dyld in Apple iOS before 8.1.1 and Apple TV before 7.0.2 does not properly handle overlapping segments in Mach-O executable files, which allows local users to bypass intended code-signing restrictions via a crafted file.

According to its banner, the remote Apple TV device is missing a security update.  It is, therefore, affected by the following vulnerabilities :

 - Memory corruption flaw within WebKit which can allow a remote attacker to execute arbitrary code or crash the application. (CVE-2014-4462, CVE-2014-4452)
 - Memory corruption flaw within IOSharedDataQueue which can allow a remote attacker to execute arbitrary code in a privileged context via a crafted application. (CVE-2014-4461)
 - Memory corruption flaw within the Mach-O executable files which allows local users to bypass code-signing restrictions. (CVE-2014-4455)

According to its banner, the remote Apple iOS device is missing a security update.  It is, therefore, affected by the following vulnerabilities :

 - There is a memory corruption flaw within WebKit which can allow a remote attacker to execute arbitrary code or crash the application. (CVE-2014-4462, CVE-2014-4452)

 - There is a memory corruption flaw within IOSharedDataQueue which can allow a remote attacker to execute arbitrary code in a privileged context via a crafted application. (CVE-2014-4461)

 - There is a memory corruption flaw within the Mach-O executable files which allows local users to bypass code-signing restrictions. (CVE-2014-4455)

 - There is a flaw in the enforcement of the failed-passcode limit. (CVE-2014-4451)

 - The lock-screen protection control is vulnerable to a flaw which allows local users to bypass the failed-passcode limit. (CVE-2014-4463)

 - The Sandbox Profiles subsystem does not properly implement the debugserver sandbox, allowing a bypass of the existing controls. (CVE-2014-4457)

According to its banner, the remote Apple TV device is a version prior to 7.0.3. It is, therefore, affected by the following vulnerabilities :

  - Multiple memory corruption issues exist, related to the     included version of WebKit, that allow application     crashes or arbitrary code execution. (CVE-2014-3192,     CVE-2014-4459, CVE-2014-4466, CVE-2014-4468,     CVE-2014-4469, CVE-2014-4470, CVE-2014-4471,     CVE-2014-4472, CVE-2014-4473, CVE-2014-4474,     CVE-2014-4475, CVE-2014-4476, CVE-2014-4477,     CVE-2014-4479)

  - A state management issue exists due to improperly     handling overlapping segments in Mach-O executable     files. A local user can exploit this issue to execute     unsigned code. (CVE-2014-4455)

  - A security bypass issue exists due to improper     validation of SVG files loaded in an IMG element. An     attacker can load a CSS of cross-origin resulting in     information disclosure. (CVE-2014-4465)

  - An issue exists due to the symbolic linking performed     by the 'afc' command which allows an attacker to     access arbitrary files on the system. (CVE-2014-4480)

  - An integer overflow issue exists due to improper bounds     checking when processing PDF files. (CVE-2014-4481)

  - A buffer overflow issue exists due to improper bounds     checking when processing fonts in PDF files.
    (CVE-2014-4483)

  - A memory corruption issue exists due to improper bounds     checking when processing '.dfont' files.
    (CVE-2014-4484)

  - A buffer overflow issue exists due to improper bounds     checking when processing XML files. (CVE-2014-4485)

  - A null pointer dereference issue exists due to the     handling of resource lists in the IOAcceleratorFamily     kernel extension. (CVE-2014-4486)

  - A buffer overflow issue exists due to improper size     validation in the IOHIDFamily. (CVE-2014-4487)

  - A validation issue exists due to the handling of     resource queue metadata in the IOHIDFamily kernel     extension. (CVE-2014-4488)

  - A null pointer dereference issue exists due to the     handling of event queues in the IOHIDFamily kernel     extension. (CVE-2014-4489)

  - An information disclosure issue exists due to the     handling of APIs related to kernel extensions in which     kernel addresses may be revealed. An attacker can     leverage this to bypass ASLR protections.
    (CVE-2014-4491)

  - Multiple type confusion issues exists due to improper     type checking during interprocess communication in the     network daemon (networkd). (CVE-2014-4492)

  - An issue exists due to improper checking of shared     memory permissions in the kernel shared memory     subsystem. (CVE-2014-4495)

  - An information disclosure issue exists due to     mach_port_kobject kernel interface leaking kernel     addresses and heap permutation values. An attacker can     leverage this to bypass ASLR protections.
    (CVE-2014-4496)

Note that arbitrary code execution is possible with the above issues assigned CVE-2014-4481 through CVE-2014-4489, CVE-2014-4492, and CVE-2014-4495.

The mobile device is running a version of iOS prior to version 8.1.3.
It is, therefore, affected by vulnerabilities in the following components :

  - AppleFileConduit
  - CoreGraphics
  - dyld
  - FontParser
  - Foundation
  - IOAcceleratorFamily
  - IOHIDFamily
  - iTunes Store
  - Kernel
  - libnetcore
  - MobileInstallation
  - Springboard
  - WebKit

According to its banner, the remote Apple TV device is a version prior to 7.0.2. It is, therefore, affected by the following vulnerabilities :

  - Multiple memory corruption issues exist related to the     included version of WebKit that allow application     crashes or arbitrary code execution. (CVE-2014-4452,     CVE-2014-4462)

  - A state management issue exists due to improperly     handling overlapping segments in Mach-O executable     files. A local user can exploit this issue to execute     unsigned code. (CVE-2014-4455)

  - A remote code execution issue exists due to improper     validation of metadata fields in IOSharedDataQueue     objects. (CVE-2014-4461)

The mobile device is running a version of iOS prior to version 8.1.1.
It is, therefore, affected by vulnerabilities in the following components :

  - CFNetwork
  - dyld
  - Kernel
  - Lock Screen
  - Sandbox Profiles
  - Spotlight
  - WebKit

ID	Name	Product	Family	Type	Severity
8939	Apple TV < 7.0.2 Multiple Vulnerabilities	Nessus Network Monitor	Internet Services		high
8940	Apple iOS 8.x < 8.1.1 Multiple Vulnerabilities.	Nessus Network Monitor	Mobile Devices		high
81145	Apple TV < 7.0.3 Multiple Vulnerabilities	Nessus	Misc.	Remote	critical
81050	Apple iOS < 8.1.3 Multiple Vulnerabilities	Nessus	Mobile Devices	Local	critical
79360	Apple TV < 7.0.2 Multiple Vulnerabilities	Nessus	Misc.	Remote	high
79312	Apple iOS < 8.1.1 Multiple Vulnerabilities	Nessus	Mobile Devices	Local	high

Detections

Analytics

CVE-2014-4455

high

Tenable Plugins

high

high

critical

critical

high

high