[转]About the security content of iOS 8

Source：http://support.apple.com/kb/HT6441

For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.

For information about the Apple Product Security PGP Key, see How to use the Apple Product Security PGP Key.

Where possible, CVE IDs are used to reference the vulnerabilities for further information.

To learn about other Security Updates, see Apple Security Updates.

iOS 8

• 802.1X

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: An attacker can obtain WiFi credentials

  Description: An attacker could have impersonated a WiFi access point, offered to authenticate with LEAP, broken the MS-CHAPv1 hash, and used the derived credentials to authenticate to the intended access point even if that access point supported stronger authentication methods. This issue was addressed by disabling LEAP by default.

  CVE-ID

  CVE-2014-4364 : Pieter Robyns, Bram Bonne, Peter Quax, and Wim Lamotte of Universiteit Hasselt

• Accounts

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A malicious application may be able to identify the Apple ID of the user

  Description: An issue existed in the access control logic for accounts. A sandboxed application could get information about the currently-active iCloud account, including the name of the account. This issue was addressed by restricting access to certain account types from unauthorized applications.

  CVE-ID

  CVE-2014-4423 : Adam Weaver

• Accessibility

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: The device may not lock the screen when using AssistiveTouch

  Description: A logic issue existed in AssistiveTouch's handling of events, which resulted in the screen not locking. This issue was addressed through improved handling of the lock timer.

  CVE-ID

  CVE-2014-4368 : Hendrik Bettermann

• Accounts Framework

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: An attacker with access to an iOS device may access sensitive user information from logs

  Description: Sensitive user information was logged. This issue was addressed by logging less information.

  CVE-ID

  CVE-2014-4357 : Heli Myllykoski of OP-Pohjola Group

• Address Book

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A person with physical access to an iOS device may read the address book

  Description: The address book was encrypted with a key protected only by the hardware UID. This issue was addressed by encrypting the address book with a key protected by the hardware UID and the user's passcode.

  CVE-ID

  CVE-2014-4352 : Jonathan Zdziarski

• App Installation

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A local attacker may be able to escalate privileges and install unverified applications

  Description: A race condition existed in App Installation. An attacker with the capability of writing to /tmp may have been able to install an unverified app. This issue was addressed by staging files for installation in another directory.

  CVE-ID

  CVE-2014-4386 : evad3rs

• App Installation

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A local attacker may be able to escalate privileges and install unverified applications

  Description: A path traversal issue existed in App Installation. A local attacker could have retargeted code signature validation to a bundle different from the one being installed and cause installation of an unverified app. This issue was addressed by detecting and preventing path traversal when determining which code signature to verify.

  CVE-ID

  CVE-2014-4384 : evad3rs

• Assets

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: An attacker with a privileged network position may be able to cause an iOS device to think that it is up to date even when it is not

  Description: A validation issue existed in the handling of update check responses. Spoofed dates from Last-Modified response headers set to future dates were used for If-Modified-Since checks in subsequent update requests. This issue was addressed by validation of the Last-Modified header.

  CVE-ID

  CVE-2014-4383 : Raul Siles of DinoSec

• Bluetooth

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Bluetooth is unexpectedly enabled by default after upgrading iOS

  Description: Bluetooth was enabled automatically after upgrading iOS. This was addressed by only turning on Bluetooth for major or minor version updates.

  CVE-ID

  CVE-2014-4354 : Maneet Singh, Sean Bluestein

• Certificate Trust Policy

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Update to the certificate trust policy

  Description: The certificate trust policy was updated. The complete list of certificates may be viewed athttp://support.apple.com/kb/HT5012.

• CoreGraphics

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution

  Description: An integer overflow existed in the handling of PDF files. This issue was addressed through improved bounds checking.

  CVE-ID

  CVE-2014-4377 : Felipe Andres Manzano of Binamuse VRT working with the iSIGHT Partners GVP Program

• CoreGraphics

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Opening a maliciously crafted PDF file may lead to an unexpected application termination or an information disclosure

  Description: An out of bounds memory read existed in the handling of PDF files. This issue was addressed through improved bounds checking.

  CVE-ID

  CVE-2014-4378 : Felipe Andres Manzano of Binamuse VRT working with the iSIGHT Partners GVP Program

• Data Detectors

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Tapping on a FaceTime link in Mail would trigger a FaceTime audio call without prompting

  Description: Mail did not consult the user before launching facetime-audio:// URLs. This issue was addressed with the addition of a confirmation prompt.

  CVE-ID

  CVE-2013-6835 : Guillaume Ross

• Foundation

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: An application using NSXMLParser may be misused to disclose information

  Description: An XML External Entity issue existed in NSXMLParser's handling of XML. This issue was addressed by not loading external entities across origins.

  CVE-ID

  CVE-2014-4374 : George Gal of VSR (http://www.vsecurity.com/)

• Home & Lock Screen

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A background app can determine which app is frontmost

  Description: The private API for determining the frontmost app did not have sufficient access control. This issue was addressed through additional access control.

  CVE-ID

  CVE-2014-4361 : Andreas Kurtz of NESO Security Labs and Markus Troßbach of Heilbronn University

• iMessage

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Attachments may persist after the parent iMessage or MMS is deleted

  Description: A race condition existed in how attachments were deleted. This issue was addressed by conducting additional checks on whether an attachment has been deleted.

  CVE-ID

  CVE-2014-4353 : Silviu Schiau

• IOAcceleratorFamily

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: An application may cause an unexpected system termination

  Description: A null pointer dereference existed in the handling of IOAcceleratorFamily API arguments. This issue was addressed through improved validation of IOAcceleratorFamily API arguments.

  CVE-ID

  CVE-2014-4369 : Catherine aka winocm and Cererdlong of Alibaba Mobile Security Team

• IOAcceleratorFamily

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: The device may unexpectedly restart

  Description: A NULL pointer dereference was present in the IntelAccelerator driver. The issue was addressed by improved error handling.

  CVE-ID

  CVE-2014-4373 : cunzhang from Adlab of Venustech

• IOHIDFamily

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A malicious application may be able to read kernel pointers, which can be used to bypass kernel address space layout randomization

  Description: An out-of-bounds read issue existed in the handling of an IOHIDFamily function. This issue was addressed through improved bounds checking.

  CVE-ID

  CVE-2014-4379 : Ian Beer of Google Project Zero

• IOHIDFamily

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A malicious application may be able to execute arbitrary code with system privileges

  Description: A heap buffer overflow existed in IOHIDFamily's handling of key-mapping properties. This issue was addressed through improved bounds checking.

  CVE-ID

  CVE-2014-4404 : Ian Beer of Google Project Zero

• IOHIDFamily

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A malicious application may be able to execute arbitrary code with system privileges

  Description: A null pointer dereference existed in IOHIDFamily's handling of key-mapping properties. This issue was addressed through improved validation of IOHIDFamily key-mapping properties.

  CVE-ID

  CVE-2014-4405 : Ian Beer of Google Project Zero

• IOHIDFamily

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A malicious application may be able to execute arbitrary code with kernel privileges

  Description: An out-of-bounds write issue existed in the IOHIDFamily kernel extension. This issue was addressed through improved bounds checking.

  CVE-ID

  CVE-2014-4380 : cunzhang from Adlab of Venustech

• IOKit

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A malicious application may be able to read uninitialized data from kernel memory

  Description: An uninitialized memory access issue existed in the handling of IOKit functions. This issue was addressed through improved memory initialization

  CVE-ID

  CVE-2014-4407 : @PanguTeam

• IOKit

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A malicious application may be able to execute arbitrary code with system privileges

  Description: A validation issue existed in the handling of certain metadata fields of IODataQueue objects. This issue was addressed through improved validation of metadata.

  CVE-ID

  CVE-2014-4418 : Ian Beer of Google Project Zero

• IOKit

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A malicious application may be able to execute arbitrary code with system privileges

  Description: A validation issue existed in the handling of certain metadata fields of IODataQueue objects. This issue was addressed through improved validation of metadata.

  CVE-ID

  CVE-2014-4388 : @PanguTeam

• IOKit

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A malicious application may be able to execute arbitrary code with system privileges

  Description: An integer overflow existed in the handling of IOKit functions. This issue was addressed through improved validation of IOKit API arguments.

  CVE-ID

  CVE-2014-4389 : Ian Beer of Google Project Zero

• Kernel

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A local user may be able to determine kernel memory layout

  Description: Multiple uninitialized memory issues existed in the network statistics interface, which led to the disclosure of kernel memory content. This issue was addressed through additional memory initialization.

  CVE-ID

  CVE-2014-4371 : Fermin J. Serna of the Google Security Team

  CVE-2014-4419 : Fermin J. Serna of the Google Security Team

  CVE-2014-4420 : Fermin J. Serna of the Google Security Team

  CVE-2014-4421 : Fermin J. Serna of the Google Security Team

• Kernel

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A person with a privileged network position may cause a denial of service

  Description: A race condition issue existed in the handling of IPv6 packets. This issue was addressed through improved lock state checking.

  CVE-ID

  CVE-2011-2391 : Marc Heuse

• Kernel

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A local user may be able to cause an unexpected system termination or arbitrary code execution in the kernel

  Description: A double free issue existed in the handling of Mach ports. This issue was addressed through improved validation of Mach ports.

  CVE-ID

  CVE-2014-4375 : an anonymous researcher

• Kernel

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A local user may be able to cause an unexpected system termination or arbitrary code execution in the kernel

  Description: An out-of-bounds read issue existed in rt_setgate. This may lead to memory disclosure or memory corruption. This issue was addressed through improved bounds checking.

  CVE-ID

  CVE-2014-4408

• Kernel

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Some kernel hardening measures may be bypassed

  Description: The random number generator used for kernel hardening measures early in the boot process was not cryptographically secure. Some of its output was inferable from user space, allowing bypass of the hardening measures. This issue was addressed by using a cryptographically secure algorithm.

  CVE-ID

  CVE-2014-4422 : Tarjei Mandt of Azimuth Security

• Libnotify

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A malicious application may be able to execute arbitrary code with root privileges

  Description: An out-of-bounds write issue existed in Libnotify. This issue was addressed through improved bounds checking.

  CVE-ID

  CVE-2014-4381 : Ian Beer of Google Project Zero

• Lockdown

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A device can be manipulated into incorrectly presenting the home screen when the device is activation locked

  Description: An issue existed with unlocking behavior that caused a device to proceed to the home screen even if it should still be in an activation locked state. This was addressed by changing the information a device verifies during an unlock request.

  CVE-ID

  CVE-2014-1360

• Mail

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Login credentials can be sent in plaintext even if the server has advertised the LOGINDISABLED IMAP capability

  Description: Mail sent the LOGIN command to servers even if they had advertised the LOGINDISABLED IMAP capability. This issue is mostly a concern when connecting to servers that are configured to accept non-encrypted connections and that advertise LOGINDISABLED. This issue was addressed by respecting the LOGINDISABLED IMAP capability.

  CVE-ID

  CVE-2014-4366 : Mark Crispin

• Mail

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A person with physical access to an iOS device may potentially read email attachments

  Description: A logic issue existed in Mail's use of Data Protection on email attachments. This issue was addressed by properly setting the Data Protection class for email attachments.

  CVE-ID

  CVE-2014-1348 : Andreas Kurtz of NESO Security Labs

• Profiles

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Voice Dial is unexpectedly enabled after upgrading iOS

  Description: Voice Dial was enabled automatically after upgrading iOS. This issue was addressed through improved state management.

  CVE-ID

  CVE-2014-4367 : Sven Heinemann

• Safari

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: User credentials may be disclosed to an unintended site via autofill

  Description: Safari may have autofilled user names and passwords into a subframe from a different domain than the main frame. This issue was addressed through improved origin tracking.

  CVE-ID

  CVE-2013-5227 : Niklas Malmgren of Klarna AB

• Safari

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: An attacker with a privileged network position may intercept user credentials

  Description: Saved passwords were autofilled on http sites, on https sites with broken trust, and in iframes. This issue was addressed by restricting password autofill to the main frame of https sites with valid certificate chains.

  CVE-ID

  CVE-2014-4363 : David Silver, Suman Jana, and Dan Boneh of Stanford University working with Eric Chen and Collin Jackson of Carnegie Mellon University

• Sandbox Profiles

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Apple ID information is accessible by third-party apps

  Description: An information disclosure issue existed in the third-party app sandbox. This issue was addressed by improving the third-party sandbox profile.

  CVE-ID

  CVE-2014-4362 : Andreas Kurtz of NESO Security Labs and Markus Troßbach of Heilbronn University

• Settings

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Text message previews may appear at the lock screen even when this feature is disabled

  Description: An issue existed in the previewing of text message notifications at the lock screen. As a result, the contents of received messages would be shown at the lock screen even when previews were disabled in Settings. The issue was addressed through improved observance of this setting.

  CVE-ID

  CVE-2014-4356 : Mattia Schirinzi from San Pietro Vernotico (BR), Italy

• syslog

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A local user may be able to change permissions on arbitrary files

  Description: syslogd followed symbolic links while changing permissions on files. This issue was addressed through improved handling of symbolic links.

  CVE-ID

  CVE-2014-4372 : Tielei Wang and YeongJin Jang of Georgia Tech Information Security Center (GTISC)

• Weather

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Location information was sent unencrypted

  Description: An information disclosure issue existed in an API used to determine local weather. This issue was addressed by changing APIs.

• WebKit

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A malicious website may be able to track users even when private browsing is enabled

  Description: A web application could store HTML 5 application cache data during normal browsing and then read the data during private browsing. This was addressed by disabling access to the application cache when in private browsing mode.

  CVE-ID

  CVE-2014-4409 : Yosuke Hasegawa (NetAgent Co., Led.)

• WebKit

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution

  Description: Multiple memory corruption issues existed in WebKit. These issues were addressed through improved memory handling.

  CVE-ID

  CVE-2013-6663 : Atte Kettunen of OUSPG

  CVE-2014-1384 : Apple

  CVE-2014-1385 : Apple

  CVE-2014-1387 : Google Chrome Security Team

  CVE-2014-1388 : Apple

  CVE-2014-1389 : Apple

  CVE-2014-4410 : Eric Seidel of Google

  CVE-2014-4411 : Google Chrome Security Team

  CVE-2014-4412 : Apple

  CVE-2014-4413 : Apple

  CVE-2014-4414 : Apple

  CVE-2014-4415 : Apple

• WiFi

  Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

  Impact: A device may be passively tracked by its WiFi MAC address

  Description: An information disclosure existed because a stable MAC address was being used to scan for WiFi networks. This issue was addressed by randomizing the MAC address for passive WiFi scans.

Note:

iOS 8 contains changes to some diagnostic capabilities. For details, please consulthttp://support.apple.com/kb/HT6331

iOS 8 now permits devices to untrust all previously trusted computers. Instructions can be found athttp://support.apple.com/kb/HT5868

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