About the security content of iOS 10.3.1

This document describes the security content of iOS 10.3.1.

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 10.3.1

CoreText

Available for: iPhone 5 and later, iPad 4th generation and later, and iPod touch 6th generation

Impact: Processing a maliciously crafted file may lead to application termination

Description: A denial of service issue was addressed through improved validation.

CVE-2017-7003: Jake Davis of SPYSCAPE (@DoubleJake)

Wi-Fi

Available for: iPhone 5 and later, iPad 4th generation and later, iPod touch 6th generation and later

Impact: An attacker within range may be able to execute arbitrary code on the Wi-Fi chip

Description: A stack buffer overflow was addressed through improved input validation.

CVE-2017-6975: Gal Beniamini of Google Project Zero