-2016-1753)

  - A memory corruption issue exists in the kernel due to     improper validation of user-supplied input. An     unauthenticated, remote attacker can exploit this, by     convincing a user to install a malicious application,     to cause a denial of service or execute arbitrary code.
    CVE-2016-1754)

  - A use-after-free error exists in the AppleKeyStore user     client when handling multiple threads, which is     triggered when one thread closes the user client while     another attempts to call an external method. An     unauthenticated, remote attacker can exploit this, by     convincing a user to install a malicious application, to     execute arbitrary code with elevated privileges.
    (CVE-2016-1755)

  - A flaw exists in libxml2 due to improper validation of     user-supplied input while handling XML content. An     unauthenticated, remote attacker can exploit this, via a     crafted XML document, to cause a denial of service or to     execute arbitrary code. (CVE-2016-1762)

  - An out-of-bounds write error exists in TrueTypeScaler     due to improper validation of user-supplied input while     handling bdat tables in TTF fonts. An unauthenticated,     remote attacker can exploit this, via a crafted TTF     font, to cause a denial or service or to execute     arbitrary code. (CVE-2016-1775)

  - A flaw exists in WebKit due to improper validation of     user-supplied input. An unauthenticated, remote attacker     can exploit this, via a crafted website, to cause a     denial of service or execute arbitrary code.
    (CVE-2016-1783)

  - An unspecified flaw exists in the History implementation     of WebKit that allows an unauthenticated, remote     attacker to cause a denial of service via a crafted     website. (CVE-2016-1784)

  - A heap buffer overflow condition exists in Mozilla     Network Security Services due to improper validation of     user-supplied input while parsing ASN.1 structures. An     unauthenticated, remote attacker can exploit this, via     crafted ASN.1 data in an X.509 certificate, to cause a     denial of service or execute arbitrary code.
    (CVE-2016-1950)

Note that only 4th generation models are affected by these vulnerabilities, and this plugin only checks these models.

The mobile device is running a version of iOS prior to version 9.3. It is, therefore, affected by multiple vulnerabilities in the following components :

  - AppleUSBNetworking
  - FontParser
  - HTTPProtocol
  - IOHIDFamily
  - Kernel
  - LaunchServices
  - libxml2
  - Messages
  - Profiles
  - Security
  - TrueTypeScaler
  - WebKit
  - Wi-Fi

The remote host is running a version of Mac OS X that is 10.11.x prior to 10.11.4. It is, therefore, affected by multiple vulnerabilities in the following components :

  - apache_mod_php
  - AppleRAID
  - AppleUSBNetworking
  - Bluetooth
  - Carbon
  - dyld
  - FontParser
  - HTTPProtocol
  - Intel Graphics Driver
  - IOFireWireFamily
  - IOGraphics
  - IOHIDFamily
  - IOUSBFamily
  - Kernel
  - libxml2
  - Messages
  - NVIDIA Graphics Drivers
  - OpenSSH
  - OpenSSL
  - Python
  - QuickTime
  - Reminders
  - Ruby
  - Security
  - Tcl
  - TrueTypeScaler
  - Wi-Fi

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

ID	Name	Product	Family	Severity
802018	Mac OS X < 10.11.4 Multiple Vulnerabilities	Log Correlation Engine	Operating System Detection	critical
9336	Apple TV < 9.2 Multiple Vulnerabilities	Nessus Network Monitor	Internet Services	critical
9327	Mac OS X 10.11.x < 10.11.4 Multiple Vulnerabilities	Nessus Network Monitor	Operating System Detection	critical
9331	Apple iOS < 9.3 Multiple Vulnerabilities	Nessus Network Monitor	Mobile Devices	high
90309	Apple TV < 9.2 Multiple Vulnerabilities	Nessus	Misc.	critical
90118	Apple iOS < 9.3 Multiple Vulnerabilities	Nessus	Mobile Devices	critical
90096	Mac OS X 10.11.x < 10.11.4 Multiple Vulnerabilities	Nessus	MacOS X Local Security Checks	critical

Detections

Analytics

CVE-2016-1750

high

Tenable Plugins

critical

critical

critical

high

critical

critical

critical