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| About the security content of iOS 11.2 | |
| This document describes the security content of iOS 11.2. | |
| About Apple security updates | |
| For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page. | |
| For more information about security, see the Apple Product Security page. You can encrypt communications with Apple using the Apple Product Security PGP Key. | |
| Apple security documents reference vulnerabilities by CVE-ID when possible. | |
| iOS 11.2 | |
| Released December 2, 2017 | |
| IOKit | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: An application may be able to execute arbitrary code with system privileges | |
| Description: Multiple memory corruption issues were addressed through improved state management. | |
| CVE-2017-13847: Ian Beer of Google Project Zero | |
| IOKit | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: An application may be able to execute arbitrary code with system privileges | |
| Description: A memory corruption issue was addressed with improved memory handling. | |
| CVE-2017-7162: an anonymous researcher | |
| Entry added December 21, 2017 | |
| IOMobileFrameBuffer | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: An application may be able to execute arbitrary code with kernel privilege | |
| Description: A memory corruption issue was addressed with improved memory handling. | |
| CVE-2017-13879: Apple | |
| IOSurface | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: An application may be able to execute arbitrary code with kernel privileges | |
| Description: A memory corruption issue was addressed with improved memory handling. | |
| CVE-2017-13861: Ian Beer of Google Project Zero | |
| Kernel | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: An application may be able to read kernel memory | |
| Description: Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache. | |
| CVE-2017-5754: Jann Horn of Google Project Zero, Werner Haas and Thomas Prescher of Cyberus Technology GmbH, and Daniel Gruss, Moritz Lipp, Stefan Mangard and Michael Schwarz from Graz University of Technology | |
| Entry added January 4, 2018 | |
| Kernel | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: An application may be able to execute arbitrary code with kernel privileges | |
| Description: A memory corruption issue was addressed with improved memory handling. | |
| CVE-2017-13862: Apple | |
| CVE-2017-13867: Ian Beer of Google Project Zero | |
| CVE-2017-13876: Ian Beer of Google Project Zero | |
| Entry updated December 21, 2017 | |
| Kernel | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: An application may be able to read restricted memory | |
| Description: An out-of-bounds read was addressed with improved bounds checking. | |
| CVE-2017-13833: Brandon Azad | |
| Kernel | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: An application may be able to read restricted memory | |
| Description: A type confusion issue was addressed with improved memory handling. | |
| CVE-2017-13855: Jann Horn of Google Project Zero | |
| Kernel | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: An application may be able to read restricted memory | |
| Description: Multiple validation issues were addressed with improved input sanitization. | |
| CVE-2017-13865: Ian Beer of Google Project Zero | |
| CVE-2017-13868: Brandon Azad | |
| CVE-2017-13869: Jann Horn of Google Project Zero | |
| Kernel | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: A local user may be able to cause unexpected system termination or read kernel memory | |
| Description: An input validation issue existed in the kernel. This issue was addressed through improved input validation. | |
| CVE-2017-7154: Jann Horn of Google Project Zero | |
| Entry added December 21, 2017 | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: Incorrect certificate is used for encryption | |
| Description: A S/MIME issue existed in the handling of encrypted email. This issue was addressed through improved selection of the encryption certificate. | |
| CVE-2017-13874: an anonymous researcher | |
| Mail Drafts | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: An attacker with a privileged network position may be able to intercept mail | |
| Description: An encryption issue existed with S/MIME credentials. The issue was addressed with additional checks and user control. | |
| CVE-2017-13860: Michael Weishaar of INNEO Solutions GmbH | |
| Mail Message Framework | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: Visiting a malicious website may lead to address bar spoofing | |
| Description: An inconsistent user interface issue was addressed with improved state management. | |
| CVE-2017-7152: Oliver Paukstadt of Thinking Objects GmbH (to.com) | |
| Entry added December 21, 2017 | |
| WebKit | |
| Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation | |
| Impact: Processing maliciously crafted web content may lead to arbitrary code execution | |
| Description: Multiple memory corruption issues were addressed with improved memory handling. | |
| CVE-2017-7156: an anonymous researcher | |
| CVE-2017-7157: an anonymous researcher | |
| CVE-2017-13856: Jeonghoon Shin | |
| CVE-2017-13870: an anonymous researcher | |
| CVE-2017-7160: an anonymous researcher | |
| CVE-2017-13866: an anonymous researcher | |
| Entry added December 13, 2017 | |
| Entry updated December 21, 2017 | |
| Wi-Fi | |
| Available for: iPhone 6s, iPhone 6s Plus, iPhone 6, iPhone 6 Plus, iPhone SE, iPhone 5s, 12.9-inch iPad Pro 1st generation, iPad Air 2, iPad Air, iPad 5th generation, iPad mini 4, iPad mini 3, iPad mini 2, and iPod touch 6th generation | |
| Released for iPhone 7 and later and iPad Pro 9.7-inch (early 2016) and later in iOS 11.1. | |
| Impact: An attacker in Wi-Fi range may force nonce reuse in WPA multicast/GTK clients (Key Reinstallation Attacks - KRACK) | |
| Description: A logic issue existed in the handling of state transitions. This was addressed with improved state management. | |
| CVE-2017-13080: Mathy Vanhoef of the imec-DistriNet group at KU Leuven | |
| Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. Risks are inherent in the use of the Internet. Contact the vendor for additional information. Other company and product names may be trademarks of their respective owners. | |
| Published Date: Jan 5, 2018 |
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