The following security vulnerability patched with this release.
CoreText
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: Processing a maliciously crafted text file may lead to an unexpected application termination
Description: A denial of service issue was addressed through improved memory handling.
CVE-2017-13849: Ro of SavSec
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-2017-13799: an anonymous researcher
Messages
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A person with physical access to an iOS device may be able to access photos from the lock screen
Description: A lock screen issue allowed access to photos via Reply With Message on a locked device. This issue was addressed with improved state management.
CVE-2017-13844: Miguel Alvarado of iDeviceHelp INC
Siri
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A person with physical access to an iOS device may be able to use Siri to read notifications of content that is set not to be displayed at the lock screen
Description: An issue existed with Siri permissions. This was addressed with improved permission checking.
CVE-2017-13805: an anonymous researcher
StreamingZip
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A malicious zip file may be able modify restricted areas of the file system
Description: A path handling issue was addressed with improved validation.
CVE-2017-13804: @qwertyoruiopz at KJC Research Intl. S.R.L.
UIKit
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: Characters in a secure text field might be revealed
Description: The characters in a secure text field were revealed during focus change events. This issue was addressed through improved state management.
CVE-2017-7113: an anonymous researcher, Duraiamuthan Harikrishnan of Tech Mahindra, Ricardo Sampayo of Bemo Ltd
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-2017-13784: Ivan Fratric of Google Project Zero
CVE-2017-13783: Ivan Fratric of Google Project Zero
CVE-2017-13785: Ivan Fratric of Google Project Zero
CVE-2017-13788: xisigr of Tencent’s Xuanwu Lab (tencent.com)
CVE-2017-13802: Ivan Fratric of Google Project Zero
CVE-2017-13792: Ivan Fratric of Google Project Zero
CVE-2017-13795: Ivan Fratric of Google Project Zero
CVE-2017-13798: Ivan Fratric of Google Project Zero
CVE-2017-13796: Ivan Fratric of Google Project Zero
CVE-2017-13794: Ivan Fratric of Google Project Zero
CVE-2017-13793: Hanul Choi working with Trend Micro’s Zero Day Initiative
CVE-2017-13791: Ivan Fratric of Google Project Zero
CVE-2017-13803: chenqin (陈钦) of Ant-financial Light-Year Security
Wi-Fi
Available for: iPhone 7 and later, and iPad Pro 9.7-inch (early 2016) and later
Impact: An attacker in Wi-Fi range may force nonce reuse in WPA 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
Source: https://support.apple.com/en-us/HT208222